Eaton Industrial 50A Locking P...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$191.71
Eaton Industrial 50A Locking Plug, Armored Steel Construction

Eaton Industrial 50A Locking Plug, Armored Steel Construction

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Model: 3763

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

$191.71
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Eaton Industrial 50A Locking Plug, Armored Steel Construction

Eaton's Industrial 50A Locking Plug is a heavy-duty, non-NEMA locking device engineered for demanding power connections in industrial settings. Rated 600 Vac / 250 Vdc at 50A, this extra heavy-duty plug accepts #10-6 AWG wire and uses a back wiring method for secure, code-compliant terminations. Built with an armored design, stainless steel material, glass-filled nylon face/body construction, and zinc-plated brass contacts, it delivers rugged performance in tough environments. CSA certified for dependable, compliant operation on demanding job sites.

Key Features

  • Amperage & Voltage Rating: Rated 50A at 600 Vac / 250 Vdc for extra heavy-duty industrial power connections.
  • Allowable Wire Size: Accepts #10-6 AWG wire for flexible, reliable field terminations.
  • Back Wiring Method: Back-wired terminals simplify installation and deliver secure, lasting connections.
  • Extra Heavy-Duty Device Grade: Engineered for rigorous industrial applications and repeated cycling.
  • Armored Steel Construction: Stainless steel material with an armored design type for superior mechanical protection.
  • Face/Body Material: Glass-filled nylon face/body construction adds impact resistance and insulation.
  • Contact Material: Zinc-plated brass contacts resist corrosion and support reliable conductivity.
  • Operating Temperature: Rated -40 to 90 °C (-40 to 194 °F) for wide-ranging environmental conditions.

Certifications & Compliance

  • CSA Certified

Technical Specifications

  • Warranty: Refer to warranty document.

Typical Applications

  • Industrial and Manufacturing Facilities
  • Heavy Machinery and Equipment Power Connections
  • Temporary and Portable Power Distribution
  • Extra Heavy-Duty Industrial Power Applications
  • Commercial and Industrial Electrical Installations

Why Eaton?

Eaton engineers this locking plug with stainless steel material, an armored design, and zinc-plated brass contacts to withstand demanding industrial environments. Backed by CSA certification and an extra heavy-duty device grade, it delivers dependable, code-compliant power connections. Choose Eaton for rugged, reliable electrical devices built for professional industrial use.

Manufacturer Resources

Product Specs

Number Of Poles:
Two-pole
Contact Material:
Zinc plated brass
Product Width:
3.1 in
Voltage Rating:
600V/250VDC
Amperage Rating:
50A
Device Grade:
Extra heavy duty
Product Color:
Steel
Nema Configuration:
Non-NEMA
Product Length/Depth:
5.73 in
Special Features:
Armored
Application:
Industrial
Wiring Method:
Back
Operating Temperature:
-40 to 90 °C (-40 to 194 °F)
Face/body material:
Glass filled nylon
Product Height:
2.68 in
Product Type:
Locking Plug
Product Material:
Stainless Steel
Design Type:
Armored
Cord Diameter:
0.68-1.33 in (17.3-28.6 mm)
Allowable Wire Size:
#10-6 AWG
Warranty:
Refer to warranty document.
Number Of Wires:
Grounding
Certifications:
CSA certified
Department:
Electrical
Configuration:
Non-NEMA
Listing:
CSA Certified
Product Group:
Wiring Devices
Product Subgroup:
Plugs & Connectors

