Appleton U-Line Contender ENR5...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,010.47
Appleton U-Line Contender ENR5201 Factory-Sealed Receptacle Cover Assembly, 20A

Appleton U-Line Contender ENR5201 Factory-Sealed Receptacle Cover Assembly, 20A

(No reviews yet) Write a Review

Model: ENR5201

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

$1,010.47
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

Appleton U-Line Contender Factory-Sealed 20A Plug and Receptacle Set, 3-Pole

The Appleton U-Line Contender Factory-Sealed 20 Amp Plug and Receptacle Set features a dead-front design that keeps the receptacle de-energized until the plug is fully inserted and the switch is engaged, making it ideal for electrical equipment in hazardous locations. A neoprene gasket in the throat of the receptacle seals against the plug or the spring-loaded cover to block out water, dust, and corrosive compounds. This 3-pole, 2-wire, 20A device is rated 125 Vac or 250 Vac and is built for demanding industrial and hazardous-area environments where reliable, code-compliant connections are critical.

Key Features

  • Dead-Front Design: The receptacle is not energized until the plug is fully inserted and the switch is engaged, reducing arc-flash risk.
  • Durable Construction: Mounting boxes are malleable iron with a triple-coat finish of zinc electroplate, chromate, and epoxy powder coat for corrosion resistance.
  • Aluminum Covers: Standard receptacle covers and optional aluminum mounting boxes are copper-free (4/10 of 1% max.) aluminum with epoxy powder coat.
  • Insulator Block: Glass-filled reinforced polyester provides superior dielectric and mechanical strength with the lowest arc tracking.
  • Electrical Rating: 20A, 125 Vac or 250 Vac, 3-pole, 2-wire configuration.
  • Intermatable Design: ECP plugs fit any standard non-explosionproof receptacle (NEMA 5-20R or 6-20R) as well as U-Line explosionproof receptacles, and are intermatable with competitors' plugs of like configurations.
  • Flexible Mounting: Mounting box entries support Dead-End or Feed-Thru configurations, with plug cable diameter range of .538–.639.

Certifications & Compliance

  • UL Listed when used with Contender Series mounting boxes
  • UL Classified when used with Crouse-Hinds EDS series mounting boxes
  • Class I, Groups C, D; Class I, Division 2, Group B; Class I, Zone 1, Group IIB; Class I, Zone 2, Group IIB + H2
  • Class II, Groups F, G; Class III
  • NEMA 3RX, 7CD, 9FG

Technical Specifications

  • Number of Poles: 3
  • Amperage: 20
  • Number of Wires: 2
  • Voltage: 125 Vac or 250 Vac
  • Insulator Block Material: Glass-filled reinforced polyester
  • Plug Cable Diameter: .538 – .639
  • Mounting Box Entries: Dead-End or Feed-Thru

Typical Applications

  • Hazardous Location Electrical Equipment
  • Industrial and Petrochemical Facilities
  • Explosionproof and Corrosive-Duty Environments
  • Portable Equipment Power Connections
  • Wet, Dusty, or Corrosive Compound Environments

Why Appleton?

Appleton's U-Line Contender Series combines malleable iron and copper-free aluminum construction with a dead-front, factory-sealed design engineered specifically for hazardous locations. With UL Listed and UL Classified cover options, glass-filled reinforced polyester insulators, and broad Class I, II, and III hazardous area classifications, this plug and receptacle set delivers the reliable, code-compliant performance electrical professionals depend on.

What this is: ENR5201 is a Contender-series factory-sealed receptacle cover assembly (125 VAC, 20A) — the spring-loaded cover/gasket assembly that mounts to a Contender receptacle body, not a complete plug-and-receptacle set. If you need a complete ready-to-install set, see the ECSK-2023 or EFSR-2023M listings.

Product Specs

Product Type:
Receptacle Accessory
Amperage Rating:
20A
Voltage Rating:
125/250VAC
Listing:
UL Listed
Standards:
NEMA 3RX, 7CD, 9FG
Product Material:
Malleable Iron
Department:
Electrical
Product Group:
Wiring Devices
Product Subgroup:
Receptacles & Outlets

