Cooper Wiring Devices CS-6375 ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$73.51
Cooper Wiring Devices CS-6375 50A Three-Pole Locking Flanged Inlet, Nylon

Cooper Wiring Devices CS-6375 50A Three-Pole Locking Flanged Inlet, Nylon

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Model: COOPCS8375

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

$73.51
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Cooper Wiring Devices CS-6375 50A Three-Pole Locking Flanged Inlet, Nylon

The Cooper Wiring Devices CS-6375 Locking Flanged Inlet is a 50A, three-pole, four-wire device built in durable nylon for demanding industrial power connections. This locking inlet is offered across a voltage family ranging from 125/250 volts up to 250 volts, letting you select the configuration that matches your equipment or generator feed while keeping the same rugged nylon housing, three-pole four-wire design, and California standard, Non-NEMA configuration across every voltage option. It accepts #10-6 AWG conductors and is designed for industrial applications where a secure, twist-locking flange-mount inlet is required for equipment or generator power feeds.

Key Features

  • Amperage Rating: Rated 50A for demanding industrial power connections.
  • Voltage Options: Available in 125/250 volts and 250 volts configurations to match your specific power feed requirements.
  • Durable Construction: Molded nylon housing for impact resistance and long service life in industrial environments.
  • Pole/Wire Configuration: Three-pole, four-wire design supports dedicated grounding for safe power transfer.
  • Allowable Wire Size: Accepts #10-6 AWG conductors for flexible termination.
  • Configuration: Non-NEMA, California standard configuration for specialized industrial connection requirements.
  • Application: Engineered for industrial application use.
  • Housing Color: Steel-colored housing.

Technical Specifications

  • Material: Nylon
  • Number Of Poles: Three-pole
  • Number Of Wires: Four-wire
  • Allowable Wire Size: #10-6 AWG
  • Standard: California standard
  • Application: Industrial
  • Amperage Rating: 50A
  • Voltage: 125/250 volts and 250 volts options available
  • Nema Configuration: Non-NEMA
  • Color: Steel

Typical Applications

  • Industrial Power Distribution
  • Locking Inlet Connections for Portable or Standby Power
  • Heavy-Duty Equipment and Machinery Power Feeds
  • Generator and Temporary Power Setups
  • Renovation and New Industrial Construction

Why Cooper Wiring Devices?

Cooper Wiring Devices builds the CS-6375 locking flanged inlet with a durable nylon housing and a three-pole, four-wire configuration rated for 50A industrial power connections, available across a 125/250 volt to 250 volt family to fit varied power requirements. With support for #10-6 AWG conductors and a California standard, Non-NEMA configuration, it delivers a reliable, code-appropriate connection point for demanding industrial electrical work.

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Manufacturer Resources

Product Specs

Number Of Poles:
Three-pole
Allowable Wire Size:
#10-6 AWG
Standards:
California Standard
Application:
Industrial
Amperage Rating:
50A
Nema Configuration:
Non-NEMA
Number Of Wires:
Four-wire
Product Type:
Locking Flanged Inlet
Product Material:
Nylon
Product Color:
Steel
Department:
Electrical
Product Group:
Wiring Devices
Configuration:
Three-Pole Four-Wire
Voltage Rating:
125/250V - 250V
Product Subgroup:
Plugs & Connectors

Cooper Wiring Devices COOPCS8375 – Frequently Asked Questions

1) What is the difference between the Cooper CS6375 and CS8375 locking flanged inlets?
Voltage. The CS6375 is the 125/250 volt version and the CS8375 is the 250 volt version. Everything else matches: 50A, three-pole, four-wire, California standard, nylon housing. Pick the one that matches the system your generator or equipment feed actually runs on, because the two are not interchangeable in the field.
2) Is a flanged inlet the right choice, or should I use a receptacle for my generator feed?
Use a flanged inlet when power flows INTO the equipment or building through a cord from a portable generator or shore supply. The Cooper CS6375 mounts through a flange on the enclosure or wall with male pins on the outside, so the cord's female connector plugs onto it and no energized pins are exposed on the cord end. If you are feeding power out to a portable load instead, you want a receptacle, not an inlet.
3) Will a standard NEMA locking inlet work in place of the Cooper CS6375?
No. The Cooper 50A inlet is a Non-NEMA device built to the California standard configuration, so a NEMA-configured twist-lock inlet of the same amperage will not mate with a California standard plug or cord set. The substitute to look for is another California standard 50A device such as the Eaton Arrow Hart CS6377. Match the pole and wire count as well - the Cooper is three-pole, four-wire.
4) What is the closest equivalent to the Cooper CS6375 California standard 50A locking flanged inlet?
The Eaton Arrow Hart CS6377 is the nearest match: it is also a California standard locking flanged inlet rated 50A, and it is built to an Extra Heavy Duty grade. The Cooper unit is a 50A three-pole, four-wire California standard device in nylon, offered in 250 volt and 125/250 volt versions, so confirm which voltage your equipment feed requires before cross-referencing.
5) What wire size can I land in this 50A California standard inlet?
Terminations accept #10 through #6 AWG conductors. For a full 50A feed you are typically pulling #6, which is at the top of the range, so plan your conduit and strip length around #6 rather than assuming the smaller end.
6) Does the three-pole, four-wire configuration give me a separate ground?
Yes. Three poles carry the current-carrying conductors and the fourth wire is the equipment grounding conductor, so the ground is dedicated and not shared with a current-carrying leg. That is what you want on a 50A generator or machine feed.
7) Can I replace an existing Cooper CS6375 inlet with an Eaton unit?
The Eaton Arrow Hart CS6377 is the closest cross-brand match we carry: a 50A California standard locking flanged inlet in an Extra Heavy Duty grade. Confirm the voltage configuration of what is in the wall first, since CS6375 is 125/250V and CS8375 is 250V, and the CS number itself defines the blade pattern.
8) I need a 50A inlet for a heavy industrial wash-down or high-abuse location - is there a tougher option than the nylon Cooper inlet?
For the roughest service, the Eaton Arrow Hart CS6377 California standard 50A locking flanged inlet is rated Extra Heavy Duty. The Cooper 50A inlet uses a molded nylon housing chosen for impact resistance, which suits most industrial power distribution and generator feed work; where the specification calls out an extra heavy duty device by grade, the Eaton part carries that designation.
How fast can I get the Cooper Wiring Devices COOPCS8375 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 COOPCS8375 come with a warranty?
Absolutely. The Cooper Wiring Devices COOPCS8375 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 COOPCS8375?
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
Why buy the Cooper Wiring Devices COOPCS8375 from ZenSupply?
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