Cooper Wiring Devices Locking ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$137.14
Cooper Wiring Devices Locking Connector, 50A 3-Pole 4-Wire, 125/250V Nylon

Cooper Wiring Devices Locking Connector, 50A 3-Pole 4-Wire, 125/250V Nylon

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Model: CS6364EX

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

$137.14
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Cooper Wiring Devices Locking Connector, 50A 3-Pole 4-Wire, 125/250V Nylon

The Cooper Wiring Devices Locking Connector is a heavy-duty 3-pole, 4-wire locking device rated 50A at 125/250V, built with a durable nylon housing for demanding industrial power connections. Designed to California standard, non-NEMA configuration, this connector accepts an allowable wire size of #10-6 AWG and is intended for back-wiring installations. Its rugged construction and secure locking action make it well suited for industrial equipment and machinery where a reliable, twist-lock connection is required.

Key Features

  • Amperage & Voltage Rating: Rated 50A at 125/250V for demanding industrial power applications.
  • Pole & Wire Configuration: Three-pole, four-wire design for reliable multi-conductor connections.
  • Durable Construction: Molded nylon housing provides impact resistance and long service life in industrial settings.
  • Wiring Method: Back-wired terminals simplify field termination.
  • Allowable Wire Size: Accepts #10-6 AWG conductors for flexible wire gauge compatibility.
  • Cord Diameter Range: Accommodates cord diameters from 0.44 to 1.25 in.
  • Color-Coded Housing: Available in black and red for easy circuit identification.
  • Configuration: Non-NEMA configuration built to California standard for specified industrial applications.

Technical Specifications

  • Amperage Rating: 50A
  • Material: Nylon
  • Voltage Rating: 125/250V
  • Number Of Poles: Three-pole
  • Number Of Wires: Four-wire
  • Allowable Wire Size: #10-6 AWG
  • Wiring Method: Back
  • Standard: California standard
  • Nema Configuration: Non-NEMA
  • Cord Diameter: 0.44 to 1.25 in
  • Color: Black, red

Typical Applications

  • Industrial and Commercial Power Connections
  • Heavy-Duty Equipment and Machinery Wiring
  • Temporary and Portable Power Distribution
  • Panelboard and Load Center Connections
  • Renovation and New Construction Projects

Why Cooper Wiring Devices?

Cooper Wiring Devices builds this locking connector with a rugged nylon housing and a 50A, 125/250V three-pole four-wire configuration engineered for dependable performance in industrial environments. The back-wiring method and wide allowable wire size range of #10-6 AWG support efficient, secure field terminations. Choose Cooper Wiring Devices for durable, code-compliant electrical connectors built for professional industrial applications.

Manufacturer Resources

Product Specs

Voltage Rating:
125/250V
Wiring Method:
Back
Number Of Poles:
Three-pole
Allowable Wire Size:
#10-6 AWG
Standards:
California standard
Application:
Industrial
Nema Configuration:
Non-NEMA
Amperage Rating:
50A
Number Of Wires:
Four-wire
Cord Diameter:
0.44 to 1.25 in
Product Type:
Locking Connector
Product Material:
Nylon
Product Color:
Black, red
Department:
Electrical
Product Group:
Wiring Devices
Product Subgroup:
Plugs & Connectors

