Pin and Sleeve: Everything You Ever Wanted To Know

pin and sleeve ultimate guide manufacturers

You may have guessed it but we are rather fanatical about pin and sleeve wiring devices here at Amp Authority. Since we started, we’ve been surprised by how widely available pin and sleeve is but how little information actually exists about it. Thus, we took it upon ourselves to create the most comprehensive guide to pin and sleeve ever created. This is not for those with a short attention span; this article will be over 11,000 words. However, those who read it will come out with a newfound knowledge and respect for plugs and connectors!

What Is Pin and Sleeve and Why Does It Exist?

Let’s start with the most basic question: what exactly are pin and sleeve wiring devices? Simply, pin and sleeve is a way to safely make electrical connections in commercial and industrial environments.

It makes sense that your standard plug or socket used at home shouldn’t be the same as a plug or socket in a chicken plant or an industrial bakery. Additional safety and product features are required to maintain a safe workplace environment.

Pin and sleeve wiring devices are the main way in Europe and the US that we plug and unplug things with either a lot of voltage, a lot of amperage, or both.

Who Regulates Pin and Sleeve?

Pin and Sleeve is an electrical standard. However, it’s not really “regulated” by an officially governing body. The IEC is the de facto organization responsible for the pin and sleeve wiring device products that exist throughout the world. Here’s how we described the IEC in one of our earlier blogs:

The IEC, which stands for the International Electrotechnical Commission, is the European framework for “electrotechnology”. The Commission itself is a non-profit, non-governmental agency that formed at the turn of the 20th century as the proliferation of electrical energy started to occur. Smartly, leaders in Europe realized that there should be a common set of rules for managing this and thus the IEC was born. In one sentence, the IEC sets standards for the installation and management of electrical systems in Europe and beyond.

Today, there are 82 member countries and 82 affiliates. The United States is a full member of the IEC. The IEC standards published by the Commission have numbers ranging from 60000–79999 (don’t ask us why it starts with 6000). What’s important to note is that the IEC publishes standards, not mandates.

Specifically, IEC 60309 covers pin and sleeve wiring devices. What exactly does that mean? We’ve covered that in another blog that detailed the standard:

First things first: if you just asked “Wait, what is the IEC?” then you need to read this. For those who know, you are already aware that all IEC standards range from 60000–79999. Specifically, IEC 60309 deals with “plugs, socket-outlets and couplers for industrial purposes”. One thing that sometimes people don’t understand is that the IEC 60309 standard does not have to be used in an industrial setting. We’ve seen IEC 60309 pin and sleeve devices in commercial settings and even residential (albeit rarely).

We subscribe to the “KISS” (keep it simple, stupid) principle here. Therefore, we feel no shame in saying that the IEC 60309 standard is nothing more than making sure that the right plugs go into the right holes. More specifically, IEC 60309 is meant to deal with light to heavy duty industrial grade applications at high voltages and currents (amperages). The maximum allowable voltage is 690V and the highest current is 125A.

Wait, Are There Actually Two IEC 60309 Standards?

Yes. Technically, there are 5 sub-standards.

 

However, -1 and -2 are the most broadly adopted. IEC 60309-1 deals with general functional safety requirements (environmental ratings, material specifications, etc). IEC 60309-2 specifies standardization aka that all units with the same voltage and amperage must be properly mated only with the appropriate pairing unit. In the industry, you may hear this referred to as products being “intermatable and interchangable” and this is important to grasp not only from a safety standpoint but also from the manufacturer side. This means that you can buy a Hubbell pin and sleeve plug and mate it with a generic pin and sleeve connector.

How Do Pin and Sleeve Mate?

Here’s where it starts to get a little tricky. We mentioned it earlier, but the idea with IEC 60309 is that plugs mate safely without arching or malfunctioning. The outcome of the standard is what is known as the “Pin & Sleeve” concept. This basically means that there are a certain number of pins on the male plugs and a corresponding connector on the female that matches only that unique pin configuration. Under this concept, you are never able to mate the wrong male and female pieces. Additionally, when mated, the pair should be resistant to water. In Europe, the standard is that a mated pair is IP 44 rated which means it is splashproof. Roughly 90% of pin and sleeve devices fit this description in the EU.

The mating system can definitely be confusing, even for those in the electrical industry. We are going to provide the simplest explanation possible as to how to ensure you have a pair that will mate:

How are Pin and Sleeve Products Named?

We found a good description of how these pin and sleeve devices are named in the market from Mennekes:

pin and sleeve naming convention

As you can see, it’s fairly straightforward to determine what kind of Wiring Device you would need. The only tricky thing is the “7” above. We will break this down in the next few sections.

Color Coding

You cannot mate a pair that isn’t the same color. Red goes with red, blue goes with blue, and so on. The is due to voltage compatibility. As we’ve learned, IEC 60309-2 makes sure that the pin and sleeve configurations are such that different colored plugs and connectors should never be able to mate.  However, you need to make sure that they have the same number of poles and wires. We will explain this below

If you’ve ever tried to buy an IEC 60309 pin and sleeve wiring device, you’ve undoubtedly seen this clock before…

IEC 60309 Clock

What does this mean? How should it be interpreted? Is this for the male or the female? All of these questions will be answered in the next few paragraphs.

Step 1: Wires

As you can see, there are three circles within the clock. These represent the number of wires that your device requires. You’ll always need at least 3 wires (hot, neutral, and ground) when dealing with IEC 60309 products. In the typical North American market, you will not exceed 5 wires (3 hot, one neutral, and one ground). It’s worth noting that 3 wire devices cannot carry 3 phase power because you need at least 3 pins to carry current. So, by now we should know what level of the circle we need to look at the IEC 60309 clock.

Step 2: Voltage

Next, you need to select the appropriate voltage for your application. In most industrial electrical cases with IEC 60309, you are dealing with AC power and three-phase power. Thus, you are likely looking for the outer two rims. Now, simply find the appropriate voltage you require. This should get you the correct clocking position of the female. We will explain why this matters later. Before we do that, we need to clarify two things about what the clock position actually means:

  1. The clock position relates to the location of the grounding pin (i.e. the biggest pin)
  2. The clock position only matters when the keyway is facing down. The keyway is the protruding section of the circular housing. You can see it’s facing down in this picture which is again from Mennekes (not a sponsor or affiliate of this site)

 

IEC 60309 keyway

Why You Need Both Steps

It may seem obvious, but ignoring one of these steps could result in ordering the wrong product. For example, 250V AC can be in either the 6 o’ clock position or the 9 o’ clock position depending on the number of wires. You need to consider both to be able to effectively read the IEC 60309 clock.

Wait, What About the Female?

We mentioned that the clock represents the female grounding position. Why does this matter? Because if you look at the grounding position of the male, it will not always be the same! Think about it this way: if you put an “L” on your forehead, it will look one way to you but will appear to be the exact opposite to the person looking at you. It’s the same with the clocking for IEC 60309. If you have a male device with no label on it, find the ground pin and then translate it to the clocking position where the female would accept it.

Most Common Configurations

In an industrial setting in the US, the most common settings are 4 wire, 480V (7 o’clock) and 4 wire, 250V (9 o’clock). In Canada, the standard is usually 600V which is in the 5 o’ clock position for both 4 and 5 wire. There are also certain industries where a specific configuration is used such as dual rated devices for data center or refrigeration. If you’re unsure of any of this, consult an expert who should lead you in the right direction. Wait, thankfully we are experts and have already done this for you! We recently published over 150+ common pin and sleeve combinations. Here’s a quick description of the columns below:

Product Name – The pin and sleeve connector, plug, receptacle, or inlet. For most manufacturers, simply add a prefix. For Hubbell, you would add the “HBL” prefix making the full product name HBL 320R4W:

320R4W pin and sleeve

Product Type – Is it a plug, connector, receptacle, or inlet?

Mating Unit 1/2 – For plugs and connectors, there are two possible mated pairs. For receptacles and inlets, there is only one possible mated pair

Voltage – Assume single phase power unless otherwise notes

Amperage – We only considered pin and sleeve wiring devices that are between 20-100A for this post

Female Grounding Contact Position -If you are looking at the hour hand of a clock, the time will show the position of the female ground position

# of Poles – How many live pins are on the device?

# of Wires – How many total wire/pins are there (includes ground)

Industry Standard Color – As part of the IEC 60309-2 standard, all manufacturers must have the same colors based on number of wires and voltage

 

Without further ado, here are 176 combinations of pin and sleeve devices!

