Cooper Wiring Devices L520P Se...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$30.99
Cooper Wiring Devices L520P Severe Duty Watertight Locking Connector

Cooper Wiring Devices L520P Severe Duty Watertight Locking Connector

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Model: L520-P

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

$30.99
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Cooper Wiring Devices L520P Severe Duty Watertight Locking Connector

The Cooper Wiring Devices L520P Severe Duty Watertight Locking Connector family is engineered for demanding industrial environments where reliable, secure cord connections are critical. This connector platform is available in 2, 3, and 4-pole configurations covering 120/208 volts, 125 volts, and 250 volts, letting facility and maintenance teams match the exact configuration to the application. Built with steel contacts and a watertight, IP67-rated housing, every option in this family delivers dependable performance in wet or harsh job-site conditions. The Ultra Grip design accommodates cord diameters from 0.43 to 1.15 in, making it a versatile choice across a wide range of industrial cordset applications.

Key Features

  • Durable Construction: Steel contacts provide strong, long-lasting conductivity for demanding industrial duty cycles across every pole/voltage configuration.
  • Wiring Method: Back-wired terminals simplify field termination and speed up installation on any option in the family.
  • Configurable Poles & Voltage: Choose from 2, 3, or 4-pole configurations at 120/208 volts, 125 volts, or 250 volts to match the exact circuit requirement.
  • Application: Purpose-built for industrial applications requiring a rugged, severe-duty locking connector.
  • Environmental Resistance: Watertight design keeps connections protected from moisture and washdown exposure.
  • Cord Diameter Range: Accepts cord diameters from 0.43 to 1.15 in, covering a wide range of cordset sizes across the family.
  • Ultra Grip Design: Reinforced grip design secures the cord and reduces strain on the connection point.
  • Degree of Protection: Rated IP67 for protection against dust ingress and temporary immersion in water.

Certifications & Compliance

  • IP67 Rated
  • Watertight Design

Technical Specifications

  • Contact Material: Steel
  • Wiring Method: Back
  • Application: Industrial
  • Environmental Resistance: Watertight
  • Cord Diameter: 0.43 to 1.15 in
  • Design Type: Ultra grip
  • Degree of Protection: IP67
  • Number of Poles Available: 2, 3, 4
  • Voltage Options: 120/208 volts, 125 volts, 250 volts
  • Connection Type: Back Wiring
  • Number of Wires: 5
  • Product Width: 4.25 inches
  • Product Height: 3.75 inches
  • Product Weight: .66 pounds

Typical Applications

  • Industrial Cordset and Cable Connections
  • Outdoor and Wet-Location Installations
  • Heavy Equipment and Machinery Wiring
  • Washdown and Harsh Environment Facilities
  • Severe Duty Industrial Power Connections

Why Cooper Wiring Devices?

Cooper Wiring Devices builds this severe duty locking connector family with steel contacts and a watertight, IP67-rated housing to withstand tough industrial conditions across every 2, 3, and 4-pole, 120/208 volt, 125 volt, and 250 volt configuration. The Ultra Grip design and back-wiring method help ensure a secure, code-compliant connection that installers and facility teams can rely on for demanding cordset applications.

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Manufacturer Resources

Product Specs

Contact Material:
Steel
Wiring Method:
Back
Application:
Industrial
Special Features:
#REF!
Environmental Resistance:
Watertight
Cord Diameter:
0.43 to 1.15 in
Design Type:
Ultra grip
Degree of Protection:
IP67
Product Type:
Locking Connector
Connection Type:
Back Wiring
Product Material:
Steel
Department:
Electrical
Product Group:
Wiring Devices
Product Width:
4.25 inches
Product Height:
3.75 inches
Product Weight:
.66 pounds
Number of Wires:
5
Voltage Rating:
125V - 250V
Configuration:
2-4 Pole
Standards:
IP67
Product Subgroup:
Plugs & Connectors

