Appleton U-Line ECS Factory-Se...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$670.23
Appleton U-Line ECS Factory-Sealed 15 and 20 Amp Plug and Receptacle Set, 3-Pole

Appleton U-Line ECS Factory-Sealed 15 and 20 Amp Plug and Receptacle Set, 3-Pole

(No reviews yet) Write a Review

Model: ECSK-2023

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

$670.23
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 ECS Factory-Sealed 15 and 20 Amp Plug and Receptacle Set, 3-Pole

The Appleton U-Line ECS Factory-Sealed 15 and 20 Amp Plug and Receptacle Set is a dead-front, 3-pole, 2-wire connection system engineered for hazardous location electrical equipment. Rated 125 Vac or 250 Vac, this factory-sealed design confines arcing safely inside the receptacle interior so no external seals are required. Built from copper-free aluminum with an epoxy powder coat finish and fiberglass-reinforced polyester insulating blocks, the assembly is rated for Class I, Division 1 and 2 Groups B, C, D; Class II, Division 1 and 2 Group G (Coal Dust); and Class III hazardous locations, with CSA Type 7BCD, 9G recognition.

Key Features

  • Dead Front Design: Energized receptacle contacts are deeply recessed to reduce the danger of accidental touching.
  • Durable Construction: Copper-free (4/10 of 1% max.) aluminum housing with epoxy powder coat finish and fiberglass-reinforced polyester insulating blocks for superior dielectric and mechanical strength with lowest arc tracking.
  • Factory Sealed: No external seals required; arcing is safely confined to the receptacle interior.
  • Sealing Gasket: Neoprene gasket in the throat of the receptacle seals against the plug or spring-loaded cover to keep out water, dust, and corrosive compounds.
  • Blade-Type Contacts: Unique brass contacts exert constant pressure along the entire contact surface for superior electrical contact.
  • Intermateable Design: Compatible with competitor plugs of like configurations; the ECP plug also fits any standard non-explosionproof receptacle (NEMA 5-15R, 5-20R, or 6-20R) as well as U-Line explosionproof receptacles.
  • Electrical Rating: 125 Vac or 250 Vac, 15 and 20 amp, 3-pole, 2-wire, with 1 and 2 horsepower ratings.
  • Mounting Flexibility: Mounting box supports dead-end or feed-thru entries; plug accepts cable diameters from .538 to .639.

Certifications & Compliance

  • Class I, Division 1 and 2, Groups B, C, D
  • Class II, Division 1 and 2, Group G (Coal Dust)
  • Class III Hazardous Locations
  • CSA Type 7BCD, 9G

Technical Specifications

  • Number of Poles: 3
  • Amperage: 20
  • Number of Wires: 2
  • Voltage: 125 Vac or 250 Vac
  • Horsepower Ratings: 1, 2
  • Materials and Finishes: Copper-free aluminum with epoxy powder coat; fiberglass-reinforced polyester insulating blocks
  • Mounting Box Entries: Dead-End or Feed-Thru
  • Plug Cable Diameter: .538 – .639

Typical Applications

  • Hazardous Location Electrical Connections
  • Oil and Gas Production and Processing Facilities
  • Chemical and Petrochemical Plants
  • Coal Handling and Mining Operations
  • Industrial Power Distribution in Classified Areas

Why Appleton?

Appleton engineers the U-Line ECS Series with copper-free aluminum construction, epoxy powder coat finishing, and fiberglass-reinforced polyester insulators to deliver superior dielectric and mechanical strength in demanding hazardous environments. The factory-sealed, dead-front design and recessed contacts help keep personnel safe while maintaining reliable, code-compliant electrical connections for Class I, II, and III classified installations.

U-Line family note: this is the ECS/ECSK dead-front design — the receptacle stays de-energized until the plug is fully inserted, no external seals required. It is a different mechanism from the EFSR/straight-blade spring-door line and from the Contender sub-line (both sold as separate listings) — not interchangeable parts of one product.

Product Specs

Product Type:
Receptacle
Series:
U-Line ECS
Product Finish:
Epoxy Powder Coat
Voltage Rating:
125/250V
Amperage Rating:
15/20A
Standards:
CSA Type 7BCD, 9G
Product Material:
Aluminum
Department:
Electrical
Product Group:
Wiring Devices
Product Subgroup:
Receptacles & Outlets

