Leviton 3765-C Polarized Locki...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$19.18
Leviton 3765-C Polarized Locking Plug, 4-Wire 3-Pole, Non-NEMA Industrial Grade

Leviton 3765-C Polarized Locking Plug, 4-Wire 3-Pole, Non-NEMA Industrial Grade

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Model: LEV-9965-C

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

$19.18
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Leviton 3765-C Polarized Locking Plug, 4-Wire 3-Pole, Non-NEMA Industrial Grade

The Leviton 3765-C is a 4-Wire 3-Pole polarized, non-NEMA industrial grade locking plug engineered for demanding power connections. Rated 250-Volt AC/DC and 600-Volt AC at 50-Amp, this plug is finished in Black & White for easy polarity identification. Built to industrial grade standards, it delivers dependable performance for heavy-duty electrical applications where a secure, locking connection is required.

Key Features

  • Configuration: 4-Wire, 3-Pole design for balanced, reliable power transfer.
  • Locking Design: Non-NEMA polarized locking plug prevents accidental disconnection in industrial settings.
  • Industrial Grade: Constructed to industrial grade standards for durability under heavy-duty use.
  • Voltage Rating: Rated 250-Volt AC/DC and 600-Volt AC for versatile power system compatibility.
  • Current Rating: 50-Amp rating supports high-current industrial loads.
  • Finish: Black & White housing for clear visual polarity reference.

Technical Specifications

  • Poles: 3

Typical Applications

  • Industrial and Commercial Power Distribution
  • Heavy-Duty Equipment Connections
  • Locking Plug and Connector Systems
  • Non-NEMA Industrial Power Applications
  • High-Amperage Machinery Wiring

Why Leviton?

Leviton's industrial grade locking plugs are built for durability and secure, polarized connections in demanding power environments. The 3765-C's robust construction and locking design make it a dependable choice for professionals who need reliable performance in industrial and commercial power systems.

Manufacturer Resources

Product Specs

Poles:
3
Grade:
Industrial
Product Type:
Locking Plug
Listing:
Industrial Grade
Department:
Electrical
Product Group:
Wiring Devices
Product Subgroup:
Plugs & Connectors