Cooper Wiring Devices L520-P – Frequently Asked Questions

1) Which NEMA configurations does the Cooper severe duty watertight locking connector come in?
Three configurations are offered: L5-20 (2-pole, 125 volts, MPN L520-P), L15-20 (3-pole, 250 volts, MPN L1520-P), and L21-30 (4-pole, 120/208 volts, MPN L2130PW). Pick by the configuration already on the cord cap or receptacle you are mating to, since locking configurations are not cross-compatible.
2) What cord diameter will this watertight locking connector clamp on?
The Ultra Grip cord clamp accepts jacket diameters from 0.43 to 1.15 inches. Anything thinner than 0.43 inch will not seal or grip properly, and a cable over 1.15 inches will not close into the body, so measure the jacket OD on the cordset before ordering.
3) Will the 250 volt 3-pole version work on my 120/208 three-phase equipment cord?
No. The 3-pole variant (L1520-P) is a 250 volt L15-20 device with no neutral. For 120/208 volt three-phase with a neutral you need the 4-pole, 5-wire version, MPN L2130PW. Mixing them will not physically mate and leaves you without the neutral the load needs.
4) What is the closest equivalent to the Cooper L2130PW four-pole locking connector from another brand?
The nearest match in a competing line is the Leviton 2323, a 5-wire 4-pole industrial grade locking connector rated 20A. The Cooper severe duty connector in its four-pole configuration is the L2130PW at 120/208 volts, built with steel contacts and a watertight IP67 housing with Ultra Grip cord clamping for cord diameters of 0.43 to 1.15 in. The Leviton is described as industrial grade; if the wet-location or washdown exposure is the driver, the IP67 watertight construction is the distinguishing feature of the Cooper.
5) Will a Leviton 2313 work in place of the Cooper L1520-P?
No, they are different configurations. The Leviton 2313 is a 3-wire 2-pole industrial grade connector, 125V 30A, NEMA L5-30R. The Cooper L1520-P is the three-pole 250-volt option in the severe duty family. The pole count and voltage differ, so the two will not mate with the same cap.
6) Is this connector back-wired or side-wired?
Termination is back wiring, so conductors land on back-wired terminals inside the body rather than under side screws. That speeds up field termination on a cordset and keeps the conductor bends inside the shell.
7) How many conductors does the 4-pole version of this Cooper locking connector take?
Five. The L21-30 configuration (MPN L2130PW) is 4-pole, 5-wire at 120/208 volts, which is three hots, a neutral and a ground, the usual arrangement for three-phase wye cord drops.
8) I do not need a watertight connector indoors. What is a cheaper locking connector option?
For dry indoor industrial use, a non-watertight body is enough. ZenSupply carries the Leviton 2313 industrial grade L5-30R 2-pole 3-wire connector at 125V 30A, the Leviton 2413 industrial 3-pole 4-wire at 125/250V, and the Leviton 2323 industrial 4-pole 5-wire at 20A. Go to the Cooper severe duty watertight body when the connection sees weather, immersion or washdown, since that is where the IP67 rating earns its keep.
9) Is a non-metallic locking connector a substitute for this steel severe duty one?
Not an equal swap. The Bryant 71020NC is a non-metallic 7 Series NEMA locking connector and the Bryant 70520NCC is a 705 Series connector, both suited to lighter or corrosive-exposure duty where a nonmetallic shell is preferred. The Cooper unit is a steel-bodied, IP67 watertight device for severe duty industrial cord connections. Match the NEMA configuration first either way, since the shell material does not make configurations interchangeable.
10) What is a non-metallic alternative to a steel-bodied locking connector?
The Bryant 71020NC is a non-metallic NEMA locking connector in the 7 Series, and the Bryant 70520NCC is a 705 Series locking connector. The Cooper severe duty connector is built with steel contacts and a steel body, so if the application calls for a non-conductive housing the Bryant non-metallic unit is the one to specify.
11) What three-pole four-wire locking connector is comparable for a 125/250V cordset?
The Leviton 2413 is an industrial locking connector, 4-wire 3-pole, 125/250V. The Cooper severe duty family's three-pole option is the L1520-P at 250 volts, so for a 125/250V three-pole opening the Leviton is the match on configuration. The Cooper adds a watertight IP67 housing and back-wired terminals for field termination.
12) Are the contacts brass or steel on this severe duty connector?
Steel contacts, and the body material is listed as steel as well. That is the severe duty construction, aimed at industrial duty cycles and repeated plugging rather than light commercial use.
How fast can I get the Cooper Wiring Devices L520-P 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 L520-P come with a warranty?
Absolutely. The Cooper Wiring Devices L520-P 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 L520-P?
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 L520-P from ZenSupply?
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