Leviton Industrial Grade Locki...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$12.38
Leviton Industrial Grade Locking Plug, NEMA L6-20P, 20A 250V

Leviton Industrial Grade Locking Plug, NEMA L6-20P, 20A 250V

(No reviews yet) Write a Review

Model: 2321
$12.38

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

$12.38
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

Leviton Industrial Grade Locking Plug, NEMA L6-20P, 20A 250V

The Leviton Industrial Grade Locking Plug is a 3-wire, 2-pole, polarized locking-style plug engineered for professionals who need a dependable, heavy-duty electrical connection that stays secure under demanding conditions. Rated 250-volt, 1-phase, 20-amp with a NEMA L6-20P configuration, this plug is built to resist accidental disconnection in industrial and commercial environments where vibration, movement, or high-traffic cord handling would loosen a standard plug. Finished in black/white, Leviton's industrial-grade construction reflects the brand's long-standing reputation for reliable, code-compliant electrical devices used by electricians, facility managers, and OEMs across a wide range of applications.

Key Features

  • Locking Design: A twist-and-lock connection mechanism helps keep the plug securely mated to its corresponding connector, reducing the risk of accidental disconnects during use.
  • Industrial-Grade Construction: Built to Leviton's industrial-grade standard for durability in demanding commercial and industrial settings.
  • Electrical Rating: Rated 250-volt, 1-phase, 20-amp with a 3-wire, 2-pole, polarized NEMA L6-20P configuration for compatible locking-style connections.
  • Heavy-Duty Performance: Designed to withstand repeated plugging and unplugging cycles common in industrial equipment, machinery, and portable power applications.
  • Professional-Grade Reliability: Manufactured by Leviton, a trusted name in electrical wiring devices, for consistent performance on the job site.
  • Secure Cord Connection: Provides a stable termination point for power cords and cordsets in facilities where connection integrity is critical.
  • Versatile Application: Suitable for use across a variety of industrial and commercial electrical setups requiring a locking-style plug.

Technical Specifications

  • Amperage: 20A
  • Voltage: 250V
  • Poles: 2
  • NEMA Rating: L6-20P
  • Product Color: Black

Typical Applications

  • Commercial and Industrial Electrical Installations
  • Portable Power and Cordset Connections
  • Manufacturing and Facility Maintenance Equipment
  • Renovation and New Construction Wiring Projects
  • Job-Site and Temporary Power Setups

Why Leviton?

Leviton has built its reputation on delivering electrical wiring devices that professionals can depend on, and this Industrial Grade Locking Plug continues that standard with its secure locking design, 20-amp 250-volt NEMA L6-20P rating, and heavy-duty build. Choosing Leviton means choosing a brand trusted for consistent, reliable performance in the demanding electrical environments where a simple plug failure isn't an option. Shop ZenSupply for genuine Leviton industrial electrical devices backed by the quality professionals expect.

Manufacturer Resources

Product Specs

Product Type:
Locking Plug
Poles:
2
Grade:
Industrial
Product Color:
Black
Department:
Electrical
Product Group:
Wiring Devices
Product Subgroup:
Plugs & Connectors