Eaton 3763 – Frequently Asked Questions

1) What size cord will fit the Eaton 3763 armored plug's clamp?
The cord grip takes jackets from 0.68 to 1.33 inches in diameter (17.3 to 28.6 mm). That is a wide window, but a small SOOW cord under 0.68 inches will not clamp properly in the armored body, and oversized welder or feeder cable above 1.33 inches will not enter. Match the cord OD before you cut it in.
2) What wire gauge can I land in the Eaton 50A armored locking plug?
Terminals accept #10 through #6 AWG, back wired. At a 50A rating you are realistically landing #6 copper, which is the top end of the range, so plan conductor prep accordingly. Back wiring means the conductors come in behind the terminal rather than wrapping a screw head, which holds up better under vibration and repeated cord flexing.
3) How many poles and wires does the Eaton 3763 plug have, and can I use it on a three-phase circuit?
It is a two-pole device with grounding, so two current-carrying poles plus a ground. That suits single-phase 600 Vac or 250 Vdc loads. It is not a three-phase plug. For a three-phase connection you would need a three-pole device such as the Leviton L16-30P 480V 3-phase plug or a 4-wire 125/250V 3-phase unit.
4) Is the Eaton 3763 locking plug interchangeable with a NEMA locking plug like the Leviton L6-15P?
No. The Eaton 3763 is a non-NEMA configuration, so its blade pattern will not mate with a NEMA-standard locking receptacle. The Leviton 4570-C is an industrial grade 2-pole locking plug in NEMA L6-15P, 250V 15A, and it only connects to an L6-15 receptacle. If the receptacle in the field carries a NEMA configuration marking, the Eaton 3763 is not the mating device for it - match the plug to the existing receptacle pattern rather than to the amperage alone.
5) What should I use instead of the Eaton 3763 if my equipment runs on 480V three-phase?
The Eaton 3763 is a two-pole grounding device rated 600 Vac / 250 Vdc, which does not give you the pole count for a three-phase four-wire circuit. For 480V three-phase at 30A, the Leviton L16-30P is an industrial grade polarized locking plug in NEMA L16-30P. Confirm the receptacle on the machine or feeder matches that L16-30 pattern before ordering.
6) Do I need the armored steel Eaton 3763 or is a non-metallic locking plug enough?
That depends on the mechanical abuse the plug sees. The Eaton 3763 is an extra heavy duty device with an armored design, stainless steel body material, glass filled nylon face/body and zinc plated brass contacts, and it is rated -40 to 90 degrees C. The Bryant 71020NP is a 7 Series non-metallic locking plug, which is the lighter-bodied approach for connections that are made up and left alone in a protected location. For portable power on a plant floor where the cord gets dragged and the plug gets dropped, the armored construction is the reason to specify the 3763.
7) My cord is 12 AWG on a 20A 250V circuit - is the Eaton 3763 the right plug?
The Eaton 3763 is a 50A device that accepts #10-6 AWG wire and a cord diameter of 0.68 to 1.33 in (17.3 to 28.6 mm), so a 12 AWG cord falls below both its conductor and cord grip range. For 20A at 250V, the Leviton L6-20P is an industrial grade locking plug in NEMA L6-20P. Match the plug to the branch circuit rating and the cord it terminates.
8) Is this Eaton plug rated for outdoor cold weather and hot machinery bays?
The operating range runs from -40 to 90 degrees C (-40 to 194 degrees F), which covers unheated yards, cold storage and hot equipment rooms. The glass filled nylon face and body and stainless steel armor hold up to impact in those settings; the contacts are zinc plated brass for corrosion resistance.
9) Do I need an armored plug, or will a standard industrial locking plug do the job?
Armored makes sense where the plug gets dropped, dragged or struck: portable power distribution, welders, temporary feeds on a construction floor, heavy machinery cords. The Eaton 3763 uses an armored steel shell over a glass filled nylon body and is graded extra heavy duty for repeated cycling. If the connection is fixed, indoors and rarely unplugged, a non-metallic industrial plug like the Bryant 71020NP 7 Series is lighter and simpler.
10) I need a 15A or 20A locking plug, not 50A. What are my options?
The Eaton 3763 is a 50A device and is oversized for a 15A or 20A cord. For lighter loads, the Leviton 4570-C is an industrial grade 2-pole NEMA L6-15P at 15A 250V, the Leviton 2321 is NEMA L6-20P at 20A 250V, and the Bryant 4722N is an angle plug in NEMA L5-15P at 15A 125V.
11) Will a 15A 125V twist-lock plug work in place of the Eaton 3763?
No. The Bryant 4722N is an angle locking plug in NEMA L5-15P rated 15A 125V - a different voltage class, a different blade pattern, and a fraction of the current capacity. The Eaton 3763 is a 50A non-NEMA device rated 600 Vac / 250 Vdc with back wiring for #10-6 AWG conductors. The two are not substitutes in either direction.
12) For standardizing plugs across a facility, how does the Eaton 3763 compare to industrial grade Leviton locking plugs?
The Eaton 3763 is graded extra heavy duty and CSA certified, with an armored stainless steel body. The Leviton locking plugs in the same family of devices - the L6-15P, L6-20P, L16-30P and the 125/250V four-wire version - are all industrial grade. If the goal is one plug family across a site, the deciding factor is usually configuration rather than grade: the Leviton devices carry NEMA configurations that let you stock matching receptacles off the shelf, while the Eaton 3763 is non-NEMA and needs to be paired with its mating device deliberately.
13) How much room do I need to allow behind a panel or in a cord reel for this 50A armored plug?
Overall it measures 5.73 in length/depth, 3.1 in width and 2.68 in height. That is a bulky device compared with a 15A or 20A industrial plug, so check clearance in cable reels, strain relief loops and equipment enclosures before you commit to it.
14) Is the Eaton 3763 suitable for DC power, like battery charging equipment?
Yes, it is rated 250 Vdc as well as 600 Vac at 50A. That covers DC applications up to 250 volts, such as charger feeds and DC-driven machinery, with the same two-pole plus ground arrangement.
How fast can I get the Eaton 3763 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 3763 come with a warranty?
Absolutely. The Eaton 3763 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 3763?
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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