Eaton L14-20 Industrial Lockin...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$56.54
Eaton L14-20 Industrial Locking Receptacle, Black, Nylon

Eaton L14-20 Industrial Locking Receptacle, Black, Nylon

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Model: L1420-R

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

$56.54
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Eaton L14-20 Industrial Locking Receptacle, Black, Nylon

The Eaton L14-20 Industrial Locking Receptacle is a rugged, three-pole, four-wire severe-duty locking device rated 20A at 125/250V for demanding industrial power connections. Built with a nylon face and body, brass contacts, and a back-wiring terminal design that accepts #18-10 AWG conductors, this single receptacle is configured for NEMA L14-20 applications. Rated for a -40 to 70 °C (-40 to 158 °F) operating range and finished in black, it delivers dependable, code-compliant performance for industrial power distribution.

Key Features

  • NEMA Configuration: L14-20 severe-duty locking receptacle for secure, twist-lock industrial connections.
  • Electrical Rating: 20A at 125/250V for three-pole, four-wire industrial power circuits.
  • Durable Construction: Nylon face and body resist impact and wear in industrial environments.
  • Contact Material: Brass contacts provide reliable, long-lasting conductivity.
  • Back Wiring: Accepts #18-10 AWG conductors for a secure, back-wired termination.
  • Operating Temperature: Rated from -40 to 70 °C (-40 to 158 °F) for wide-ranging environmental conditions.
  • Device Grade: Commercial-grade construction built for industrial application demands.
  • Finish: Black nylon housing for durability and easy identification.

Technical Specifications

  • Number of wires: 4
  • Number Of Poles: Three-pole
  • Voltage rating: 125/250 V
  • Amperage Rating: 20 A
  • Device grade: Commercial
  • Color: Black
  • NEMA configuration: L14-20
  • Special features: Severe duty locking plug
  • Wiring method: Back
  • Application: Industrial
  • Operating temperature: -40 to 70 °C (-40 to 158 °F)
  • Face/body material: Nylon
  • Type: Locking receptacle
  • Material: Nylon
  • Design type: Single receptacle
  • Receptacle type: Single
  • Contact material: Brass

Typical Applications

  • Industrial Power Distribution
  • Severe-Duty Locking Plug and Receptacle Systems
  • Heavy Machinery and Equipment Wiring
  • Commercial and Industrial Electrical Installations
  • Panel and Junction Box Wiring Requiring Locking Connections

Why Eaton?

Eaton locking receptacles are engineered with durable nylon construction and brass contacts to withstand the rigors of industrial use. This L14-20 locking receptacle delivers dependable, code-compliant performance for demanding electrical environments where secure, vibration-resistant connections are essential.

Manufacturer Resources

Product Specs

Number Of Poles:
Three-pole
Voltage Rating:
125/250V
Amperage Rating:
20A
Device Grade:
Commercial
Product Color:
Black
Nema Configuration:
L14-20
Special Features:
Severe duty locking plug
Wiring Method:
Back
Application:
Industrial
Operating Temperature:
-40 to 70 °C (-40 to 158 °F)
Face/body material:
Nylon
Product Type:
Locking Receptacle
Product Material:
Nylon
Design Type:
Single receptacle
Receptacle Type:
Single
Number Of Wires:
4
Contact Material:
Brass
Department:
Electrical
Configuration:
L14-20
Grade:
Commercial
Product Group:
Wiring Devices
Product Subgroup:
Receptacles & Outlets