Product  Name Product Type Mating Unit 1 Mating Unit 2 Voltage Amperage Female Grounding Contact Position # of Poles # of Wires Industry Standard Color
 320R4W  Pin and Sleeve Receptacle  320P4W 125 20A 4 2 3 Yellow
 320R6W  Pin and Sleeve Receptacle  320P6W 250 20A 6 2 3 Blue
 320R7W  Pin and Sleeve Receptacle  320P7W 480 20A 7 2 3 Red
 420R12W  Pin and Sleeve Receptacle  420P12W 125/250 20A 2 3 4 Orange
 420R9W  Pin and Sleeve Receptacle  420P9W 3 Phase 250 20A 9 3 4 Blue
 420R7W  Pin and Sleeve Receptacle  420P7W 3 Phase 480 20A 7 3 4 Red
 420R5W  Pin and Sleeve Receptacle  420P5W 3 Phase 600 20A 5 3 4 Black
 520R9W  Pin and Sleeve Receptacle  520P9W 3 Phase Y120/208 20A 9 4 5 Blue
 520R7W  Pin and Sleeve Receptacle  520P7W 3 Phase Y277/480 20A 7 4 5 Red
 520R5W  Pin and Sleeve Receptacle  520P5W 3 Phase Y347/600 20A 5 4 5 Black
 330R4W  Pin and Sleeve Receptacle  330P4W 125 30A 4 2 3 Yellow
 330R6W  Pin and Sleeve Receptacle  330P6W 250 30A 6 2 3 Blue
 330R7W  Pin and Sleeve Receptacle  330P7W 480 30A 7 2 3 Red
 430R12W  Pin and Sleeve Receptacle  430P12W 125/250 30A 12 3 4 Orange
 430R9W  Pin and Sleeve Receptacle  430P9W 3 Phase 250 30A 9 3 4 Blue
 430R7W  Pin and Sleeve Receptacle  430P7W 3 Phase 480 30A 7 3 4 Red
 430R5W  Pin and Sleeve Receptacle  430P5W 3 Phase 600 30A 5 3 4 Black
 530R9W  Pin and Sleeve Receptacle  530P9W 3 Phase Y120/208 30A 9 4 5 Blue
 530R7W  Pin and Sleeve Receptacle  530P7W 3 Phase Y277/480 30A 7 4 5 Red
 530R5W  Pin and Sleeve Receptacle  530P5W 3 Phase Y347/600 30A 5 4 5 Black
 360R4W  Pin and Sleeve Receptacle  360P4W 125 60A 4 2 3 Yellow
 360R6W  Pin and Sleeve Receptacle  360P6W 250 60A 6 2 3 Blue
 360R7W  Pin and Sleeve Receptacle  360P7W 480 60A 7 2 3 Red
 460R12W  Pin and Sleeve Receptacle  460P12W 125/250 60A 12 3 4 Orange
 460R9W  Pin and Sleeve Receptacle  460P9W 3 Phase 250 60A 9 3 4 Blue
 460R7W  Pin and Sleeve Receptacle  460P7W 3 Phase 480 60A 7 3 4 Red
 460R5W  Pin and Sleeve Receptacle  460P5W 3 Phase 600 60A 5 3 4 Black
 560R9W  Pin and Sleeve Receptacle  560P9W 3 Phase Y120/208 60A 9 4 5 Blue
 560R7W  Pin and Sleeve Receptacle  560P7W 3 Phase Y277/480 60A 7 4 5 Red
 560R5W  Pin and Sleeve Receptacle  560P5W 3 Phase Y347/600 60A 5 4 5 Black
 320P4W  Pin and Sleeve Plug  320R4W  320C4W 125 20A 4 2 3 Yellow
 320P6W  Pin and Sleeve Plug  320R6W  320C6W 250 20A 6 2 3 Blue
 320P7W  Pin and Sleeve Plug  320R7W  320C7W 480 20A 7 2 3 Red
 420P12W  Pin and Sleeve Plug  420R12W  420C12W 125/250 20A 12 3 4 Orange
 420P9W  Pin and Sleeve Plug  420R9W  420C9W 3 Phase 250 20A 9 3 4 Blue
 420P7W  Pin and Sleeve Plug  420R7W  420C7W 3 Phase 480 20A 7 3 4 Red
 420P5W  Pin and Sleeve Plug  420R5W  420C5W 3 Phase 600 20A 5 3 4 Black
 520P9W  Pin and Sleeve Plug  520R9W  520C9W 3 Phase Y120/208 20A 9 4 5 Blue
 520P7W  Pin and Sleeve Plug  520R7W  520C7W 3 Phase Y277/480 20A 7 4 5 Red
 520P5W  Pin and Sleeve Plug  520R5W  520C5W 3 Phase Y347/600 20A 5 4 5 Black
 330P4W  Pin and Sleeve Plug  330R4W  330C4W 125 30A 4 2 3 Yellow
 330P6W  Pin and Sleeve Plug  330R6W  330C6W 250 30A 6 2 3 Blue
 330P7W  Pin and Sleeve Plug  330R7W  330C7W 480 30A 7 2 3 Red
 430P12W  Pin and Sleeve Plug  430R12W  430C12W 125/250 30A 12 3 4 Orange
 430P9W  Pin and Sleeve Plug  430R9W  430C9W 3 Phase 250 30A 9 3 4 Blue
 430P7W  Pin and Sleeve Plug  430R7W  430C7W 3 Phase 480 30A 7 3 4 Red
 430P5W  Pin and Sleeve Plug  430R5W  430C5W 3 Phase 600 30A 5 3 4 Black
 530P9W  Pin and Sleeve Plug  530R9W  530C9W 3 Phase Y120/208 30A 9 4 5 Blue
 530P7W  Pin and Sleeve Plug  530R7W  530C7W 3 Phase Y277/480 30A 7 4 5 Red
 530P5W  Pin and Sleeve Plug  530R5W  530C5W 3 Phase Y347/600 30A 5 4 5 Black
 360P4W  Pin and Sleeve Plug  360R4W  360C4W 125 60A 4 2 3 Yellow
 360P6W  Pin and Sleeve Plug  360R6W  360C6W 250 60A 6 2 3 Blue
 360P7W  Pin and Sleeve Plug  360R7W  360C7W 480 60A 7 2 3 Red
 460P12W  Pin and Sleeve Plug  460R12W  460C12W 125/250 60A 12 3 4 Orange
 460P9W  Pin and Sleeve Plug  460R9W  460C9W 3 Phase 250 60A 9 3 4 Blue
 460P7W  Pin and Sleeve Plug  460R7W  460C7W 3 Phase 480 60A 7 3 4 Red
 460P5W  Pin and Sleeve Plug  460R5W  460C5W 3 Phase 600 60A 5 3 4 Black
 560P9W  Pin and Sleeve Plug  560R9W  560C9W 3 Phase Y120/208 60A 9 4 5 Blue
 560P7W  Pin and Sleeve Plug  560R7W  560C7W 3 Phase Y277/480 60A 7 4 5 Red
 560P5W  Pin and Sleeve Plug  560R5W  560C5W 3 Phase Y347/600 60A 5 4 5 Black
 320C4W  Pin and Sleeve Connector  320P4W  320B4W 125 20A 4 2 3 Yellow
 320C6W  Pin and Sleeve Connector  320P6W  320B6W 250 20A 6 2 3 Blue
 320C7W  Pin and Sleeve Connector  320P7W  320B7W 480 20A 7 2 3 Red
 420C12W  Pin and Sleeve Connector  420P12W  420B12W 125/250 20A 12 3 4 Orange
 420C9W  Pin and Sleeve Connector  420P9W  420B9W 3 Phase 250 20A 9 3 4 Blue
 420C7W  Pin and Sleeve Connector  420P7W  420B7W 3 Phase 480 20A 7 3 4 Red
 420C5W  Pin and Sleeve Connector  420P5W  420B5W 3 Phase 600 20A 5 3 4 Black
 520C9W  Pin and Sleeve Connector  520P9W  520B9W 3 Phase Y120/208 20A 9 4 5 Blue
 520C7W  Pin and Sleeve Connector  520P7W  520B7W 3 Phase Y277/480 20A 7 4 5 Red
 520C5W  Pin and Sleeve Connector  520P5W  520B5W 3 Phase Y347/600 20A 5 4 5 Black
 330C4W  Pin and Sleeve Connector  330P4W  330B4W 125 30A 4 2 3 Yellow
 330C6W  Pin and Sleeve Connector  330P6W  330B6W 250 30A 6 2 3 Blue
 330C7W  Pin and Sleeve Connector  330P7W  330B7W 480 30A 7 2 3 Red
 430C12W  Pin and Sleeve Connector  430P12W  430B12W 125/250 30A 2 3 4 Orange
 430C9W  Pin and Sleeve Connector  430P9W  430B9W 3 Phase 250 30A 9 3 4 Blue
 430C7W  Pin and Sleeve Connector  430P7W  430B7W 3 Phase 480 30A 7 3 4 Red
 430C5W  Pin and Sleeve Connector  430P5W  430B5W 3 Phase 600 30A 5 3 4 Black
 530C9W  Pin and Sleeve Connector  530P9W  530B9W 3 Phase Y120/208 30A 9 4 5 Blue
 530C7W  Pin and Sleeve Connector  530P7W  530B7W 3 Phase Y277/480 30A 7 4 5 Red
 530C5W  Pin and Sleeve Connector  530P5W  530B5W 3 Phase Y347/600 30A 5 4 5 Black
 360C4W  Pin and Sleeve Connector  360P4W  360B4W 125 60A 4 2 3 Yellow
 360C6W  Pin and Sleeve Connector  360P6W  360B6W 250 60A 6 2 3 Blue
 360C7W  Pin and Sleeve Connector  360P7W  360B7W 480 60A 7 2 3 Red
 460C12W  Pin and Sleeve Connector  460P12W  460B12W 125/250 60A 12 3 4 Orange
 460C9W  Pin and Sleeve Connector  460P9W  460B9W 3 Phase 250 60A 9 3 4 Blue
 460C7W  Pin and Sleeve Connector  460P7W  460B7W 3 Phase 480 60A 7 3 4 Red
 460C5W  Pin and Sleeve Connector  460P5W  460B5W 3 Phase 600 60A 5 3 4 Black
