Cooper Wiring Devices Severe D...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$45.26
Cooper Wiring Devices Severe Duty Plug, Santoprene

Cooper Wiring Devices Severe Duty Plug, Santoprene

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Model: COO-1433

In Stock (leaves warehouse same day if ordered before 3pm ET)

$45.26
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Cooper Wiring Devices Severe Duty Plug, Santoprene

The Cooper Wiring Devices Severe Duty Plug is a rugged straight-blade plug built for demanding industrial and jobsite power connections. Configured as a NEMA 5-20P, two-pole, three-wire plug rated 20A at 125V, it pairs a flexible Santoprene body with nickel-plated contacts for dependable conductivity under repeated use. A cord range of 0.38-1" in diameter allows it to accommodate a wide variety of cable and cord sizes, making it a versatile choice for tool, equipment, and extension-cord assemblies where standard-duty devices fall short.

Key Features

  • Cord Range: Accepts cords from 0.38-1" in diameter, supporting a broad range of cable assemblies.
  • Durable Construction: Santoprene body resists impact, abrasion, and flexing in tough field conditions.
  • Electrical Rating: Rated 20A at 125V with a two-pole, three-wire, NEMA 5-20P configuration for reliable straight-blade connections.
  • Contact Material: Nickel-plated contacts deliver consistent conductivity and long-term reliability.
  • Severe Duty Design: Special severe-duty construction is built to withstand harsh industrial and outdoor environments.
  • High-Visibility Color: Yellow and black housing improves jobsite visibility and identification.

Technical Specifications

  • Contact Material: Nickel-plated
  • Cord Range: 0.38-1" in diameter
  • Material: Santoprene
  • Voltage Rating: 125V
  • Color: Yellow, black
  • Number Of Poles: Two-pole
  • Number Of Wires: Three-wire
  • Design Type: Plug
  • Amperage Rating: 20A
  • Nema Configuration: 5-20P
  • Special Features: Severe duty

Typical Applications

  • Industrial and Commercial Power Cord Assemblies
  • Portable Tool and Equipment Connections
  • Outdoor and Jobsite Power Distribution
  • Heavy-Duty Extension Cord Repair and Replacement
  • Harsh or High-Traffic Work Environments

Why Cooper Wiring Devices?

Cooper Wiring Devices engineers its severe-duty line with rugged Santoprene housings and nickel-plated contacts specifically to hold up to the wear, moisture, and impact common on industrial and outdoor jobsites. This Severe Duty Plug's 20A, 125V, NEMA 5-20P configuration ensures compatibility with standard straight-blade receptacles while delivering the durability professionals expect from Cooper Wiring Devices for demanding electrical work.

Manufacturer Resources

Product Specs

Contact Material:
Nickel-plated
Cord Range:
0.38-1" in diameter
Voltage Rating:
125V
Number Of Poles:
Two-pole
Number Of Wires:
Three-wire
Design Type:
Plug
Amperage Rating:
20A
Nema Configuration:
5-20P
Special Features:
Severe duty
Product Type:
Plug
Product Material:
Santoprene
Product Color:
Yellow, black
Department:
Electrical
Product Group:
Wiring Devices
Product Subgroup:
Plugs & Connectors