Leviton 2321 – Frequently Asked Questions

1) What does a NEMA L6-20P plug fit, and will it mate with an L5-20 receptacle?
The Leviton 2321 locking plug is an L6-20P configuration, which is 2-pole 3-wire grounding rated 20A at 250V. It only mates with an L6-20R receptacle or connector body. It will not go into an L5-20 device, because L5-20 is a 125V configuration and the blade pattern is keyed differently. If the circuit at the machine is 120V, you need an L5-20P instead, not this plug.
2) Can I use this Leviton locking plug on a 277-volt lighting circuit?
No. The 2321 is rated 250V and its L6-20P face will not enter a 277V receptacle. For 277V, Leviton makes the L7 configuration: the 2331 plug is L7-20P at 20A 277V, and the 4770-C is L7-15P at 15A 277V. Pick by the amperage of the circuit and the receptacle already on the wall.
3) How many conductors do I land in this plug, and does it take a ground?
Three. The L6-20P is a 2-pole 3-wire grounding device, so you terminate two hot conductors off the 250V circuit plus the equipment grounding conductor. There is no neutral in this configuration, so a cord with a white neutral intended for a 125/250V setup is the wrong cord for it.
4) What should I use if the equipment needs 30 amps at 250 volts instead of 20?
Step up to the Eaton L6-30 locking plug, a two-pole three-wire nylon device in the L6-30 series. It keeps the same two-pole three-wire 250-volt architecture as the Leviton 2321 but in the L6-30 configuration, whose blade pattern is deliberately different so a 30-amp cordset cannot be mated into a 20-amp L6-20 receptacle. The Leviton 2321 is rated 20A at 250V with a NEMA L6-20P configuration and 2 poles, so it stays on 20-amp branch circuits.
5) Is the Eaton L6-30 plug a drop-in replacement for a Leviton 2321?
No. The Eaton L6-30 is a two-pole three-wire locking plug in the L6-30 configuration, while the Leviton 2321 is NEMA L6-20P. Same voltage family and same pole and wire count, but the L6-30 blade pattern will not enter an L6-20R receptacle. Match the existing receptacle configuration, not just the voltage. The Eaton is also described as commercial grade where the Leviton 2321 is industrial grade.
6) Is a locking plug worth it over a straight-blade plug for machinery on a cord?
On equipment that vibrates, gets dragged, or has cord tugged across a floor, yes. The twist-and-lock connection on this Leviton industrial grade plug keeps the plug mated to its connector so it does not shake loose the way a straight-blade cap does. Straight blade is fine for a fixed bench outlet; a locking device is what you want on portable power, cordsets, and production equipment that gets cycled repeatedly.
7) I need a 30-amp version of this for a bigger machine. What do I order?
The 2321 tops out at 20A, so on a 30A branch circuit you move to the L6-30 configuration. Eaton's L6-30 locking plug is a two-pole three-wire nylon device in that configuration. Do not put a 20A plug on a 30A cordset; match the plug amperage to the circuit and the cord.
8) What other locking plugs should I look at if this Leviton is not the right configuration?
Depends on the circuit. For 125V 15A work, Bryant's 4722N is an angle L5-15P. For 20A on a 120/208V system, Eaton's 7411-C Safety Grip is a heavy-duty specification grade plug. At the top end, Eaton's 7765 armored locking plug handles 50A 600V with back-wiring. The Leviton 2321 sits in the middle of that range at 20A 250V.
9) What part number do I give my distributor for the 20A 250V version?
Leviton 2321. That is the L6-20P at 20A 250V. The neighboring numbers in the same family are 2331 for L7-20P at 277V and 4770-C for L7-15P at 277V, so call out the number, not just "the locking plug," when you order.
10) We run 120-volt cords on the same carts. What locking plug covers that end?
The Bryant 4722N is an angle locking plug in the NEMA L5-15P configuration, rated 15A 125V. That is the 125-volt side of the shop, where the Leviton 2321 handles 250-volt 20-amp loads on an L6-20P configuration. The Bryant body is angled rather than straight, which helps where a cord has to leave the receptacle close to a wall or panel.
11) What is the difference between the Leviton 2321 and the Eaton 7411-C Safety Grip plug?
The Eaton 7411-C is a 20A Safety Grip locking plug rated 120/208V and built to a heavy-duty specification grade, so it is aimed at three-phase wye 120/208 systems. The Leviton 2321 is a single-phase 250-volt 20-amp device with an L6-20P configuration and two poles. Both are 20-amp locking plugs, but they terminate different systems and are not interchangeable on the same cordset.
12) For a 50-amp 600-volt feed on a large machine, what takes the place of this plug?
Nothing in the L6-20 family will serve that load. The Eaton 7765 is an industrial armored locking plug rated 50A at 600V and 250Vdc with back-wiring terminations, built to an extra heavy duty grade. The Leviton 2321 tops out at 20A 250V on an L6-20P configuration, so the 7765 is the device to spec when the machine nameplate calls for 50 amps or 600 volts.
13) If I am wiring 277-volt lighting rather than 250-volt equipment, do I still order the 2321?
No. The 2321 is the 250-volt L6-20P device. For 277-volt work, order the Leviton 2331, a 20A 277V plug in the L7-20P configuration, or the 4770-C at 15A 277V in L7-15P. L6 and L7 blade patterns are keyed differently so a 277-volt cord cannot be plugged into a 250-volt receptacle.
14) Is the Leviton 2321 industrial grade or just commercial grade?
Industrial grade. That is Leviton's heavy-duty tier for wiring devices, above commercial, and it is the level facilities specify for equipment that gets plugged and unplugged constantly. By comparison, the Eaton L6-30 locking plug is listed as commercial grade and the Eaton 7765 armored plug as extra heavy duty.
15) Is there a non-metallic locking plug option if I want a lighter body than an industrial metal-housed device?
The Bryant 71020NP is a 7 Series non-metallic locking plug, so its housing is a molded body rather than a metal shell. The Leviton 2321 is an industrial grade plug in black. If your concern is weight or avoiding a conductive housing on a portable cordset, the non-metallic Bryant body addresses that; confirm the configuration matches the receptacle you are landing on before ordering either.
16) What color is the Leviton 2321 plug body?
Black. The body is finished black with white, which is how Leviton marks its industrial locking line, so it will match the other L6 devices already on your cordsets rather than standing out.
How fast can I get the Leviton 2321 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 2321 come with a warranty?
Absolutely. The Leviton 2321 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 2321?
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 Leviton 2321 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!