 560C9W  Pin and Sleeve Connector  560P9W  560B9W 3 Phase Y120/208 60A 9 4 5 Blue
 560C7W  Pin and Sleeve Connector  560P7W  560B7W 3 Phase Y277/480 60A 7 4 5 Red
 560C5W  Pin and Sleeve Connector  560P5W  560B5W 3 Phase Y347/600 60A 5 4 5 Black
 320B4W  Pin and Sleeve inlet  320C4W 125 20A 4 2 3 Yellow
 320B6W  Pin and Sleeve inlet  320C6W 250 20A 6 2 3 Blue
 320B7W  Pin and Sleeve inlet  320C7W 480 20A 7 2 3 Red
 420B12W  Pin and Sleeve inlet  420C12W 125/250 20A 12 3 4 Orange
 420B9W  Pin and Sleeve inlet  420C9W 3 Phase 250 20A 9 3 4 Blue
 420B7W  Pin and Sleeve inlet  420C7W 3 Phase 480 20A 7 3 4 Red
 420B5W  Pin and Sleeve inlet  420C5W 3 Phase 600 20A 5 3 4 Black
 520B9W  Pin and Sleeve inlet  520C9W 3 Phase Y120/208 20A 9 4 5 Blue
 520B7W  Pin and Sleeve inlet  520C7W 3 Phase Y277/480 20A 7 4 5 Red
 520B5W  Pin and Sleeve inlet  520C5W 3 Phase Y347/600 20A 5 4 5 Black
 330B4W  Pin and Sleeve inlet  330C4W 125 30A 4 2 3 Yellow
 330B6W  Pin and Sleeve inlet  330C6W 250 30A 6 2 3 Blue
 330B7W  Pin and Sleeve inlet  330C7W 480 30A 7 2 3 Red
 430B12W  Pin and Sleeve inlet  430C12W 125/250 30A 12 3 4 Orange
 430B9W  Pin and Sleeve inlet  430C9W 3 Phase 250 30A 9 3 4 Blue
 430B7W  Pin and Sleeve inlet  430C7W 3 Phase 480 30A 7 3 4 Red
 430B5W  Pin and Sleeve inlet  430C5W 3 Phase 600 30A 5 3 4 Black
 530B9W  Pin and Sleeve inlet  530C9W 3 Phase Y120/208 30A 9 4 5 Blue
 530B7W  Pin and Sleeve inlet  530C7W 3 Phase Y277/480 30A 7 4 5 Red
 530B5W  Pin and Sleeve inlet  530C5W 3 Phase Y347/600 30A 5 4 5 Black
 360B4W  Pin and Sleeve inlet  360C4W 125 60A 4 2 3 Yellow
 360B6W  Pin and Sleeve inlet  360C6W 250 60A 6 2 3 Blue
 360B7W  Pin and Sleeve inlet  360C7W 480 60A 7 2 3 Red
 460B12W  Pin and Sleeve inlet  460C12W 125/250 60A 12 3 4 Orange
 460B9W  Pin and Sleeve inlet  460C9W 3 Phase 250 60A 9 3 4 Blue
 460B7W  Pin and Sleeve inlet  460C7W 3 Phase 480 60A 7 3 4 Red
 460B5W  Pin and Sleeve inlet  460C5W 3 Phase 600 60A 5 3 4 Black
 560B9W  Pin and Sleeve inlet  560C9W 3 Phase Y120/208 60A 9 4 5 Blue
 560B7W  Pin and Sleeve inlet  560C7W 3 Phase Y277/480 60A 7 4 5 Red
 560B5W  Pin and Sleeve inlet  560C5W 3 Phase Y347/600 60A 5 4 5 Black
 3100R4W  Pin and Sleeve Receptacle  3100P4W 125 100A 4 2 3 Yellow
 3100R6W  Pin and Sleeve Receptacle  3100P6W 250 100A 6 2 3 Blue
 3100R7W  Pin and Sleeve Receptacle  3100P7W 480 100A 7 2 3 Red
 4100R12W  Pin and Sleeve Receptacle  4100P12W 125/250 100A 12 3 4 Orange
 4100R9W  Pin and Sleeve Receptacle  4100P9W 3 Phase 250 100A 9 3 4 Blue
 4100R7W  Pin and Sleeve Receptacle  4100P7W 3 Phase 480 100A 7 3 4 Red
 4100R5W  Pin and Sleeve Receptacle  4100P5W 3 Phase 600 100A 5 3 4 Black
 5100R9W  Pin and Sleeve Receptacle  5100P9W 3 Phase Y120/208 100A 9 4 5 Blue
 5100R7W  Pin and Sleeve Receptacle  5100P7W 3 Phase Y277/480 100A 7 4 5 Red
 5100R5W  Pin and Sleeve Receptacle  5100P5W 3 Phase Y347/600 100A 5 4 5 Black
 3100B4W  Pin and Sleeve inlet  3100C4W 125 100A 4 2 3 Yellow
 3100B6W  Pin and Sleeve inlet  3100C6W 250 100A 6 2 3 Blue
 3100B7W  Pin and Sleeve inlet  3100C7W 480 100A 7 2 3 Red
 4100B12W  Pin and Sleeve inlet  4100C12W 125/250 100A 12 3 4 Orange
 4100B9W  Pin and Sleeve inlet  4100C9W 3 Phase 250 100A 9 3 4 Blue
 4100B7W  Pin and Sleeve inlet  4100C7W 3 Phase 480 100A 7 3 4 Red
 4100B5W  Pin and Sleeve inlet  4100C5W 3 Phase 600 100A 5 3 4 Black
 5100B9W  Pin and Sleeve inlet  5100C9W 3 Phase Y120/208 100A 9 4 5 Blue
 5100B7W  Pin and Sleeve inlet  5100C7W 3 Phase Y277/480 100A 7 4 5 Red
 5100B5W  Pin and Sleeve inlet  5100C5W 3 Phase Y347/600 100A 5 4 5 Black
 3100P4W  Pin and Sleeve Plug  3100R4W  3100C4W 125 100A 4 2 3 Yellow
 3100P6W  Pin and Sleeve Plug  3100R6W  3100C6W 250 100A 6 2 3 Blue
 3100P7W  Pin and Sleeve Plug  3100R7W  3100C7W 480 100A 7 2 3 Red
 4100P12W  Pin and Sleeve Plug  4100R12W  4100C12W 125/250 100A 12 3 4 Orange
 4100P9W  Pin and Sleeve Plug  4100R9W  4100C9W 3 Phase 250 100A 9 3 4 Blue
 4100P6W  Pin and Sleeve Plug  4100R6W  4100C6W 380/415 100A 6 3 4 Red
 4100P7W  Pin and Sleeve Plug  4100R7W  4100C7W 3 Phase 480 100A 7 3 4 Red
 4100P5W  Pin and Sleeve Plug  4100R5W  4100C5W 3 Phase 600 100A 5 3 4 Black
 5100P9W  Pin and Sleeve Plug  5100R9W  5100C9W 3 Phase Y120/208 100A 9 4 5 Blue
 5100P6W  Pin and Sleeve Plug  5100R6W  5100C6W 200/346 / 240/415 100A 6 4 5 Red
 5100P7W  Pin and Sleeve Plug  5100R7W  5100C7W 3 Phase Y277/480 100A 7 4 5 Red
 5100P5W  Pin and Sleeve Plug  5100R5W  5100C5W 3 Phase Y347/600 100A 5 4 5 Black
 3100C4W  Pin and Sleeve Connector  3100P4W  3100B4W 125 100A 4 2 3 Yellow
 3100C6W  Pin and Sleeve Connector  3100P6W  3100B6W 250 100A 6 2 3 Blue
 3100C7W  Pin and Sleeve Connector  3100P7W  3100B7W 480 100A 7 2 3 Red
 4100C12W  Pin and Sleeve Connector  4100P12W  4100B12W 125/250 100A 12 3 4 Orange
 4100C9W  Pin and Sleeve Connector  4100P9W  4100B9W 3 Phase 250 100A 9 3 4 Blue
 4100C6W  Pin and Sleeve Connector  4100P6W  4100B6W 380/415 100A 6 3 4 Red
 4100C7W  Pin and Sleeve Connector  4100P7W  4100B7W 3 Phase 480 100A 7 3 4 Red
 4100C5W  Pin and Sleeve Connector  4100P5W  4100B5W 3 Phase 600 100A 5 3 4 Black
 5100C9W  Pin and Sleeve Connector  5100P9W  5100B9W 3 Phase Y120/208 100A 9 4 5 Blue
 5100C6W  Pin and Sleeve Connector  5100P6W  5100B6W 200/346 / 240/415 100A 6 4 5 Red
 5100C7W  Pin and Sleeve Connector  5100P7W  5100B7W 3 Phase Y277/480 100A 7 4 5 Red
 5100C5W  Pin and Sleeve Connector  5100P5W  5100B5W 3 Phase Y347/600 100A 5 4 5 Black
 430P6W  Pin and Sleeve Plug  430C6W  430R6W 380/415 30/32A 6 3 4 Red
 530P6W  Pin and Sleeve Plug  530C6W  530R6W 200/346
; 240/415
30/32A 6 4 5 Red
 460P6W  Pin and Sleeve Plug  460C6W  460R6W 380/415 60/63A 6 3 4 Red
 560P6W  Pin and Sleeve Plug  560C6W  560R6W 200/346
; 240/415
60/63A 6 4 5 Red
 4100P6W  Pin and Sleeve Plug  4100C6W  4100R6W 380/415 100/125A 6 3 4 Red
 5100P6W  Pin and Sleeve Plug  5100C6W  5100R6W 200/346
; 240/415
100/125A 6 4 5 Red
 430C6W  Pin and Sleeve Connector  430P6W  430B6W 380/415 30/32A 6 3 4 Red
    530C6W  Pin and Sleeve Connector  530P6W  530B6W 200/346
; 240/415
30/32A 6 4 5 Red
 460C6W  Pin and Sleeve Connector  460P6W  460B6W 380/415 60/63A 6 3 4 Red
 560C6W  Pin and Sleeve Connector  560P6W  560B6W 200/346
; 240/415
60/63A 6 4 5 Red
 4100C6W  Pin and Sleeve Connector  4100P6W  4100B6W 380/415 100/125A 6 3 4 Red
 5100C6W  Pin and Sleeve Connector  5100P6W  5100B6W 200/346
; 240/415
100/125A 6 4 5 Red

