Pass & Seymour L2120C 20A NEMA...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$218.40
$188.46
Pass & Seymour L2120C 20A NEMA L2120 Connector, Black/White Nylon 6 Body

Pass & Seymour L2120C 20A NEMA L2120 Connector, Black/White Nylon 6 Body

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Model: L2120-C

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

$218.40
$188.46
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Pass & Seymour L2120C 20A NEMA L2120 Connector, Black/White Nylon 6 Body

The Pass & Seymour L2120C is a 20A NEMA L2120 configuration connector featuring a black back and white front nylon 6 body engineered for durable, code-compliant cord-and-plug connections. Built with industrial-strength brass alloy contacts and a sealed cord-grip design, this cULus Listed connector is suited for demanding industrial and commercial power applications where reliable conductivity and cord retention are critical.

Key Features

  • NEMA Configuration & Rating: Stamped L2120 configuration and 20A device rating are clearly visible on the connector body for fast field identification.
  • Durable Construction: Impact- and corrosion-resistant nylon 6 shell material with a black back and white front body stands up to jobsite conditions.
  • Cord Sealing & Protection: Integral flexible rubber cord grommet conforms to and seals around SO cord, protecting the wiring chamber from oils, water, or chips.
  • Secure Cord Retention: Double dovetail design combined with new-design external cord grips provides superior protection against cord pull-out forces and visible assurance of safe, proper retention.
  • High-Conductivity Contacts: Industrial-strength brass alloy plug blades and connector contacts resist heat rise and deliver excellent conductivity.
  • Non-Slip Grip Design: Raised ribs and a scallop shell design provide a secure gripping profile for turning to lock and unlock, and for insertion and withdrawal.
  • Jobsite-Ready Contour: Rounded back contour reduces snags and hang-ups during handling on the job site.
  • Ready-to-Wire: Quick-thread assembly screws and cord-grip screws come backed-out, ready-to-wire for faster installation.

Certifications & Compliance

  • cULus Listed

Technical Specifications

  • Country Of Origin: Mexico
  • Product Length: 3.33 in
  • Product Line: Pass & Seymour
  • Product Width: 2.2 in

Typical Applications

  • Industrial and Commercial Power Connections
  • Portable Cord-and-Plug Sets
  • Temporary Power Distribution
  • Motor and Equipment Hookups
  • Jobsite and Facility Maintenance Wiring

Why Pass & Seymour?

Pass & Seymour builds the L2120C with a durable nylon 6 shell, brass alloy contacts, and a sealed, cULus Listed design to deliver dependable performance in demanding cord-and-plug applications. The double dovetail retention system and ready-to-wire assembly screws reflect a focus on secure, code-compliant connections for professional electrical work.

Manufacturer Resources

Spec Sheet

Product Specs

Product Type:
Locking Connector
Product Material:
Nylon 6
Amperage Rating:
20A
Configuration:
L2120
Listing:
cULus
Department:
Electrical
Product Group:
Wiring Devices
Product Subgroup:
Plugs & Connectors
Product Width:
2.2 in
Product Length:
3.33 in
Product Color:
Black

Pass & Seymour L2120-C – Frequently Asked Questions

1) What plug or receptacle does the Pass & Seymour L2120C connector mate with?
The L2120C is the female cord connector half of the NEMA L21-20 locking configuration, so it mates with an L21-20 plug (the male cord end) or an L21-20 inlet on equipment. NEMA L21-20 is a 4-pole, 5-wire 3-phase 120/208V twist-lock pattern, so it will not accept any straight-blade or any other locking configuration. The configuration and the 20A rating are stamped on the body for field identification.
2) Can I use the L2120C twist-lock connector on a single-phase 120V cord set?
No. The L21-20 pattern is a 3-phase, 5-wire device (three hots, neutral, ground), so a two-wire or three-wire 120V cord has nothing to land on several of its terminals. For single-phase 120V cord ends you want a straight-blade or L5 series connector instead, such as the Leviton industrial grade 125V 20A straight blade connector or the Eaton Arrow Hart severe duty 15A 125V NEMA 5-15R connector.
3) Is the L2120C connector hospital grade?
No. The L2120C is an industrial/commercial twist-lock connector with brass alloy contacts and a cULus listing, not a hospital grade device. If your spec calls for hospital grade, you need a green-dot device such as the Bryant 8269T NEMA 5-15R connector or the Leviton 8319-C NEMA 5-20R connector, both hospital grade, though both are straight-blade 125V patterns rather than L21-20.
4) What should I use instead of the L2120C for a standard 5-20 receptacle cord end?
The Pass & Seymour L2120C mates only with NEMA L2120 locking devices. For a straight blade 5-20 cord end, the Leviton 8319-C is a NEMA 5-20R connector in black, supplied as a pack of 100. That covers the common 20A straight blade opening the L2120C cannot serve.
5) Will this Pass & Seymour connector hold up on portable cord used outdoors or around oil and coolant?
It is built for that. The shell is nylon 6, chosen for impact and corrosion resistance, and an integral flexible rubber grommet conforms around SO cord to seal the wiring chamber against oils, water and chips. External cord grips plus a double dovetail body resist pull-out on portable cord sets and temporary power runs. It is cULus Listed.
6) How big is the Pass & Seymour L2120C connector body, and does it need tools or extra parts to wire?
The body measures 3.33 in long by 2.2 in wide, so it fits in a hand and in a typical cord reel or panel pocket. Assembly screws and cord-grip screws arrive backed out, ready to wire, so no disassembly step before terminating. Raised ribs and a scallop shell profile give you grip for turning to lock and unlock. Nothing else ships with it; you supply the cord and the mating L21-20 plug.
7) Is a twist-lock connector like this better than a straight blade for temporary jobsite power?
For anything that gets dragged, vibrates, or feeds a motor, the locking pattern is the reason to choose it: you turn to lock and the connection will not pull apart under cord tension, and the external cord grips add pull-out resistance at the cord entry. Straight-blade connectors such as the Leviton industrial grade 125V 20A or the Eaton Arrow Hart severe duty 5-15R are simpler and fine for general 120V tool and appliance cords, but they rely on blade friction alone to stay connected.
8) How does the L2120C compare with industrial grade straight blade connectors for cord retention?
The Pass & Seymour L2120C uses a double dovetail design with external cord grips and an integral flexible rubber grommet that seals around SO cord, plus the mechanical twist-lock of the NEMA L2120 configuration itself. The Leviton 15W33 is an industrial grade 3-wire 2-pole 125V 20A straight blade connector, which relies on blade friction rather than a locking interface to stay engaged.
9) What is the Pass & Seymour part number and body color for the L21-20 20A connector?
Order it as Pass & Seymour L2120-C. The nylon 6 shell has a black back and a white front, and it is made in Mexico. The L21-20 configuration and 20A rating are stamped on the shell, which helps when you are sorting a bin of locking devices on site.
10) I need 100 connectors to standardize a facility. Is the L2120C sold that way?
The Pass & Seymour L2120C is ordered as a single L2120 connector, model L2120C. If bulk packaging is what drives the order and a straight blade 5-20 configuration works for your equipment, the Leviton 8319-C hospital grade NEMA 5-20R connector is supplied in a pack of 100. Confirm the configuration your equipment cords require before standardizing, since L2120 and 5-20 do not mate.
How fast can I get the Pass & Seymour L2120-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 Pass & Seymour L2120-C come with a warranty?
Absolutely. The Pass & Seymour L2120-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 Pass & Seymour L2120-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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