Cooper Wiring Devices CS6364EX – Frequently Asked Questions

1) What size wire can I land in the Cooper CS6364EX 50A locking connector?
Terminals accept #10 through #6 AWG conductors, and it is a back-wired device, so conductors land from the rear rather than under a wrap-around screw. At 50A you are realistically on #6 copper; the #10 end of the range exists for smaller feeder taps on the same body.
2) Three-pole four-wire at 125/250V, does that mean I get both 120V and 240V through this connector?
Yes. Three poles plus a ground gives you two hots, a neutral and an equipment ground, which is what lets a single 50A drop feed 240V loads and 120V control or convenience circuits off the same cord. It is the same wiring arrangement as a 14-series device, just in the California non-NEMA configuration.
3) Is there a NEMA-configured 3-pole 4-wire 125/250V connector I can use instead of the California standard one?
If your existing plugs are NEMA rather than California standard, the Leviton industrial 4-wire 3-pole 125/250V locking connector is the same pole and wire arrangement in an industrial grade body. The Cooper CS6364EX will not intermate with it, so pick one configuration and stay with it across the equipment.
4) What is the closest alternative to the Cooper CS6364EX if the equipment cord end is a standard NEMA locking configuration instead of California standard?
The Cooper CS6364EX is a non-NEMA device built to California standard, so it will not mate with a NEMA locking plug even at the same 125/250V rating. For a NEMA-configured 3-pole 4-wire 125/250V connection, the Leviton 2413 industrial locking connector is the 4-wire 3-pole 125/250V equivalent, and the Eaton Arrow Hart Ultra-Grip L1420-C is a NEMA L14-20 connector rated 20A at 125/250V. Confirm the configuration stamped on the mating plug before ordering either, because California standard and NEMA bodies are deliberately non-interchangeable.
5) What locking connector should I use instead of the Cooper CS6364EX for a three-phase circuit with a neutral?
The Cooper CS6364EX is a three-pole four-wire device rated 125/250V, which suits single-phase three-wire plus ground service, not three-phase wye with a separate neutral. For a four-pole five-wire arrangement, the Leviton 2323 is a 5-wire 4-pole industrial grade locking connector rated 20A. Match the pole and wire count to the circuit first; the amperage difference between the two is secondary to getting the conductor count right.
6) Which locking connectors look like a substitute for the Cooper CS6364EX but will not actually mate with it?
Several will not. The Leviton 2313 is a 125V 30A two-pole three-wire NEMA L5-30R device - single voltage, one fewer pole. The Eaton 7506 is a NEMA L1-15 industrial grade connector, a small two-wire configuration. The Eaton L1420-C is NEMA L14-20 at 20A 125/250V, which shares the voltage but not the amperage or the body. None of these will engage the Cooper CS6364EX, which is a 50A non-NEMA California standard body. The mating half has to be the same California standard configuration.
7) What cord diameter will fit through the CS6364EX cord grip?
The clamp takes cord from 0.44 in up to 1.25 in outside diameter. That covers most 6/4 and 8/4 portable cord used on 50A equipment drops. Anything thinner than 0.44 in will not be gripped properly and anything over 1.25 in will not seat in the body.
8) Can I use the Cooper CS6364EX as the receptacle end on a wall or panel?
No. It is a connector, the female cord-mounted end that terminates a flexible cord and accepts a plug. It is not a flush or surface receptacle and has no mounting strap for a box or panel. For a fixed 50A California-standard outlet you need the matching receptacle or inlet device instead.
9) I only need about 30 amps on a 250V single-phase load - is there a smaller locking connector than the Cooper CS6364EX?
Yes. The Cooper CS6364EX is rated 50A and carries three poles and four wires, which is more device than a simple 250V two-wire load needs. The Eaton Arrow Hart Ultra Grip L530C is an L6-30 series locking connector rated 30A, two-pole three-wire, in a nylon body - the right size when the load is 250V without a neutral. Step back up to the CS6364EX when you need the full 50A and a neutral conductor.
10) Is there a non-metallic locking connector comparable to the Cooper CS6364EX for corrosive or washdown areas?
The Cooper CS6364EX already uses a molded nylon housing rather than metal, so it is a non-metallic body suited to industrial service. If you are standardizing a fleet of non-metallic devices, the Bryant 71020NC is a 7 Series non-metallic NEMA locking connector and the Bryant 70520NCC is the 705 Series equivalent. Note that the Bryant units are NEMA-configured while the Cooper CS6364EX is California standard, so they serve different mating plugs rather than replacing each other.
11) For a 50A portable power feed with heavy cord, does the Cooper CS6364EX handle a larger cable than the Leviton or Eaton industrial connectors?
The Cooper CS6364EX accepts #10 to #6 AWG conductors and cord diameters from 0.44 to 1.25 in, with back-wired terminals for field termination - that range covers the heavier portable cable used on 50A temporary distribution. Among the industrial-grade alternatives, the Leviton 2413 is the 4-wire 3-pole 125/250V device and the Leviton 2423 is another industrial grade locking connector, both suited to fixed industrial equipment. Choose the Cooper CS6364EX when the cord gauge and jacket diameter are the governing constraint.
12) Is the black and red on this Cooper connector a color option or a rating difference?
Color only. The CS6364EX body is offered in black and red, and the red is commonly used to flag a separate circuit or a different voltage feed on the floor so crews do not cross-plug equipment. Electrical ratings are identical.
13) Is a nylon-bodied locking connector tough enough for a shop floor or should I be looking at metal?
Nylon is the standard body material for industrial-grade twist-lock cord connectors and handles impact and the oils and solvents found around machinery. The CS6364EX is built for industrial use. If you specifically need a metal-shelled device, this is not it, but for portable power and equipment cords nylon is what most spec grade devices use.
How fast can I get the Cooper Wiring Devices CS6364EX 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 CS6364EX come with a warranty?
Absolutely. The Cooper Wiring Devices CS6364EX 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 CS6364EX?
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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