 

Where Is Pin and Sleeve Used?

It’s one thing to understand the pin and sleeve products themselves. It’s another thing to see the applications where the products are most frequently used. As an aid, we’ve taken some screenshots from Hubbell University to help illustrate various applications. It’s a great resource for someone trying to educate themselves in the space.

Food Processing

Food Processing is perhaps one of the biggest markets for pin and sleeve wiring devices. Due to the harsh requirements of a food processing plant, they require industrial electrical equipment that can hold up to the toughest standards. There is no tougher wiring device than pin and sleeve. Thus, if you tour the floor of a food plant, you’ll see “drop cords” (as referred to in the field) all over the facility for both fixed and portable equipment.

pin & sleeve food processing

Data Centers

While the data center industry does not have the same harsh environments, it takes a lot of current to power data centers. That’s why you’ll very often find pin and sleeve in data centers either above the PDU/server racks in a busway or below the floor. Additionally, data centers are an increasingly global business. Companies like Microsoft or Amazon are multinational entities and do not want to have different standards. Pin and sleeve works great in this instance because it is internationally recognized and configurable. There are even “dual rated” devices that will work for both the EU and US market. Either way, you’ll be hard-pressed to walk into a data center without finding pin and sleeve.

pin & sleeve data centers

Construction/Welding

Remember our article about welding receptacles? Well, you may have guessed but anywhere major fabrication or welding is occurring you’ll always find plenty of pin & sleeve. This would also include shipbuilders or other “old school” American manufacturing facilities. This may also be where you see the old metal style pin and sleeve products that will use the metal shell of the product as the grounding mechanism.

construction pin & sleeve

Marine

While Marinco and Hubbell Twist Lock products are certainly present for lower amperage products, pin and sleeve is used almost exclusively to provide shore power to large boats that require 60A or 100A power while docked in a marina. It’s also used for portable power distribution such as boat shows. This makes sense due to the IP 69 (and sometimes IP69k) ratings of the products; they are very comfortable near or in water.

pin & sleeve marine

Beverage

If you’ve been to a hip new brewery lately, they very well may be using pin and sleeve. If your local brewery still hasn’t started buying the industrial equipment yet, you can be sure that the big beer manufacturers have pin & sleeve all throughout their manufacturing plants. We’eve even seen them in rye or bourbon distilleries (although they will need to be explosion proof due to fumes).  Also, wineries use pin and sleeve as well. Look out for them the next time you are in Napa Valley!

Oil & Gas

Oil & Gas is a more specific line of pin & sleeve where hazardous products such as Killark or Crouse Hinds provide explosion proof pin and sleeve for portable equipment in processing areas of out on oil rigs.

pin & sleeve hazardous location

Entertainment

Believe it or not, pin and sleeve devices are in almost every major sports stadium in the US. How do you think they are able to move the sausage carts around to a different spot every week and maintain a safe electrical connection with thousands of people walking around? Pin and sleeve is also used for shows or concerts as higher amperage is usually required to support the high-intensity electrical needs of the shows.

pin & sleeve sport stadium

 

Pin & Sleeve Industry Summary

There is an endless number of industries where pin and sleeve is used. We could go on for months. However, you should now understand some of the primary industries that support pin & sleeve.

Where Is Pin and Sleeve Popular In the World?

As we’ve mentioned, pin and sleeve is an international standard founded in Europe. However, there are two major markets where you’ll find pin and sleeve wiring devices

IEC 60309 in Europe

IEC 60309 is the true standard in Europe. As mentioned earlier, about 90% of the devices in the market are splashproof, or IP 44. The most common amperages in the EU are 16, 32, 63 or 125. Additionally, the most common voltages are yellow, blue and red devices between 100-480V. Lastly, it is common in the EU that there’s an extra pin called a “pilot pin” for 63A and above. This smaller pin is designed to ‘make’ after all the other pins when connecting and to ‘break’ first when disconnecting. It is used to switch off the load which can help prevent arcing which may cause damage to both the equipment as well as the operator.

IEC 60309 in the US

While NEMA devices are definitely the market standard, IEC 60309 is still quite prevalent in the United States. However, there are some differences in their practical application than the European market. First, while almost 90% of EU devices are IP 44, the exact opposite is true in the US. Approximately 90% of the devices are at least IP 67 which is waterproof. It’s tough to know exactly why, but the US industrial market has adopted a stricter standard on water tightness. Nonetheless, the effect on the physical devices changes to incorporate a “locking ring” on the male device that provides extra protection against liquids.

In addition, the “pilot pin” mentioned earlier tends to not exist on Wiring Devices in the US. The amperage and corresponding voltage standards are also different. For example, the US amperages used in industrial are 20, 30, 60, and 100A and the most common voltages are 120, 250, and 480. In parts of Canada, 600V is common.

Who Makes Pin and Sleeve Products?

We are the only site that has accepted the challenge of aggregating and analyzing all of the pin and sleeve manufacturers in the US/North American market. It started with a 3-part series (find those here, here, and here) and now we’ve decided to publish it all in one place. Here is every manufacturer of these products that distribute in the United States!

ABB

ABB Pin and Sleeve catalog hero photo

Company Overview

ABB is a multinational conglomerate that operates in in robotics, power, heavy electrical equipment, and automation technology areas. They have 132,000 employees worldwide and have a heavy presence in the North America in all of their divisions.

Product Offering

In a sentence, ABB’s Pin and Sleeve wiring device offering in North America has historically been “complete but not a strategic priority”. They offer both splashproof (IP 44) and watertight (IP 67) versions of their products as well a complete line of plugs, connectors, inlets, and receptacles.  They have three main offerings which mimic their catalog offering: industrial devices, high amperage products, and food & beverage. While the high amperage products are somewhat self-explanatory, it’s worth noting that not all manufacturers go beyond 100/125A so this is a category where they might perform above average. Additionally, the main difference between their regular industrial Pin and Sleeve devices and their food & beverage line is that the latter are IP 69 rated. This means that they hold up to more extreme elements such as water and dust. It’s also critical to note that only the food & beverage line is advertised as UL/cUL Listed. It’s likely that these are the only products that are actively sold in the US/Canada.

New Developments

Recently, ABB came out with a new Industrial Wiring Device design and it looks has received some accolades:

ABB pin and sleeve plug/connector

It remains to be seen if they plan to put this line through UL testing. One thing’s for sure: once ABB decides to dive in, they will be a formidable force in the market.

Link To Catalogs

Appleton (Owned By Emerson)

Company Overview

Appleton is wholly owned by Emerson Electric, one of the biggest electrical product and engineering firms in the United States. While it’s hard to pin down exactly how many employees support the Appleton business, Emerson has approximately 111,000 employees and 205 manufacturing locations worldwide.

Product Offering

Appleton’s UL product line specializes in Class Rated/Explosion Proof devices. In fact, 6 of their 11 product offerings are specifically Class Rated. Accordingly, most of their products are metallic and range from 30A all the way up to 400A. Whereas some of the other manufacturers in the United States offer a comprehensive product line, Appleton focuses mostly on receptacles (not plugs or connectors) that are both interlocking and non-interlocking. However, worth mentioning that they offer more plugs and connectors with their CSA line. In one sentence, their offering can be described as “explosion proof, metallic receptacles”.

appleton wiring device

Link To Catalog

Arrow Hart (Owned by Cooper/Eaton)

arrow hart Pin and SleeveCompany Overview

The Arrow Hart line is a part of Cooper Wiring Devices which is owned by Eaton. Eaton is another electrical powerhouse in the United States and the Arrow Hart Pin and Sleeve line is just one small offering. Arrow Hart has been in the industry a long time and has developed a good reputation.

Product Offering

Arrow Hart offers a comprehensive Pin and Sleeve line consisting of plugs, connectors, receptacles, inlets, and interlocks. These products range from 20A to 125A and are UL/CSA approved. They also offer international products at 16A, 32A, 63A & 125A. Additionally, their devices are IP69K rated which is the highest rated in the industry (although some others have the same designation). Interestingly, their mechanical interlocks were private labeled by Mennekes which is why you’ll see the exact same products in the Mennekes catalog. We believe this relationship may have ended but their literature does not reflect it. All of their products are non-metallic. In a sentence, the Arrow Hart Pin and Sleeve products are  “complete, IP69k certified, and competitive in the market”.

arrow hart Pin and Sleeve brochure
Link To Catalog

Bryant (Hubbell Owned)

Bryant Pin and Sleeve

Company Overview

Bryant has a very interesting corporate background. It was founded in Bridgeport, CT and was the largest wiring device manufacturer in the world at one point. However, it ultimately dealt with labor issues and the company was sold to its current owner, Hubbell, in the early 1990s. Hubbell has kept the brand name on its products.

Product Offering

Bryant has a similar Pin and Sleeve offering from a pure product perspective to Arrow Hart, offering 16A-125A non-metallic plugs, connectors, receptacles, and inlets.  Bryant’s products are also UL/CSA listed. However, they do not carry the IP 69K rating but rather IP 67. In one sentence, Bryant’s Pin and Sleeve business is “safe, reliable, but Hubbell’s red-headed stepchild in the Pin and Sleeve business”. It’s clear that Hubbell’s investment dollars have gone to the flagship brand over Bryant in the years following their acquisition through no fault of their own.

bryant Pin and Sleeve
Link To Catalog

 

 

Hubbell

hubbell Pin and Sleeve logo

Company Overview

Hubbell is a Shelton, CT based company that is the unquestioned market leader in Pin and Sleeve in the US. Overall, they have two divisions: Electrical and Power Distribution. Pin and Sleeve products fall into the Electrical segment and operates under the name Hubbell Wiring Devices – Kellems. As of the end of 2016, Hubbell’s companywide revenue was north of $3.5B.