Eaton L1420-R – Frequently Asked Questions

1) What wire size can I land on the Eaton L1420-R locking receptacle?
Terminals accept #18 through #10 AWG conductors and are back-wired rather than side-wired, so the conductors go straight into the body behind the terminal screws. For a 20A circuit that means #12 copper lands comfortably within range.
2) My equipment nameplate calls for 277/480V three-phase - can I use the Eaton L1420-R?
No. The Eaton L1420-R is rated 125/250V as a three-pole, four-wire device, which is a single-phase 120/240V service connection. For a 277/480V Y three-phase circuit, the Leviton 2450 is the device to specify: it is a 4-wire, 4-pole single locking receptacle rated 277/480V Y AC at 20A. Matching the NEMA configuration to the nameplate voltage is what keeps the connection code-compliant.
3) Can this locking receptacle be mounted outdoors or in an unheated building?
The operating range is -40 to 70 C (-40 to 158 F), so cold storage, unheated shops and exterior equipment yards are within spec. The body and face are nylon, which holds up to impact and wear. It is a device only, not a weatherproof assembly, so an outdoor install still needs a suitable enclosure and an in-use cover.
4) Is the Eaton L1420-R an industrial grade or commercial grade device?
It is listed as commercial grade construction, built for industrial application use. If your spec sheet calls out industrial grade specifically, the Leviton 2410 is an industrial grade flush mount L14-20R at the same 20A 125/250V rating.
5) What is the difference between an L14-20 and an L15-20 or L16-20 receptacle for my machine?
L14-20 is three-pole, four-wire at 125/250V, meaning two hots plus a neutral, which is what you need when the load draws both 240V and 120V. Three-phase or no-neutral configurations are a different device entirely. For a four-pole four-wire 277/480V Y circuit, the Leviton 2450 is the 20A locking receptacle to look at instead.
6) Does the Eaton L1420-R come with a plug or a cover plate?
It is a single receptacle device on its own. The mating L14-20 plug, the box or enclosure, and any cover or flange plate are separate items. If you need a flanged inlet style rather than a flush device, the Bryant 71020ER is a flanged locking receptacle.
7) What is the difference between the Eaton L1420-R and the Leviton 2510 locking receptacle?
Both are flush mount style locking receptacles, but they are not the same device. The Leviton 2510 is an industrial grade locking receptacle, while the Eaton L1420-R is a commercial grade single receptacle built specifically to the NEMA L14-20 pattern - three-pole, four-wire, 20A at 125/250V. Because twist-lock devices only mate with their own configuration, match the receptacle to the plug on the equipment cord rather than treating these two as interchangeable.
8) I need a locking receptacle mounted on a flange outside a box rather than flush in one - what should I order instead of the Eaton L1420-R?
Look at the Bryant 71020ER, a 7 Series flanged locking receptacle. A flanged receptacle mounts to a surface or enclosure wall with its own flange, which suits machine housings and generator panels where there is no standard flush box. The Eaton L1420-R is a single receptacle configured for NEMA L14-20 with back wiring accepting #18-10 AWG conductors, intended for panel and junction box wiring. Confirm the Bryant configuration matches the L14-20 pattern your plug uses before ordering.
9) For a washdown or chemical exposure area, is there a tougher locking receptacle than the Eaton L1420-R?
The Leviton 2420 is an industrial grade flush mount locking receptacle described as impact- and chemical-resistant, which is the property to weigh where solvents or cleaning agents contact the device face. The Eaton L1420-R is a severe duty locking device with a nylon face and body and brass contacts, rated for a -40 to 70 C (-40 to 158 F) operating range, so it handles wide temperature swings and mechanical abuse in industrial power distribution. Verify the Leviton 2420 NEMA configuration matches L14-20 for your plug.
10) Will this twist-lock receptacle stay connected on vibrating equipment?
Yes. The twist-lock design mechanically locks the plug blades in place, which is why it is used on heavy machinery, pumps and compressors where a straight-blade cord would shake loose. Eaton lists it as a severe duty locking device with brass contacts for a low-resistance connection over time.
11) What part number do I order for the black Eaton L14-20 locking receptacle?
Order Eaton MPN L1420-R. It ships in black nylon, which is the only color offered for this device.
How fast can I get the Eaton L1420-R 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 Eaton L1420-R come with a warranty?
Absolutely. The Eaton L1420-R 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 Eaton L1420-R?
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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