Cooper Wiring Devices Severe D...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$33.90
Cooper Wiring Devices Severe Duty NEMA 5-20R Connector

Cooper Wiring Devices Severe Duty NEMA 5-20R Connector

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Model: COOP1533

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

$33.90
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Cooper Wiring Devices Severe Duty NEMA 5-20R Connector

The Cooper Wiring Devices Severe Duty NEMA 5-20R Connector is a rugged, two-pole, three-wire cord connector built for demanding industrial and commercial electrical environments. Rated 20A at 125V, this connector features a durable Santoprene body and nickel-plated contacts designed to withstand harsh job-site conditions. Its cord range of 0.33-0.66" in diameter accommodates a variety of cordage, and the yellow and black color scheme improves job-site visibility.

Key Features

  • Cord Range: Accepts cordage from 0.33-0.66" in diameter for flexible field installation.
  • Durable Construction: Santoprene housing resists abrasion, chemicals, and impact for severe-duty use.
  • Contact Material: Nickel-plated contacts provide reliable, corrosion-resistant electrical connections.
  • NEMA Configuration: 5-20R connector configuration for compatible plug-and-connector pairing.
  • Electrical Rating: Rated 20A at 125V for standard commercial and industrial circuits.
  • Pole/Wire Configuration: Two-pole, three-wire design supports grounded circuit connections.
  • Color: Yellow and black housing for high job-site visibility.
  • Special Features: Severe duty rating for extended performance in tough environments.

Technical Specifications

  • Contact Material: Nickel-plated
  • Cord Range: 0.33-0.66" in diameter
  • Nema Configuration: 5-20R
  • Material: Santoprene
  • Voltage Rating: 125V
  • Color: Yellow, black
  • Number Of Poles: Two-pole
  • Number Of Wires: Three-wire
  • Design Type: Connector
  • Amperage Rating: 20A
  • Special Features: Severe duty

Typical Applications

  • Industrial and Commercial Power Distribution
  • Temporary Power and Extension Cord Assemblies
  • Construction Site and Job-Site Electrical Setups
  • Portable Equipment and Tool Power Connections
  • Severe-Duty and Harsh Environment Installations

Why Cooper Wiring Devices?

Cooper Wiring Devices engineers this Severe Duty connector with a Santoprene body and nickel-plated contacts to deliver dependable performance where standard connectors fall short. The two-pole, three-wire NEMA 5-20R configuration and 20A/125V rating make it a solid choice for professionals who need reliable, code-compliant connections on demanding job sites.

Manufacturer Resources

Product Specs

Contact Material:
Nickel-plated
Cord Range:
0.33-0.66" in diameter
Nema Configuration:
5-20R
Voltage Rating:
125V
Number Of Poles:
Two-pole
Number Of Wires:
Three-wire
Design Type:
Connector
Amperage Rating:
20A
Special Features:
Severe duty
Product Type:
Connector
Connection Type:
Severe Duty
Product Material:
Santoprene
Product Color:
Yellow, black
Department:
Electrical
Product Group:
Wiring Devices
Product Subgroup:
Plugs & Connectors