Product Offering

If you read Part 1, we covered Bryant’s product offering and mentioned that they are part of the Hubbell family. Therefore, it’s important to note that we are only analyzing Hubbell branded Pin and Sleeve devices. While research in this area is sparse, it is a safe estimate that Hubbell owns over 50% of the Pin and Sleeve market in the United States. That makes them the most dominant player by a large margin. It also means that they own the distribution channel in the US. If you go to the “Tier 1” industrial electrical distributors, you’ll find that they represent and sell Hubbell products. Their line is also probably the most complete. Because they are a US company, they do not have an international IEC 60309 offering (16A,32A, etc.) which many other competitors in the US market do offer. You can see an overview of their offering below which includes hazardous (class rated), low profile, and even metallic pin & sleeve:

Hubbell Pin and Sleeve offering

Hubbell sells two versions of their Pin and Sleeve products: Load Rated and Switch Rated. Their Load Rated products are their original Pin and Sleeve offering and are consistent with other brands. It is generally regarded as a strong product and is well received in the market. They look like this:

hubbell Pin and Sleeve

More recently, and likely in response to Meltric, Hubbell released the Advantage series which is a Switch Rated product. We will likely devote an entire post to this in the future so won’t go into deep detail. However, the product has a disconnecting means and the Advantage series now includes both a 30A and 60A offering which are the first and only IEC 60309-2 Pin and Sleeve Switch-Rated Devices on the market. The product looks like this:

Hubbell Advantage Pin and Sleeve

It’s still early to know whether this has made significant inroads against Meltric, but Hubbell’s release of this product acknowledges that Meltric has been taking market share from them recently. It will be interesting to see if other competitors respond accordingly.

Link To Catalog

Legrand (Pass & Seymour)

Company Overview

Legrand is another international powerhouse that amassed over $5B in revenue in 2016. They made their first formal foray into the North American market in 1984 with the creation of the subsidiary Pass & Seymour. When it comes to Pin and Sleeve, Legrand holds little recognition as Pass & Seymour is the branded channel in the US.

Product Offering

Pass & Seymour has a fairly standard offering in the US ranging from 20-100A as well as a 16A/63A offering for international applications. The most interesting feature of their product line is the external strain relief/clamping system. As you can see, while most strain relief systems are a separate piece, they are actually a part of the housing design:

P&S Pin and Sleeve

We’ve heard mixed reviews on these. From an installation and design standpoint, hinged cord grips seem like a great solution. However, the design seems like it would be more prone to breakage and potentially less watertight. Overall, it’s a good product but P&S seems more focused on Motor Disconnect Switches than Pin and Sleeve.

Link To Catalog

Leviton

Company Overview

Leviton is another American owned electrical company. Unlike Hubbell, they are privately owned. They mainly produce electrical light sockets, receptacles and outlets, switches, dimmers and mostly in the residential and commercial verticals.

Product Offering

Leviton offers a comprehensive line of industrial Pin and Sleeve wiring devices. While they don’t have the depth of a Hubbell such as hazardous or marine grade, they have a complete line of IP44, IP67, and IP69k Pin and Sleeve products that function for many different industries. They also have a full international line of watertight products (IP44). They also offer a nice array of accessory products such as caps, back boxes, and liquid-tight adapters.

leviton Pin and Sleeve

Link To Catalog

Meltric (Marechal)

Company Overview

Since 1952, Marechal Electric has been manufacturing electrical devices in France and in strict compliance with the requirements of international standards (IEC and UL). They have over 500 employees, have been around for 65 years, and their flagship product is the Meltric brand of plugs and receptacles.

Product Offering

Meltric is the most interesting Pin and Sleeve offering because they are completely unique. By that, we mean that they comply to the IEC 60309-1 standard but not the IEC 60309-2 standard. If this doesn’t make sense to you, please read our synopsis here. Because they do not mate with other Pin and Sleeve products, they are a more polarizing product line in that they are “all or nothing”. They have done a good job in the US carving out specific markets where they have succeeded. For example, they have a robust hazardous line, a high amperage line that goes up to 600A, a multipin product line, and even custom power distribution options. Their standard Pin and Sleeve offering will look like this:

meltric Pin and Sleeve

The Switch Rated feature of Meltric is attractive to some customers because they appreciate the added safety. It also removes the need for a Switched and Interlocked Receptacle if you were following both IEC 309 standards. However, feedback can sometimes be mixed.  We’ve also heard that these products are quite expensive, not easy to assemble, and not always ideal when it needs to be unplugged frequently as they are hard to mate. Their Pin and Sleeve catalog is over 250 pages – enjoy!

Link To Catalog

Mennekes

mennekes pin and sleeve

Company Overview

Mennekes is a smaller, privately held German company. They started in the United States roughly 30 years ago and have a full line of UL Listed pin and sleeve wiring devices. Their worldwide revenue is likely somewhere between $100-200M and their specialty is pin and sleeve. Mennekes is the market leader in Germany and a number of other EU markets.

Product Offering

Mennekes has a complete line of IEC 60309 products. This includes plugs, connectors, receptacles (switched or non-switched), and inlets. Overall, Mennekes has very high quality and is on par with Hubbell. In the US, they are considered to be second or third in market share in the US. Mennekes supports amperages from 20-100A; however, they have different product designs for different amperages. For example, their 20A plugs look like this…

mennekes 20A plug pin and sleeve

…while their 60A plugs look like this…

mennekes plug pin and sleeve

While both have a similar function, the design advantage clearly goes to the 60A and 100A pin and sleeve products. It will be interesting to see if the company standardizes in the coming years. One thing that Mennekes offers that no other IEC 60309-2 manufacturer can are their combination units. This allows multiple pin and sleeve wiring devices to be placed within a single enclosure.

Mennekes AMAXX pin and sleeve receptacle

However, unlike Meltric and Hubbell, Mennekes does not offer a switch rated product. With Hubbell entering the market recently, it will be interesting to see if Mennekes counters and introduces a similar product. They also do not have an IP69k rating on their pin and sleeve line (they only have an IP69 rating).

Link To Catalog

RussellStoll (Owned by Thomas & Betts/ABB)

russellstoll pin and sleeve

Company Overview

Russellstoll is the pin and sleeve wiring devices offering from Thomas & Betts, an American company that was purchased by ABB in 2012 for $3.9B. They still choose to carry the Russellstoll name in the United States.

Product Offering

Russellstoll offers three separate product lines for their pin and sleeve wiring devices:

Standard IEC 60309 Line

Russellstoll’s standard pin and sleeve offering is actually under the ABB name. It is essentially a UL adapted version of ABB’s international line which was covered earlier. Their amperages range from 16 up to 125 Amp, up to 600V, Watertight to IP67 and IP69K.

russellstoll pin and sleeve

In general, we don’t see these products too often in the US market. However, they are perfectly suitable devices.

DuraGard Waterproof Line

This DuraGard line is a pin and sleeve (but not IEC 60309 compliant) product line that was developed as a competitive product to Hubbell’s Twist Lock products and only go up to 60A. Because they do not follow the standard, we will not cover them in great detail but you should be aware that these exist in the market and are a solution sitting between Twist Locks and true pin and sleeve.

MaxGuard Explosion-Proof Line

Russellstoll’s most dominant product line is undoubtedly their explosion-proof products. They are considered a market leader in this space and compete with Appleton (also covered earlier) for first place. Most of their products are metallic and range from 30A to 400A. To complement this line, they also have a wide range of mounting options for receptacles and inlets. Often times, you can tell which product lines a company prioritized by the length of their catalog. Russellstoll’s explosion-proof catalog is longer than the two catalogs above combined.

 russellstoll pin and sleeve
Link To Catalog

Scame

scame pin and sleeve

Company Overview

Scame is an Italian company that specialized in wiring devices. They are a private company and were founded in 1963. Scame’s primary product lines are pin and sleeve wiring devices.

Product Offering

Scame manufactures pin and sleeve products to the IEC 60309 standard and entered the North American market a few years ago in an indirect way. Traditionally, a company has to go through distribution to gain a foothold. However, Scame largely used an online approach and partnered with ElecDirect to allow their products to be purchased online. Also, they have not gone through the trouble of getting their products UL Listed (only UL Classified – here’s the difference). However, they do offer a full product line from 16A to 125A and are IP 67 rated. We have heard that some customers are fine without a UL Listed product and this is a cheaper, easy to buy alternative to buying Hubbell through traditional distribution. It will be interesting to see if Scame gains traction in the US.

scame pin and sleeve

Link To Catalog

Walther

Company Overview

Walther was founded in 1897 and is headquartered in Eisenberg, Germany with full-service subsidiaries in The United States, The United Kingdom, France and Austria. They are a direct competitor with Mennekes in Germany.

Product Offering

Walther carries a full line of pin and sleeve. Their international offering is IP 44 and their domestic offering is IP 67. Because they are not IP 69 rated, you won’t find Walther in extremely harsh environments such as food processing or chemical manufacturing. Additionally, they also do not offer an explosion-proof or other specialty lines.

walther pin and sleeve

However, Walther is the only pin and sleeve manufacturer in the United States who has been able to get their compression-style strain relief system (the back of the plug – white crank piece below) through UL testing. This has allowed them to compete in the data center market and is likely their most successful industry application. As you can see, they even have a separate catalog around their data center program.

walther pin and sleeve

Link To Catalog

Woodhead

Company Overview

Woodhead is the wiring device offering from Molex, a 10,000+ person company headquartered in the United States that sells and distributes advanced electronic components and solutions.

