Cooper Wiring Devices CS-6370 ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$70.22
Cooper Wiring Devices CS-6370 Non-NEMA Locking Receptacle, 50A Two-Pole Three-Wire

Cooper Wiring Devices CS-6370 Non-NEMA Locking Receptacle, 50A Two-Pole Three-Wire

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Model: COOPCS8275
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$70.22
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Cooper Wiring Devices CS-6370 Non-NEMA Locking Receptacle, 50A Two-Pole Three-Wire

The Cooper Wiring Devices CS-6370 Non-NEMA Locking Receptacle is engineered for demanding industrial electrical applications where a secure, high-amperage connection is required. This two-pole, three-wire device features a non-NEMA configuration and a back-wiring method that accepts an allowable wire size of #10-6 AWG, and it is manufactured to a California standard specification. This receptacle is offered as a family, available in Black and Steel housing colors and in 125/250 volt and 250 volt configurations, so buyers can match the exact color and voltage combination required for a given industrial circuit while relying on the same rugged 50A, two-pole, three-wire platform across every option.

Key Features

  • Amperage Rating: Rated 50A for high-current industrial circuits and demanding power loads.
  • Number of Poles: Two-pole configuration for reliable industrial circuit connections.
  • Number of Wires: Three-wire design supporting proper circuit and grounding configuration.
  • Wiring Method: Back-wired termination for a secure, industrial-grade connection.
  • Allowable Wire Size: Accepts #10-6 AWG conductors for flexible installation.
  • NEMA Configuration: Non-NEMA design type built for specialized industrial applications.
  • Color Options: Available in Black or Steel housing finishes across the family.
  • Voltage Options: Available in 125/250 volt and 250 volt ratings depending on the selected variant.
  • Standard: Manufactured to California standard requirements.

Technical Specifications

  • Number Of Poles: Two-pole
  • Wiring Method: Back
  • Allowable Wire Size: #10-6 AWG
  • Standard: California standard
  • Application: Industrial
  • Nema Configuration: Non-NEMA
  • Amperage Rating: 50A
  • Number Of Wires: Three-wire
  • Design Type: Single
  • Color: Black or Steel (select at checkout)
  • Voltage: 125/250 volts or 250 volts (select at checkout)

Typical Applications

  • Industrial Power Distribution Equipment
  • Heavy-Duty Machinery and Equipment Connections
  • Commercial and Industrial Electrical Installations
  • High-Amperage Locking Circuit Applications
  • Panelboard and Load Center Wiring Support

Why Cooper Wiring Devices?

Cooper Wiring Devices builds locking receptacles engineered for the rigors of industrial-grade use, with a two-pole, three-wire, 50A design that supports dependable back-wired connections and a defined #10-6 AWG wire range. Manufactured to California standard requirements and offered in Black or Steel housing colors with 125/250 volt or 250 volt ratings, this receptacle family delivers the consistent, code-aware performance professional electricians expect for demanding industrial power applications.

Manufacturer Resources

Product Specs

Number Of Poles:
Two-pole
Wiring Method:
Back
Allowable Wire Size:
#10-6 AWG
Standards:
California Standard
Application:
Industrial
Nema Configuration:
Non-NEMA
Amperage Rating:
50A
Number Of Wires:
Three-wire
Design Type:
Single
Product Type:
Locking Receptacle
Connection Type:
Back Wired
Department:
Electrical
Product Group:
Wiring Devices
Configuration:
Two-Pole Three-Wire
Product Subgroup:
Receptacles & Outlets

Cooper Wiring Devices COOPCS8275 – Frequently Asked Questions

1) What wire size can I land on the Cooper CS-6370 receptacle, and is it back wired?
Terminations are back wired and accept #10 through #6 AWG conductors. That covers the usual copper sizes for a 50A feeder, but it rules the device out if you are pulling something larger than #6 - you would need a junction and a reducing splice ahead of the receptacle, which most inspectors would rather you avoid.
2) What voltage and color choices do I pick from on the Cooper CS-6370 locking receptacle?
Two combinations are offered: Black at 125/250 volts (MPN CS6370) and Steel at 250 volts (MPN CS8275). The voltage is tied to the version you pick, so the Black device is the one to order for a 125/250V circuit and the Steel device for straight 250V. Both share the 50A two-pole three-wire platform.
3) What should I use instead of the Cooper CS-6370 if the circuit is 20A four-wire 277/480V?
The Cooper CS-6370 is a two-pole three-wire 50A device, so it does not suit a four-wire 277/480V circuit. The Leviton 2450 is an industrial grade four-wire, four-pole single locking receptacle rated 20A at 277/480V Y AC, which matches that pole count and voltage class.
4) Does the Cooper CS-6370 50A receptacle have a separate ground, or is it two-pole three-wire with the third as ground?
It is a two-pole, three-wire device: two current-carrying poles plus a third contact. Three-wire locking devices of this type do not include a separate equipment grounding contact beyond those three conductors, so confirm your cord cap matches the same two-pole three-wire CS pattern before you wire it in. If your installation needs four poles, a four-wire device such as the Leviton 2450 (277/480V Y, 20A) is a different configuration entirely.
5) Is the Cooper CS-6370 heavy enough for shop machinery, or is it a commercial-grade device?
It is built for industrial service - 50A, two-pole three-wire, back wired, for machine connections and power distribution equipment. If your load is lighter, a 20A industrial-grade locking receptacle like the Leviton 2420 or the Leviton 2410 (125/250V NEMA L14-20R) is the more sensible match than oversizing to a 50A CS device.
6) I need a flanged locking receptacle rather than a flush device like the Cooper CS-6370 - what is the alternative?
The Cooper CS-6370 is a single-design back-wired locking receptacle accepting #10-6 AWG conductors. If the opening calls for a flanged body, the Bryant 71020ER is a 7 Series flanged locking receptacle, which mounts to a surface box or enclosure face instead of a flush device plate.
7) For a light-duty 125V locking cord application, is there a simpler option than the Cooper CS-6370?
Yes. The Cooper CS-6370 is a 50A two-pole three-wire industrial device sized for heavy machinery and high-amperage circuits. For a small single-circuit locking connection, the Eaton 7540 is a NEMA L1-15 locking receptacle of commercial grade, a much smaller two-wire pattern suited to light cord-connected loads.
8) I need to replace one 50A CS locking outlet on a machine - is this sold as a single device?
Yes, it is a single-design device, one receptacle per unit, so a one-for-one swap on an existing CS-pattern 50A outlet is straightforward provided the conductors fall in the #10-6 AWG range and the existing cord cap is the same California-standard two-pole three-wire pattern.
9) Is the Cooper CS-6370 a flanged inlet or a flush receptacle for a box?
It is a locking receptacle device, not a flanged inlet. If your application calls for a flanged outlet mounted to equipment housing, look at a flanged locking receptacle such as the Bryant 71020ER from the 7 Series instead.
10) My plant wash-down area needs a chemical-resistant locking receptacle - how does that compare to the Cooper CS-6370?
The Cooper CS-6370 is an industrial-application locking receptacle rated 50A, two-pole three-wire, in Black or Steel housing. If impact and chemical exposure is the driving concern, the Leviton 2420 is an industrial grade flush mount locking receptacle described as impact- and chemical-resistant. Confirm the plug pattern and amperage on your equipment cord before swapping, since the two devices are not the same configuration.
How fast can I get the Cooper Wiring Devices COOPCS8275 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 COOPCS8275 come with a warranty?
Absolutely. The Cooper Wiring Devices COOPCS8275 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 COOPCS8275?
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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