Cooper Wiring Devices COOP1533 – Frequently Asked Questions

1) What size cord will the Cooper 1533 severe duty connector accept?
The Cooper 1533 connector clamps cordage from 0.33 to 0.66 inch outside diameter. That covers most 12/3 and 14/3 SJTW and SOOW portable cord used for extension assemblies and temporary power. If your cable jacket measures under 0.33 inch or over 0.66 inch, the clamp won't grip properly and you need a different body.
2) Will a 5-20R connector accept a standard 5-15P plug from a tool?
Yes. The 5-20R configuration on the Cooper 1533 has a T-slot neutral, so it takes both a straight-blade 5-15P plug and a 20A 5-20P plug with the turned neutral blade. That is why it works on job sites where you are powering a mix of 15A and 20A corded tools off one circuit.
3) Can I use this connector on a 240V or three-phase circuit?
No. The 1533 is rated 20A at 125V only, two-pole three-wire, which is single-phase line, neutral, and ground. For 250V or three-phase you need a different NEMA configuration entirely, and the blade pattern is physically different so it won't mate anyway.
4) Is the Cooper 1533 severe duty connector watertight for outdoor or washdown use?
The Cooper 1533 is a severe duty connector with a Santoprene housing that resists abrasion, chemicals, and impact, and it accepts cordage from 0.33 to 0.66 inch in diameter. Severe duty and watertight are different claims. Where the connection sits in standing water, washdown, or direct weather, the Pass and Seymour Turnlok 27W series is a 20A watertight connector rated NEMA 4X/6P in yellow, and Bryant's WPC series is a weatherproof wiring connector fitting. Note the Turnlok is a twist-type locking interface rather than the straight blade 5-20R configuration of the Cooper 1533, so the mating plug has to change with it.
5) If a healthcare facility needs a 5-20R connector, is the Cooper 1533 the right one?
The Cooper 1533 is a severe duty 5-20R connector with a Santoprene body - it is built for job-site and industrial abuse, not for patient-care area requirements. Where a hospital grade 5-20R is called for, the Leviton 8319-C is the hospital grade connector in the same 5-20R configuration, supplied in black in packs of 100. If the facility need is a 5-15R instead of 5-20R, the Bryant 8269T is a hospital grade connector in the 5-15R configuration. Match the receptacle configuration first, then the grade your facility spec requires.
6) What is the closest equivalent to the Cooper 1533 severe duty 5-20R connector from another brand?
The Leviton 15W33 industrial grade straight blade connector is the nearest match on electrical configuration: it is a 2-pole, 3-wire connector rated 125V 20A, the same pole and wire count and the same 20A/125V rating as the Cooper 1533. The difference is in the body - the Cooper 1533 uses a Santoprene housing in yellow and black with a severe duty designation and nickel-plated contacts, while the Leviton is designated industrial grade. If the opening is a standard 20A 125V cord assembly, either covers the configuration; the Santoprene severe duty body is what you specify when the cord set is being dragged, crushed, or exposed to chemicals.
7) Is this connector the female end or the plug end of a cord assembly?
It's the female end. A 5-20R connector is the receptacle half that goes on the cord, so it mates with a 5-20P or 5-15P plug on a tool or appliance cord. If you need the male end for the supply side of the assembly, you want a plug, not this body.
8) Will the Cooper 1533 hold up on a construction site where cords get dragged and run over?
That's what the Santoprene body is for. It's a thermoplastic elastomer that takes abrasion, impact, and chemical exposure far better than rigid nylon, so the housing flexes instead of cracking when a cord end gets stepped on or pulled across concrete. The yellow and black coloring also makes the end easy to spot in a trench or under scaffolding.
9) What is a comparable 20A 125V connector if I'm standardizing on another brand?
The closest peer is the Leviton Industrial Grade straight blade connector, 3-wire 2-pole, 125V 20A, which matches the Cooper 1533 on amperage, voltage, and pole/wire count. The Cooper differs in its Santoprene severe duty body and yellow/black coloring. If you need watertight instead of severe duty, the Pass & Seymour Turnlok 27W Series is the 20A option.
10) Does the Cooper 1533 connector ground the equipment it powers?
Yes. It's a two-pole, three-wire device, meaning hot, neutral, and an equipment grounding conductor, so the ground path carries through to the tool or appliance as long as the cord has a ground wire landed on the green terminal and the supply end is grounded.
11) For building a quantity of extension cord assemblies, which connector should I standardize on?
It depends on the environment the cords live in. The Cooper 1533 is a 5-20R severe duty connector with a Santoprene body in yellow and black for job-site visibility, taking cord from 0.33 to 0.66 inch diameter - that is the one for construction temporary power and portable tool cords. If the assemblies are for a healthcare facility, the Leviton 8319-C is a hospital grade 5-20R connector supplied in packs of 100, which suits volume cord-set building. The Leviton 15W33 industrial grade connector covers the same 2-pole 3-wire 125V 20A circuit in a general industrial build.
12) Why nickel-plated contacts instead of brass on a cord connector?
Nickel plating on the 1533's contacts resists corrosion, which matters on connectors that live outdoors or in damp and chemically dirty environments where a bare brass blade contact oxidizes and starts running hot under a 20A load. It is part of why this body is specified for severe duty rather than general indoor use.
How fast can I get the Cooper Wiring Devices COOP1533 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 COOP1533 come with a warranty?
Absolutely. The Cooper Wiring Devices COOP1533 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 COOP1533?
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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