Product Offering

Woodhead offers a very limited “true” IEC 60309 pin and sleeve offering. For North America, their products range from 20-100A and have IP 67 ratings but Woodhead just does not invest much in their pin and sleeve product line:

woodhead pin and sleeve

So, why are they included in this guide? Well, it’s quite simple. Woodhead is widely known in the market as a Twist Lock alternative in wet environments. They are the leader in watertight and waterproof lower amperage wiring devices and you will see these “yellow goods” on manufacturing floors throughout the country. Here’s the more common Woodhead product you’ll see in the market:

woodhead wiring devices

Link To Catalog

What are Alternatives to Pin and Sleeve?

Okay, enough about pin and sleeve. What other types of devices are used to make safe and dependable electrical connections? Before we dive in, it’s worth noting that we are considering “industrial” to cover the full scope of the industrial sector. From “light” industrial settings such as a plug and receptacle powering a small piece of machinery in a non-manufacturing are to the processing line in a food manufacturing, this should help guide you towards a practical electrical solution either way. We are going to be covering this in order of descending popularity (i.e most popular devices will be covered first).

Without further ado, here are the major categories of electrical wiring devices in North America…

NEMA Straight Blade & Locking Devices

       NEMA Locking Wiring Devices

Perhaps the most popular devices in the United States, NEMA locking devices, sometimes more commonly referred to as “Twist Locks”, are a means of energizing and de-energizing electrical equipment. They are called twist locks because once you make an electrical connection, you can lock the device in place. Each voltage/amperage has its own color coding (much like IEC Pin and Sleeve). This prevents operators from trying to de-energize under load which could creating arching and fatal error.  Most NEMA Twist Locks are 125 or 250V, single phase electricity but 3 phase, 480V is also a feasible configuration. The highest amperage option is 30A and anything higher than that would require a different type of device. Additionally, they only go up to 4 wires (no neutral pins exist for a 5th wire). The manufacturer with the most market share in the US is Hubbell-Kellems.

Nema twist lock wiring devices

Great when
  • Dry Areas
  • Low Amperage
  • Locking Devices Necessary
Bad For
  • Heavy Industrial Applications
  • Wet Areas/Washdown

NEMA Straight Blade Wiring Devices

Straight Blade devices share many of the same qualities as Twist Locks. They can actually go up to 60A but will not support any 3 phase configuration other than 3 phase, 250V. The obvious downside here is that there is no locking mechanism within the devices. This creates a potential safety issue. However, if there is no need for de-energizing the equipment or only very experienced operators will be dealing with it, it may be a risk worth taking.

nema straight blade wiring devices

Great when
  • Cost matters
  • De-energization Risk Low
Bad For
  • Heavy Industrial Applications
  • Wet Areas/Washdown
  • High Usage (plugging, unplugging frequently)

Watertight NEMA Straight Blade & Locking Wiring Devices

As you may have imagined, Twist Locks have evolved over the years and offered versions that are most water-resistant. These have given them higher IP Ratings such that many of these devices are now IP65, IP66, or IP67 rated. All of the watertight devices are yellow by industry standard. To be clear, they are still voltage rated by color (blue, red, black, etc.) and will be marked on the device but the housing itself should always be yellow. In the market, you will frequently hear these mentioned as “yellow goods”. Just as with the non-watertight devices, these commonly only go up to 30A. The most common manufacturer of yellow goods in the US is Woodhead. In fact, they are so popular that you may hear them used interchangeably in the field (even though we are showing Hubbell below).

watertight nema wiring devices

 

Great when
  • Water Present
  • Lower Amperages
  • Visibility Needed (always yellow)
Bad For
  • Low Operator Experience (all yellow, inexperience may try hard to mate)
  • Caustic Environments

Switch-Rated Wiring Devices

These are a cousin (or sometimes brother) of IEC 60309 Pin and Sleeve Devices. They are a combination of a Pin and Sleeve but have a mechanism, usually a button, that allows the load to be de-energized within the housing of the device. Another phrase for this would be “disconnecting under load”. This means that the risk of arching is lower. It is also “Switch Rated” whereas normal IEC Pin and Sleeve devices are “Load Rated”. They are also usually NEMA 4X (similar to regular P&S) rated and carry an IP 69K rating (whereas only some regular IEC 60309 devices have this designation). For a long time, Meltric was the only player in this market. Recently, Hubbell released their Advantage product.

meltric switch rated wiring devices

Great when
  • Arch Risk High
  • Water Heavy Environments
Bad For
  • Cost-Conscious Buyer (usually higher cost than regular Pin and Sleeve)
  • Caustic/Harsh Environments
  • Disconnecting frequently (usually harder to mate)

 

Grounded Wiring Devices

In the “old” days of US manufacturing, the Pin and Sleeve products were metallic. Thus, there was no necessity for a grounding pin and the metallic shell of the plug/connector acted as the grounding agent. This is now called Style 1. In more recent years, the same metallic devices added a ground pin for additional grounding and it was called Style 2. Hubbell does a nice job of explaining the difference below in their catalog:

Style 1

Receptacles achieve grounding by attaching the ground conductor to the ground screw inside the back box and utilizing the metallic receptacle shell as a ground source (see 3P 4W Style I illustration). Plugs and connectors establish grounding by means of connecting the flexible cable ground conductor to a ground terminal within each device, which, in turn, is grounded through the metallic plug or connector shroud. Any exposed metallic components are suitably grounded in the Style I offering.

Style 2

The Style II ground path offers two means of achieving the proper ground path. In addition to utilizing the same grounding method as in the Style I product, the Style II version incorporates a separate ground pin and sleeve (see 3P 4W Style II illustration). This provides a second ground path. The ground pin on Style II devices is longer than other pins, meaning that they “make first” and “break last,” assuring protection for people and equipment.

 

 

Where Can I Buy Pin and Sleeve?

So, by now you know almost everything you need to know about Hubbell plugs and want to get one. How do you buy them? There are two main ways to buy pin and sleeve wiring devices in the United States: traditional distribution or online.

Traditional Electrical Distributors

While the news is constantly disparaging the traditional distributor network, it is unquestionably the most common place to buy industrial electrical products. If 89% of retail sales still happen at a physical location, it’s a safe bet that far less than 10% of pin and sleeve products are bought online. Distributors still dominate the market and will for at least the short term. Why is that the case? Two main reasons:

  1. It is a more sophisticated sale. It’s not always just one plug or connector; big projects require extensive bills of material and cannot be purchased online
  2. The manufacturers do not benefit from their products being sold online. Whenever any product is sold online, pricing and margins shrink. The manufacturers of this product will fight to adapt until they know how they can benefit from E-Commerce

How many electrical distributors exist in the US? Here are some interesting stats on the National Association of Electrical Distributors:

  • Electrical Distribution is estimated to be a $72 billion industry.
  • Total # of locations of NAED Members: 4,263
  • Total # of employees in NAED member companies: about 75,000 distributor employees
  • Avg NAED member’s sales volume: $78,816,300
  • Median NAED member’s sales volume: $13,226,865
  • 40.4% of NAED members has revenue under $10 million

 

There are many thousands of electrical distributors in the US. Fortunately, we’ve already compiled the most extensive list of industrial electrical distributors in a previous post. Here’s that same list again for your enjoyment:

 