Cooper Wiring Devices COO-1433 – Frequently Asked Questions

1) What cord diameter does the Cooper 1433 severe duty plug accept?
The clamp range is 0.38 to 1 inch outside diameter, which covers most 16/3 through 10/3 SJTW and SOOW jobsite cord. That wide range is why it works for rebuilding heavy extension cords as well as smaller tool leads. Measure the jacket OD of your cord, not the wire gauge, before you commit.
2) Can I use this plug to rewire a 20-amp extension cord for a table saw?
Yes, that is what the 1433 is built for. It is a two-pole, three-wire straight blade plug rated 20A at 125V, so it carries hot, neutral, and equipment ground for a single-phase 120V tool. Match the cord conductor size to the 20A load, and confirm the cord jacket falls in the 0.38 to 1 inch clamp range.
3) I need a 20A 125V plug for patient-care equipment in a hospital. Is the Cooper severe duty plug the right choice?
No. Severe duty is an industrial construction, not a hospital grade listing, so the 1433 is not the device for patient-care cord sets. For a hospital-grade 5-20P use the Bryant 8395T angle hospital-grade plug; for 5-15P, the Bryant 8266T hospital grade plug.
4) What should I use instead of the Cooper 1433 plug on a 15A 125V cord assembly?
The Cooper Wiring Devices 1433 is configured NEMA 5-20P at 20A, 125V. For a 15A 125V cord, the Eaton Arrow Hart Ultra Grip straight blade plug is a 15A 125V industrial grade device, and the Pass & Seymour PS5266X is a 15A 125V extra-hard-use spec grade plug in a nylon housing. Both keep the straight blade format at the lower amperage rating, while the Cooper's 5-20P blade will not enter a standard 15A receptacle.
5) What is the closest alternative to the Cooper 1433 severe duty plug if a 20A 125V straight blade plug is needed in an angled body?
The Cooper Wiring Devices 1433 is a straight-blade plug rated 20A at 125V in a NEMA 5-20P configuration with a Santoprene body. If the cord needs to exit at an angle so the plug sits flatter against the wall or equipment, the Pass & Seymour EHU angled straight blade plug is also a 20A 125V straight blade device but in an angled housing. The Cooper keeps the inline body with the severe-duty Santoprene shell; the P&S trades that for the angled cord exit.
6) If a healthcare facility needs a 20A 125V plug, is the Cooper 1433 severe duty plug acceptable?
The Cooper Wiring Devices 1433 is a severe-duty industrial plug in Santoprene, built for jobsite and harsh-environment cord assemblies rather than patient-care areas. For hospital-grade requirements at the same 5-20P configuration, the Bryant 8395T is an angle plug carrying a hospital grade rating with a NEMA 5-20P configuration. At 5-15P, the Bryant 8266T is hospital grade. Choose the Bryant devices where the facility requires hospital grade; choose the Cooper where impact and abrasion resistance drive the decision.
7) Is a Santoprene plug body better than nylon for outdoor and jobsite cord repair?
They solve different problems. The Cooper 1433 uses a flexible Santoprene body, so it takes impact, abrasion, and repeated flexing where a cord gets dragged, run over, or coiled cold. Rigid nylon housings, like the Pass & Seymour PS5965Y MaxGrip M3 cord plug, are harder-shelled and hold their shape but do not flex the same way. For drops that live on a concrete slab or outside, the rubber-type body is the usual pick.
8) Straight body or angled plug for a 20A 125V cord?
The Cooper 1433 is a straight body plug, which is what you want on a cord that hangs free or plugs into temp power. Where the receptacle sits behind equipment or against a wall and a straight plug would get levered on, an angled version relieves that strain. The Pass & Seymour EHU angled straight blade plug is a 20A 125V angled option.
9) Is the Leviton 5666-C a substitute for the Cooper 1433 severe duty plug?
No. The Leviton 5666-C is a 3-wire 2-pole polarized industrial grade straight blade plug rated 250 volt, single phase. The Cooper Wiring Devices 1433 is a two-pole, three-wire plug rated 125V in a NEMA 5-20P configuration. The wire and pole count match, but the voltage class does not, so the two plugs mate to different receptacles and are not interchangeable.
10) What is the difference between the Cooper 1433 severe duty plug and the Pass & Seymour MaxGrip M3 yellow cord plug?
Both are yellow cord plugs for field cord assemblies. The Cooper Wiring Devices 1433 uses a Santoprene body with nickel-plated contacts and is a yellow and black severe-duty device. The Pass & Seymour PS5965Y MaxGrip M3 is a nylon cord plug in yellow. The choice comes down to housing material: flexible Santoprene versus rigid nylon.
11) I need a plug for a higher-amperage 250V circuit, not the Cooper 1433 - what fits?
The Cooper Wiring Devices 1433 is limited to 20A at 125V. For higher-current 250V service, the Leviton 931-E is a commercial grade 3-wire 2-pole straight blade plug rated 250V AC at 30/50 amps, and the Bryant 7516NC is a rubber plug in the NM10-50P series. Both move well above the Cooper's rating and use different blade configurations, so the receptacle must match.
12) Why is this plug yellow and black, and does the color matter on a jobsite?
The yellow and black housing is there for visibility. On a floor full of cords, a high-visibility body makes the end easier to spot and easier to identify as the severe duty 20A drop rather than a lighter-duty cord. Pass & Seymour's MaxGrip M3 cord plug is also offered in yellow if you are standardizing on a color across a fleet of cords.
13) Do the nickel-plated contacts on this plug make a difference for cords that get unplugged constantly?
That is the reason for them. The 1433 uses nickel-plated contacts, which hold conductivity through repeated insertion and removal rather than degrading at the blade face. On rental tools, temp power, and shop cords that get cycled many times a day, that plus the Santoprene body is the whole argument for a severe duty plug over a standard-duty one.
14) What is the Cooper Wiring Devices part number for this severe duty plug?
Order it as Cooper Wiring Devices 1433. It is a single configuration, 20A 125V NEMA 5-20P in Santoprene, so there are no finish or size choices to specify beyond confirming your cord OD falls between 0.38 and 1 inch.
15) For a washdown or wet location, is the Cooper 1433 severe duty plug the right pick?
The Cooper Wiring Devices 1433 is a severe-duty plug with a Santoprene body built to resist impact, abrasion, and flexing on industrial and outdoor jobsites, and it takes cords from 0.38 to 1 inch in diameter. Where a sealed watertight connection is specified, the Bryant 8666TSP is a watertight hospital-grade plug in the N6-15P configuration, though that is a different blade pattern and a lower amperage class than the Cooper's 5-20P.
How fast can I get the Cooper Wiring Devices COO-1433 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Cooper Wiring Devices COO-1433 come with a warranty?
Absolutely. The Cooper Wiring Devices COO-1433 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Cooper Wiring Devices COO-1433?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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