Appleton ENR5201 – Frequently Asked Questions

1) What hazardous locations is the Appleton U-Line Contender receptacle rated for?
Coverage runs Class I, Groups C and D; Class I, Division 2, Group B; Class I, Zone 1, Group IIB; Class I, Zone 2, Group IIB + H2; Class II, Groups F and G; and Class III. Enclosure ratings are NEMA 3RX, 7CD and 9FG, which covers outdoor corrosion-resistant service plus explosionproof and dust-ignitionproof duty.
2) Will a standard 20A plug work with the Appleton U-Line Contender receptacle?
Yes, the configuration is intermatable. ECP plugs fit standard non-explosionproof NEMA 5-20R or 6-20R receptacles as well as U-Line explosionproof receptacles, and mate with competitors' plugs of like configuration. The device is 20A, 3-pole, 2-wire, rated 125 or 250 Vac.
3) Can I use a standard heavy-duty industrial receptacle instead of the Appleton Contender?
Only outside a classified area. Spec-grade industrial devices like the Bryant 5362B 20A/125V heavy-duty duplex or the Pass & Seymour 26352W 20A 125V spec-grade decorator duplex are for ordinary locations; they carry no hazardous-location rating. In a Class I or Class II area you need the Contender factory-sealed assembly with its NEMA 7CD/9FG enclosure rating.
4) Is the Appleton ENR5201 a complete plug and receptacle set, or do I need to order something else?
The ENR5201 is the Contender-series factory-sealed receptacle cover assembly - the spring-loaded cover and gasket assembly that mounts to a Contender receptacle body, rated 125 VAC at 20A. If you need a complete ready-to-install set, the ECSK-2023 and EFSR-2023M are the Appleton assemblies to order instead. It is UL Listed when used with Contender Series mounting boxes and UL Classified with Crouse-Hinds EDS series boxes.
5) Can a Bryant 5362B heavy-duty duplex receptacle be used instead of the Appleton ENR5201 in a hazardous location?
No. The Appleton U-Line Contender ENR5201 is a factory-sealed receptacle cover assembly rated NEMA 3RX, 7CD, 9FG for Class I, II and III hazardous areas, with a malleable iron mounting box and dead-front operation that keeps the receptacle de-energized until the plug is inserted and the switch engaged. The Bryant 5362B is a heavy-duty 20A/125V duplex receptacle for general commercial and industrial wiring. Both carry a 20A rating, but only the Appleton assembly is built and classified for explosionproof and corrosive-duty service.
6) What cable diameter does the Contender plug accept?
Plug cable diameter range is .538 to .639 inches. Cord outside the range will not seal correctly at the throat gasket, so size your SO or SOOW cord to that window before ordering.
7) How does a dead-front receptacle reduce arc flash risk on portable equipment?
The receptacle stays de-energized until the plug is fully seated and the switch is engaged, so contacts never make or break under load in the open. That is why these are specified for portable equipment power in petrochemical and industrial areas rather than a standard industrial-grade receptacle.
8) What keeps water and corrosive dust out of the Contender receptacle?
A neoprene gasket in the throat of the receptacle seals against either the inserted plug or the spring-loaded cover when nothing is plugged in. Mounting boxes are malleable iron with a triple coat of zinc electroplate, chromate, and epoxy powder coat; covers and optional boxes are copper-free aluminum (4/10 of 1 percent max) with epoxy powder coat.
9) I need a locking receptacle for portable equipment rather than a sealed hazardous-location cover - what are the alternatives to the Appleton ENR5201?
For a locking connection outside a hazardous area, the Bryant 70520FR is a 7 Series NEMA flanged locking receptacle, the Pass & Seymour 3330 Turnlok is a 30A non-NEMA single receptacle, and the Eaton 7379 is an industrial locking receptacle rated 50A, 600V/250V AC/DC. The Appleton U-Line Contender ENR5201 takes a different approach: it is a 20A factory-sealed cover assembly whose retention comes from the gasketed throat and spring-loaded cover, and its ECP plugs also fit standard NEMA 5-20R or 6-20R receptacles.
10) What is the difference between the Appleton ENR5201 and a Pass & Seymour 26352W spec grade duplex receptacle at the same 20A rating?
Both are rated 20A at 125V, but they solve different problems. The Pass & Seymour 26352W is a heavy-duty specification grade decorator duplex receptacle in white, intended for finished commercial interiors. The Appleton U-Line Contender ENR5201 is a factory-sealed receptacle cover assembly with a spring-loaded cover and neoprene throat gasket that seals against the plug to block water, dust, and corrosive compounds, and is rated 125/250 VAC for hazardous and wet locations.
11) For a hospital or healthcare corridor, should I specify the Appleton ENR5201 or a hospital grade device?
Healthcare patient-care areas are normally served by hospital grade devices such as the Pass & Seymour 2097HGI, a hospital grade 20A duplex self-test GFCI receptacle in ivory. The Appleton U-Line Contender ENR5201 is a factory-sealed 20A receptacle cover assembly classified for Class I, II and III hazardous areas and NEMA 3RX, 7CD, 9FG environments, which points it toward plant, petrochemical, and corrosive-duty spaces rather than finished patient rooms.
12) Can I feed through to a second Contender receptacle from the same box?
Yes. Contender mounting box entries support either Dead-End or Feed-Thru configurations, so you can daisy chain along a run rather than home-running each device.
13) What is the insulator made of and why does it matter in a wet or corrosive area?
Glass-filled reinforced polyester. It gives high dielectric and mechanical strength with very low arc tracking, which is what you want where moisture and conductive dust can bridge across a block over time.
14) What is a simpler option than the Appleton ENR5201 for a single-outlet industrial drop that is not in a classified area?
For an unclassified area, single-outlet options include the Eaton 6450W heavy-duty industrial specification grade decorator single receptacle, which accepts #14-10 AWG conductors, and the Eaton 816W commercial specification grade single receptacle rated 15A. Both are conventional wall devices. The Appleton U-Line Contender ENR5201 is the choice when the drop must be a factory-sealed, dead-front 20A connection in a wet, dusty, or corrosive environment.
15) Does the Appleton ENR5201 offer tamper resistance like a Trademaster tamper-resistant receptacle?
They protect against different things. The Pass & Seymour 3232TRW is a Trademaster tamper-resistant duplex receptacle in white, using internal shutters to guard against foreign object insertion in occupied spaces. The Appleton U-Line Contender ENR5201 instead uses a dead-front design that keeps the receptacle de-energized until the plug is fully inserted and the switch is engaged, plus a spring-loaded gasketed cover that seals the throat when no plug is in place.
How fast can I get the Appleton ENR5201 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 Appleton ENR5201 come with a warranty?
Absolutely. The Appleton ENR5201 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 Appleton ENR5201?
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 Appleton ENR5201 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.
!