Distributor Name Headquarters
3e Electrical Engineering & Equipment Co. Windsor Heights, IA
A. E. Petsche Co. Inc. Arlington, TX
AC Lighting & Electrical Supplies Inc. Smithtown, NY
Ace Wire & Cable Co Inc. Woodside, NY
Active Electrical Supply Co. Chicago, IL
Advance Electrical and Industrial Supply Norcross, GA
Advance Electrical Supply Co. Chicago, IL
Alameda Electrical Distributors Hayward, CA
Allied Wholesale Electrical Supply Inc. Indianapolis, IN
Allsale Electric Inc. Canoga Park, CA
Alpha Electric Supply Kahului, HI
American Electric Supply Inc. Corona, CA
Amperage Electrical Supply Inc. Roselle, IL
Anixter Inc. Glenview, IL
Argo International Corp. New York
Arkansas Electric Cooperative Inc. Little Rock, AR
Atlanta Electrical Distributors Duluth, GA
Autonomy Technology Inc. Las Vegas, NV
B & K Electric Wholesale City of Industry, CA
B&S Electric Supply Co. Atlanta, GA
B.A. Robinson Winnipeg, MB
Barr-Thorp Electric Co. Merriam, KS
Baynes Electric Supply West Bridgewater, MA
Beacon Light & Supply Co. Hartford, CT
Beck Electric Supply Richmond, CA
Becker Electric Co. Dayton, OH
Bell Electrical Supply Santa Clara, CA
Benfield Electric Supply Co. White Plains, NY
Billows Electric Philadelphia
BJ Electric Supply Inc. Madison, WI
Black Electrical Supply Inc. Greenville, SC
Blazer Electric Supply Colorado Springs, CO
Border States Electric Fargo, ND
Brohl & Appell Inc. Sandusky, OH
Broken Arrow Electric Supply Broken Arrow, OK
Brownstown Electric Supply Co. Brownstown, IN
Buckles-Smith Santa Clara, CA
Bulbtronics Inc. Farmingdale, NY
Butler Supply St Louis, MO
C. N. Robinson Lighting Supply Co. Baltimore, MD
Candela Corp. Irvine, CA
Caniff Electric Supply Hamtramck, MI
Cape Electrical Supply Cape Girardeau, MO
CBT Cincinnati
CEE US Inc. West Columbia, SC
Central Electric Supply Ltd North Charleston, SC
Chancellor Inc. Laurel, MS
Chelsea Lighting NYC New York, NY
City Electric Orlando, FL
Codale Electric Supply Inc. Salt Lake City
Colonial Electric King of Prussia, PA
Columbia Electric Supply Inc. Brockton, MA
Connexion Buffalo Grove, IL
Consolidated Electrical Distributors Inc. Westlake Village, CA
Controller Service & Sales Co. Avon, MA
Cooperative Electric Energy Utility Supply (CEE-US) West Columbia, SC
Crescent Electric Supply East Dubuque, IL
Crum Electric Supply Co. Inc. Casper, WY
Dakota Supply Group Fargo, ND
Dealers Electrical Supply Waco, TX
Denney Electric Supply Ambler, PA
Desert Electric Supply Palm Desert, CA
Dickman Supply Inc. Sidney, OH
Diversified Supply Inc. Chattanooga, TN
Dominion Electric Supply Arlington, VA
Dulles Electric Supply Corp. Sterling, VA
E. Sam Jones Distributor Inc. Atlanta, GA
Earl O’ Neil Electrical Supply Ltd. Woodbridge, ON
ECHO Electric Supply Council Bluffs, IA
Eck Supply Co. Richmond, VA
Eckart Wholesale Supplies Corydon, IN
Edges Electrical Group San Jose, CA
Edison Equipment Columbus, OH
EEECOL Electric Corp. Calgary, AL
EIS Inc. (Genuine Parts Co.) Atlanta, GA
Electric Motor Sales & Supply Co. Chattanooga, TN
Elliott Electric Supply Nacogdoches, TX
Evergreen Oak Electric Supply and Sales Crestwood, IL
F.D. Lawrence Co., The Cincinnati, OH
Facility Solutions Group Austin, TX
Fastenal Winona, MN
Feldman Brothers Electrical Supply Co. Paterson, NJ
First SOURCE Electrical Houston, TX
Fletcher-Reinhardt Co. Bridgeton, MO
Forest Hills Electrical Supply Inc. Randolph, MA
Franklin Electric Co. Moorestown, NJ
French Gerleman St. Louis, MO
Fromm Electric Supply Reading, PA
Frost Electric Supply Co. Maryland Heights, MO
Furbay Electric Supply Co. Canton, OH
G&G Electric Supply New York, NY
Gaffney-Kroese Electrical Supply Corp. Somerset, NJ
Gallant & Wein Corp Long Island City, NY
General Pacific Inc. Fairview, PR
Gerrie Electric Wholesale Ltd. Burlington, ON
Glenbard Electric Supply Inc. Lombard, IL
Granite City Electric Quincy, MA
Grant Supplies Long Island City, NY
Graybar Electric Co. St. Louis, MO
Green Mountain Electric Supply Inc. Newport, VT
Gresco Utility Supply Inc. Forsyth, GA
Griffith Electric Supply Trenton, NJ
Gross Electric Toledo, OH
Grove Madsen Industries Reno, NV
Hannan Supply Co. Paducah, KY
Harry Cooper Supply Springfield, MO
Hartford Electric Supply Co. (HESCO) Rocky Hill, CT
HD Supply Atlanta
Hein Electric Supply Brookfield, WI
Hill Country Electric Supply Austin, TX
Hite Co. , The Altoona, PA
Horizon Solutions Rochester, NY
Houston Wire & Cable Houston
Hunt Electric Supply Burlington, NC
Hunzicker Brothers Inc. Oklahoma, OK
I.G. Federal Electrical Supply Corp. Long Island City, NY
IAC Supply Solutions Memphis, TN
Ideal Supply Co. Ltd. Listowel, ON
Idlewood Electric Highland Park, IL
IEWC (Industrial Electric Wire & Cable) New Berlin, WI
Independent Electric Supply Somerville, MA
Industrial Electric Wire & Cable New Berlin, WI
Inline Electric Supply Co. Huntsville, AL
International Electric Supply Corp. (IESC/Gexpro/Rexel)* Dallas
J. H. Larson Electrical Co. Plymouth, MN
JCH Wire & Cable Inc. N. Las Vegas, NV
JH Larson Co. Plymouth, MN
Johnson Electric Supply Co. Cincinnati, OH
K&M Electric Supply Inc. Riviera Beach, FL
K/E Electric Supply Mount Clemens, MI
Kaman Automation & Control (Kaman Corp.) Bloomfield, CT
Kansas City Electrical Supply Lenexa, KS
Kendall Electric Inc. Portage, MI
Kern Electrical Distributors Inc. Bakersfield, CA
Key Electrical Supply (of IES) Houston
Kirby Risk Electric Supply (Kirby Risk Corp.) Lafayette, IN
KJ Electric Syracuse, NY
Kovalsky – Carr Electric Supply Co. Inc. Rochester, NY
Kriz-Davis Co. Grand Island, NE
L.B. Electric Supply Co. Inc. Brooklyn, NY
Lasalle Electric Supply Livonia, MI
Leff Electric Brooklyn Heights, OH
Lewis Electric Supply Co. Inc. Muscle Shoals, AL
Loeb Electric Columbus, OH
LoneStar Electric Supply Houston, TX
Lowe Electric Supply Co. Macon, GA
Loyd’s Electric Supply Co. Branson, MO
Madison Electric Warren, MI
Main Electric Supply Santa Ana, CA
Maltby Electric Supply San Francisco
Mars Electric Co. Willoughby, OH
Mayer Electric Supply Co. Inc. Birmingham, AL
McNaughton McKay Electric Co. Madison Heights, MI
Medler Electric Co. Alma, MI
Meletio Lighting & Electrical Supply Dallas, TX
Metro Wire & Cable Corp. Sterling Heights, MI
Michigan Electric Supply Co. Flint, MI
Mid-Coast Electric Supply Inc. San Antonio, TX
Mid-Island Electrical Sales Corp. Commack, NY
Midtown Electric Supply Co. New York, NY
Mid-West Lighting Los Angeles, CA
Minarik Corp. Glendale, CA
Mission Controls & Automation San Antonio, TX
Munro Dist Co Inc. Fall River, MA
NEDCO Supply Las Vegas, NV
Needham Electric Supply / NESCO Canton, MA
Nelson Electric Supply Co. Inc. Racine, WI
North Coast Electric Co. Seattle, WA
Nu-Light Electrical Wholesalers Harahan, LA
Omni Cable West Chester, PA
OneSource Distributors LLC* Oceanside, CA
Paramont EO Woodridge, IL
Parrish-Hare Electrical Supply Dallas, TX
Peninsular Electric Distributors West Palm Beach, FL
PEPCO (Professional Electric Products Co. ) Eastlake, OH
Platt Electric Supply Beaverton, OR
Power & Telephone Supply Co. Memphis, TN
Priority Wire & Cable Inc. North Little Rock, AR
Professional Electric Products Co. (PEPCO) Eastlake, OH
QED, Inc. Las Vegas, NV
Raymond de Steiger Inc. Sterling Heights, MI
Regency Lighting Chatsworth, CA
Revco Lighting & Electrical Supply Southampton, NY
Revere Electric Supply Co. Chicago
Rexel Holdings USA (Rexel SA) Dallas, TX
Reynolds Co. , The Fort Worth, TX
Richards Electric Supply Cincinnati, OH
Robinson Electric Supply Co. Meridian, MS
Rockingham Electric Supply Newington, NH
Rumsey Electric Co. Conshohocken, PA
Rural Electric Supply Cooperative (RESCO) Middleton, WI
Samson Electrical Supply Co. South Plainfield, NJ
Schaedler Yesco Distribution Inc. Harrisburg, PA
Schwing Electrical Sales Corp. Farmingdale, NY
Scurlock Electric LLC Houma, LA
Seattle Lighting Fixture (Dolan Northwest llc) Seattle
Sequel Electric Supply LLC Meridian, MS
Shanor Electric Supply Buffalo, NY
Shealy Electrical Wholesalers Inc. Columbia, SC
Shepherd Electric Supply Baltimore, MD
Shingle & Gibb Automation Moorestown, NJ
Sonepar North America Paris, France
South Dade Electrical Supply Miami, FL
Springfield Electric Supply Co. Springfield, IL
St. Louis Metro Electric Supply Inc. St. Louis, MO
Standard Electric Co. Saginaw, MI
Stanford Electric Supply Inc. Corinth, MS
Stanion Wholesale Electric Co Inc. Pratt, KS
State Electric Supply Co. Huntington, WV
Steiner Electric Co. Elk Grove Village, IL
Steven Engineering South San Francisco, CA
Stokes Electric Co. Knoxville, TN
Stoneway Electric Supply Spokane, WA
Summit Electric Supply Albuquerque, NM
Sun Valley Electric Supply / Energy Electrical Distribution Las Vegas, NV
Sunrise Electric Supply Elmhurst, IL
Swift Electric Supply Co. Teterboro, NJ
Tacoma Electric Supply Tacoma, WA
TEC Manufacturing & Distribution Services Georgetown, TX
TEC Utility Supply & Service (Texas Electric Cooperatives, Inc.) Georgetown, TX
Teche Electric Supply Lafayette, LA
The Hartford Electric Supply Co. Inc. (HESCO) Rocky Hill, CT
The Reynolds Co. Fort Worth, TX
Thorpe Electric Supply Co. Rensselaer, NY
Torbram Electric Supply Corp. (City Electrical Factors) Caledon, ON
Treadway Electric Co. Inc. Little Rock, AR
Tri State Supply Co. Inc. Washington, PA
Tri-State Utility Products Inc. Marietta, GA
Turtle & Hughes Linden, NJ
United Electric Supply New Castle, DE
Upchurch Electrical Supply Co. Fayetteville, AR
Utility Supply & Service (Texas Electric Cooperatives Inc. ) Georgetown, TX
Valley Electric Supply Co. Vincennes, IN
Van Meter Inc. Cedar Rapids, IA
VEC Supply Charlottesville, VA
Villa Lighting Supply St. Louis
Voss Lighting Lincoln, NE
W.W. Grainger Inc. Lake Forest, IL
Wabash Electric Wabash, IN
Walters Wholesale Electric Signal Hill, CA
Warshauer Electric Tinton Falls, NJ
Werner Electric Cottage Grove, MN
WESCO Distribution Inc. Pittsburgh, PA
West Virginia Electric Supply Co. Huntington, WV
Western Extralite Kansas City, MO
West-Lite Supply Co. Cerritos, CA
Wholesale Electric Supply Co of Houston Houston, TX
Wildcat Electric Supply Houston, TX
Wille Electric Supply Co. Modesto, CA
Williams Supply Roanoke, VA
Willow Electrical Supply Co. Schiller Park, IL
Windy City Wire Bolingbrook, IL
Winkle Electric Co. Inc. Youngstown, OH
Winsupply Inc. Dayton, OH
WinWholesale Dayton, OH
Wolff Brothers Supply Inc. Medina, OH
Womack Electric & Supply Co. Inc. Danville, VA
Yale Electrical Supply Co. Inc. Lebanon, PA
Zeller Corp. Rochester, NY