Appleton ECSK-2023 – Frequently Asked Questions

1) Do I need to install a separate seal fitting with the Appleton U-Line ECSK-2023 receptacle?
No external seals are required. The U-Line ECS is a factory-sealed design, so arcing is confined inside the receptacle interior and you can land the conduit run without adding a seal fitting at the device. That is the main labor difference between this and a standard hazardous-location receptacle installation.
2) What hazardous location classes and groups is the Appleton U-Line ECS plug and receptacle rated for?
Class I, Division 1 and 2, Groups B, C and D; Class II, Division 1 and 2, Group G (coal dust); and Class III locations. It also carries CSA Type 7BCD, 9G. Group B coverage matters if you have hydrogen present, since many competing hazardous-location devices stop at Groups C and D.
3) Can the Appleton ECP plug be used in a normal industrial receptacle, or only in explosionproof ones?
Both. The ECP plug mates with standard non-explosionproof receptacles in NEMA 5-15R, 5-20R or 6-20R configurations as well as U-Line explosionproof receptacles, and it intermates with competitor plugs of like configuration. That lets a crew carry one cord set between classified and unclassified areas of the same plant.
4) What voltage and amperage will the U-Line ECS set handle, and can it run a motor?
Rated 125 Vac or 250 Vac at 15 and 20 amps, 3-pole, 2-wire, with horsepower ratings of 1 and 2. So it will feed a 1 HP load at the lower voltage tier or 2 HP, which covers most portable pumps, blowers and agitators in a classified area.
5) Can I use a standard heavy-duty industrial receptacle instead of the Appleton U-Line ECS in a classified area?
No. Devices like the Bryant 5362B heavy-duty 20A/125V duplex or the Eaton Arrow Hart 15A 125V 5-15R industrial duplex are general-purpose industrial wiring devices with no hazardous-location rating and cannot be substituted where Class I, II or III applies. The U-Line ECS is the one to use in the classified area; the general-purpose spec-grade devices belong in the unclassified portions of the same facility.
6) Can a heavy-duty industrial receptacle like the Bryant 5362B or Eaton 5262W be used in place of the Appleton ECSK-2023 in a Class I Division 1 area?
No. The Appleton U-Line ECS set is a factory-sealed, dead-front assembly rated for Class I, Division 1 and 2 Groups B, C, D; Class II, Division 1 and 2 Group G (coal dust); and Class III hazardous locations, with CSA Type 7BCD, 9G recognition, and it confines arcing inside the receptacle interior so no external seals are required. The Bryant 5362B is a heavy-duty grade 20A/125V duplex receptacle and the Eaton 5262W is an industrial specification grade 15A 125V 5-15R duplex - both are general-purpose wiring devices carrying no hazardous-location classification. Use them only in unclassified areas.
7) If I run the ECP plug from a hazardous area out to an unclassified shop wall, what standard receptacle will it mate with?
The ECP plug that mates with the U-Line ECS receptacle also fits any standard non-explosionproof NEMA 5-15R, 5-20R or 6-20R receptacle, so a general-purpose spec grade device in an unclassified area will accept it. The Eaton Arrow Hart 5262W is an industrial specification grade 15A 125V 5-15R duplex, and the Pass & Seymour 26352W is a 20A 125V heavy-duty spec grade decorator duplex - either configuration matches what the plug is built to enter. The hazardous-location rating stays with the Appleton receptacle end only.
8) What cable diameter does the Appleton U-Line ECS plug accept?
The plug takes cable diameters from .538 to .639 inches. Measure the jacket OD on the cord you plan to terminate before ordering; portable cord outside that window will not seal properly in the plug's grip.
9) Can I feed through to another device from the U-Line ECS mounting box?
Yes. The mounting box supports dead-end or feed-thru entries, so you can either terminate the run at the receptacle or continue the circuit to the next device without a separate junction box.
10) How is the dead-front ECS different from the Appleton EFSR spring-door receptacles?
Different mechanism entirely. On the ECS/ECSK dead front, the contacts are deeply recessed and the receptacle stays de-energized until the plug is fully inserted. The EFSR straight-blade spring-door line and the Contender sub-line work differently and are sold separately; parts do not swap between them. If you are matching an existing device in the field, identify which of the three families is on the wall before you order.
11) I need more than 20 amps for my portable equipment. Is there an alternative to the ECS set?
The U-Line ECS tops out at 15 and 20 amps. For higher current in a non-classified area, a locking device such as the Eaton 7379 industrial locking receptacle at 50A, 600V/250V AC/DC or the Pass & Seymour L2130R 30A single receptacle covers the range, but neither is a hazardous-location device. If the load is above 20A and sits in a classified area, you need a larger explosionproof receptacle, not this set.
12) How does the dead-front design protect workers plugging in equipment?
Energized receptacle contacts sit deeply recessed so there is much less chance of touching a live part with a finger or a tool, and the receptacle does not energize until the plug is fully seated. Combined with the factory seal that confines arcing inside the housing, that is what makes it acceptable to make and break connections in a classified area.
13) The ECSK-2023 is more device than I need for a 20 amp 125V drop in a clean production room - what is a simpler option?
The Appleton U-Line ECS set is built for classified areas: copper-free aluminum with an epoxy powder coat finish, fiberglass-reinforced polyester insulating blocks, and a factory-sealed dead-front interior. For a 20 amp 125 volt drop in an unclassified room, the Bryant 5362B heavy-duty duplex and the Pass & Seymour 26352W heavy-duty spec grade decorator duplex are both 20A 125V devices without the explosionproof housing. If the room is 15 amp, the Eaton 816W is a commercial specification grade 15A single receptacle. Confirm the area classification first, because none of those three substitute where a hazardous-location rating is required.
14) What exactly ships as the Appleton ECSK-2023, and what kind of contacts does it use?
ECSK-2023 is the plug and receptacle set, 3-pole 2-wire, from the U-Line ECS series. The receptacle uses blade-type brass contacts that exert constant pressure across the full contact surface, which is what keeps resistance down on a connection that gets cycled frequently in the field.
How fast can I get the Appleton ECSK-2023 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 ECSK-2023 come with a warranty?
Absolutely. The Appleton ECSK-2023 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 ECSK-2023?
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 ECSK-2023 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.
!