Leviton LEV-9965-C – Frequently Asked Questions

1) Will the Leviton 3765-C locking plug mate with a standard NEMA twist-lock receptacle like an L6-30 or L5-15?
No. The 3765-C is a non-NEMA locking plug, so its blade pattern will not mate with NEMA twist-lock devices. If you need a NEMA configuration, look at a NEMA-pattern plug instead, such as the Eaton L6-30 two-pole three-wire locking plug or the Bryant 4722N NEMA L5-15P angle plug. The 3765-C only pairs with the matching non-NEMA Leviton connector and receptacle of the same 4-wire 3-pole configuration.
2) What is the closest equivalent to the Leviton 3765-C locking plug at the same 50-amp rating?
The Eaton Industrial Armored Locking Plug, part 7765, is the nearest match on ratings: it is a 50A 600V/250Vdc locking plug of extra heavy duty construction with back-wiring terminals. The Leviton 3765-C is a 4-wire 3-pole polarized non-NEMA industrial grade plug rated 250V AC/DC and 600V AC at 50A. Both cover the same voltage and current class for heavy machinery connections; the Eaton adds an armored body and is specified for back-wiring.
3) If my equipment uses a standard NEMA locking configuration, is the Leviton 3765-C the wrong plug?
Yes. The 3765-C is a non-NEMA polarized locking plug, so it will not mate with NEMA-configured receptacles. For NEMA openings, choose by configuration: the Eaton L530P is an L6-30 two-pole three-wire nylon plug, the Pass & Seymour Turnlok L720P is a NEMA L8 three-wire 30A 480V plug with a black/white body, and the Bryant 4722N is an angle plug in NEMA L5-15P at 15A 125V.
4) What is the difference between the Leviton 3765-C and the 9965-C?
Both are Leviton 4-wire 3-pole industrial grade locking plugs, and the difference is the voltage rating on the device you order: the 3765-C is the 250V version and the 9965-C is the 20V version. Match the part number to the system voltage on your equipment, since the two are ordered as separate MPNs.
5) Is the 3765-C plug rated for industrial use or is it a commercial grade device?
Industrial grade. Leviton builds the 3765-C to industrial grade standards for heavy-duty use in plants and shops, not to a commercial or residential spec. If you are comparing grades, the Eaton 7765 armored locking plug is catalogued as extra heavy duty and the Eaton 7411-C as heavy-duty specification grade, while the Eaton L6-30 nylon plug is a commercial grade device.
6) What does 4-wire 3-pole mean on this Leviton locking plug, and can I use it on a three-phase circuit?
Three poles carry current and the fourth wire is the additional conductor, so you land three current-carrying conductors plus the fourth. That configuration suits three-phase or multi-conductor power distribution to heavy equipment. The plug is polarized, so the conductors have a defined position and you cannot reverse them at the connection.
7) I only need a 20-amp locking plug for a 120/208V circuit, not 50 amps. What should I order instead of the Leviton 3765-C?
Step down to the Eaton 7411-C Safety Grip locking plug, rated 20A at 120/208V and built to heavy-duty specification grade. The Leviton 3765-C is a 50A plug rated 250V AC/DC and 600V AC, which is sized for high-current machinery rather than a 20A branch circuit.
8) For a wet or dusty location, is there a better locking plug than the Leviton 3765-C?
For exposure to dust and washdown, the Pass & Seymour 267 Series rubber dust-tight locking plug in yellow is the one built for that duty, with a rubber body and dust-tight construction plus high-visibility color. The Leviton 3765-C is an industrial grade polarized locking plug in a black and white housing for polarity identification, intended for industrial and commercial power distribution and heavy-duty equipment connections.
9) Is a commercial grade locking plug acceptable where the Leviton 3765-C is specified?
The 3765-C carries an industrial grade rating, built for durability under heavy-duty use. Among comparable plugs, the Eaton L530P is a commercial grade device, the Eaton 7411-C is heavy-duty specification grade, and the Eaton 7765 is extra heavy duty. If your spec calls out industrial grade, match it to an industrial or heavier device rather than a commercial one.
10) The Pass & Seymour L720P also has a black and white body - can I use it in place of the Leviton 3765-C?
No. The black and white coloring is only a visual polarity cue on both devices. The P&S Turnlok L720P is a NEMA L8 three-wire plug rated 30A 480V, while the 3765-C is a non-NEMA 4-wire 3-pole plug rated 250V AC/DC and 600V AC at 50A. Different configuration, different wire count, different current rating, so they will not interchange at the receptacle.
11) Why is the 3765-C black and white, and does the color mean anything?
The black and white housing is a polarity reference, not a cosmetic choice. On a polarized device it lets an electrician identify orientation at a glance before mating the plug. Pass & Seymour's Turnlok L8 plug uses a black and white body for the same reason.
12) Will a locking plug keep equipment from unplugging itself from vibration?
That is the point of the locking design on the 3765-C. The plug twists into its mating device and stays engaged, which prevents accidental disconnection on machinery and portable equipment that vibrates or gets pulled on. A straight-blade plug in the same location will work loose.
13) How does the Leviton 3765-C differ from a non-metallic locking plug like the Bryant 71020NP?
The Bryant 71020NP is a 7 Series non-metallic locking plug, so its body is a non-conductive housing. The Leviton 3765-C is an industrial grade 4-wire 3-pole polarized non-NEMA locking plug finished in black and white for polarity reference and rated 250V AC/DC and 600V AC at 50A. Pick by the configuration and rating your equipment cord requires.
How fast can I get the Leviton LEV-9965-C 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 Leviton LEV-9965-C come with a warranty?
Absolutely. The Leviton LEV-9965-C 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 Leviton LEV-9965-C?
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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