 

E-Commerce

In a recent post, we dove into Amazon Business Prime Shipping and its potential impact on the industrial electrical industry. For those who want the short version, our basic conclusion was that Amazon could become a dominant force due to their ability to consolidate pricing if top-tier suppliers were to join the program. We wanted to highlight the current pricing disparity that exists in the online marketplace today. To do this, we took one of the most common Pin and Sleeve wiring device configurations from the biggest supplier, a Hubbell 420P7W. Then, we scraped the first page in Google for pricing that someone looking to purchase online would see. We then ordered them from highest to lowest. Pretty simple. A few caveats before we begin:

  1. We were just looking for the price of the item. This does not include shipping and handling charges
  2. This does not incorporate any special pricing. We did not create any accounts or look for bulk discounts. This would be an entirely different exercise
  3. We cannot be sure that all of these companies are authorized Hubbell pin and sleeve resellers. They could be selling them without the manufacturers’ permission

With those ground rules set, here are our observations for a person looking to buy a 3 pole, 4 wire, 20 A, 3 phase 480 V Hubbell Pin and Sleeve plug:

Newark.com – $188.34

Newark online 420P7W price

Newark.com had the highest price of the examples we chose. At $188.34, this may seem extreme but it was not a complete surprise to us. Now, it’s worth noting that they didn’t have any in stock so they either may not have the authorization to sell the product or sell a lot and just don’t have any on the shelves. Either way, it’s a steep price to pay for one Hubbell pin and sleeve plug.

Graybar.com – $160.55

graybar online 420P7W price

Graybar is one of the largest distributors in the United States. That being said, they were the second most expensive option to buy a 420P7W. At $160.55, it was certainly less expensive than the Newark.com pricing but the highest of a top tier online distributor.

Gamut.com – $153.92

gamut online 420P7W price

As part of Grainger’s well-documented strategy to move their business to 80% e-commerce, they launched Gamut.com this summer an an online-only branded channel. It seems that Gamut will share Grainger’s affinity for high prices but they do beat Graybar in this instance. And while it wasn’t part of our analysis, this would qualify for free shipping (anything over $99).

Zoro.com – $129.19

zoro online 420P7W price

Zoro.com is pricing competitively by selling a good $20-30 below the top tier distributors. Again, they are offering free shipping. Zoro is reputable but would not be considered a “tier one” online brand against a Grainger or Graybar but is still a perfectly acceptable place to buy electrical products such as a Hubbell pin and sleeve (especially at this price).

Stayonline.com – $118.75

stayonline online 420P7W price

Stayonline.com specializes in wiring devices. This may explain why they are able to get better pricing than others. Nonetheless, the combination of pricing and specialization is a great example of what kind of pricing we may see on a fully loaded Amazon platform.

Lockingpowercords.com – $112.00

lockingpowercords online 420P7W price

The second lowest price is courtesy of Lockingpowercords.com. This is almost $80 lower than the price from Newark.com. Their website states that “…We stock IEC60309 wiring devices from Hubbell, Cooper, Mennekes, and PCE” which indicates that they are not authorized resellers because we know for a fact that they do not have a reseller agreement with at least one of these companies.

Amazon.com (Rob’s Industrial) – $110.00

Amazon online 420P7W price

The last price is from Amazon itself. The reseller is Robs Industrial which has an independent website as well. There are very few options currently on Amazon for this product. That indicates to us that while Robs may have a reseller agreement of some kind, it’s likely not for online reselling.

Summing Up the Hubbell Pin and Sleeve 420P7W Exercise

We knew that pricing was variable online for Pin and Sleeve wiring devices. However, even we were surprised at the range of prices available on the first page of Google for a 420P7W. The highest option was 70% more expensive than the cheapest option. This shows the fragmentation that exists and is the opportunity that Amazon Business Prime Shipping is trying to capture.

What About Amazon?

Recently, Amazon announced that they were launching a B2B service called Amazon Business Prime Shipping but more easily known as Amazon Prime Business. Naturally, everyone overreacted and Industrial Suppliers across various verticals sank on the news. This included W.W. Grainger, which dropped over 5% when the announcement dropped. In this brief article, we will look at what the service entails, why it may be a threat to the current industrial electrical market, and why it may not matter at all.

Amazon Prime Business Overview

The highlights of the program include the following:

  • Free, two-day shipping benefits to all users with an Amazon Business account
  • It was only launched in the US and Germany, for now
  • Exclusive pricing and bulk discounts on over 5M SKUs

The pricing for the service is based on users. This is similar to a SaaS (software as a service) model where software licenses are sold by the number of people using the service. Here are the pricing tiers from Amazon’s website:

Amazon Business Prime Shipping pricing

In short, Amazon is copying the B2C Prime model and bringing it into the B2B market. Their idea, clearly, is that the market dynamics are the same. Therefore, Amazon Prime Business should have incredible success, right?

Why Amazon Prime Business Will Be a Hit

There’s a few reason that businesses overreact when Amazon encroaches on their turf.

  1. First, they have dominated a remarkable number of industries since their humble beginnings in books.
  2. Second, they have scale which allows them to consolidate purchasing power/shipping costs and enter into industries as a loss leader (willing to lose money to gain market share).
  3. Third, and most importantly for the industrial electrical market, they are able to consolidate pricing and supply. 

In our opinion, #1 and #2 are less of a concern to the large electrical incumbents such as Grainger or Fastenal. However, those could become a challenge to mid-sized distributors who are already racing to keep up with the traditional distribution channel changes that are starting to occur. As stated, the biggest reason that Amazon Business Prime could take over the industry will be because they are able to allow users to compare pricing across suppliers. In technology, this is called a “meta platform” (think TripAdvisor or Expedia aggregating hotel pricing). If they are able to get rich supply and great pricing from all of their suppliers, the current kings may not be on the throne much longer.

Why Amazon Prime Business Will Be a Flop

         Supply Side

Remember what we just said? The key to Amazon Prime Business becoming big will be “rich supply and great pricing”. Do we think they will get great pricing from any vendor that chooses to join? Simply, yes. They will force their suppliers to give them the best pricing because they are Amazon. However, they cannot force top tier suppliers to join. In areas of the industrial electrical world such as Pin and Sleeve wiring devices or motor disconnects, that means companies such as Hubbell, Legrand, Mennekes, Eaton, Square D, Meltric, etc. It is inevitable that second tier suppliers will choose to participate and they will gain some incremental sales. But if the tier one manufacturers don’t join, then Amazon won’t have a top tier offering and their customers won’t get a great experience.

         Demand Side

Everywhere you look, articles are being written about E-Commerce, the Internet of Things, and digitization. So, it may be logical to follow those B2B consumers are ready to make their industrial electrical purchases online. However, if you think about the MRO market (which is what Amazon Prime Business is attacking), it’s just not that simple. We are fortunate enough to know a lot of the people in the industry responsible for MRO purchasing. These people are extremely smart in many different ways but technology is not the driving force behind their buying process. Sometimes, it’s the relationship they have with their local distributor that they value. Sometimes, they prefer to order over the phone. We could go on and on, but the point is that a local of MRO transactions simply aren’t occurring online or Grainger would be much bigger than they already are. Sure, as millennials move into more Maintenance, Engineering, and Purchasing roles this may change but that remains to be seen.

Summing It Up

In conclusion, we understand the fear that runs deep in the industrial electrical market as Amazon Prime Business lines up to disrupt it. However, until a world-class, top-tier supplier such as Hubbell joins we aren’t going to be able to forecast whether it can be a success. If that happens and others follow suit, be warned: Amazon’s dominance will be swift and painful for everyone involved.

 

 

Wrapping It Up – What Have We Learned About Pin and Sleeve?

Congratulations…you made it all the way through! By now, you should know enough about pin and sleeve wiring devices to be dangerous. Let’s briefly review what was covered:

Pin and Sleeve-What Is It and Why Does It Exist?

Who Regulates Pin and Sleeve?

How Many IEC 60309 Standards Exist

How Pin and Sleeve Mate (Plus Top 176 Combinations)

Where Pin and Sleeve Is Used

Where Pin and Sleeve Is Popular In the World

Who Make Pin and Sleeve?

Alternatives to Pin and Sleeve

Where Can I Buy Pin and Sleeve? (Plus Top 259 US Electrical Distributors)

  1. While we know this is the best guide you’ll find, we are by no means perfect. Let us know what else you’d like to see in this guide and we will add future versions. Thanks for reading a plug on!