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Gray threaded aluminum hazardous-location plug with plain finish

Killark

Killark CUP-4 Haz Loc Plug 1-1/4 in Threaded Copper Plain Gray

SKU CH-J3GA-E1NN2

Hazardous-location threaded plug seals 1-1/4 in conduit openings in Class I, II and III divisions

  • Product typeCable Management & Conduit
  • Hazardous-location rated for Class I, II, III divisions
  • Male-to-male threaded hub seals conduit ends securely
  • Copper-free aluminum resists corrosion in harsh environments
  • Compact 1 in length fits tight enclosure spaces
  • Lightweight 0.11 lb eases installation and handling

Hazardous-location conduit plug

The Killark CUP-4 is a blank plug designed to seal a 1-1/4 inch threaded conduit hub in hazardous environments. It carries Class I Division 1 and 2 ratings for Groups A through D, Class II Division 1 and 2 for Groups E, F and G, and Class III Division 1 and 2 approvals. The plain-finish aluminum body measures one inch in overall length.

Installers closing unused hubs

This plug suits electricians and maintenance crews who need to cap a single 1-1/4 inch NPT opening in a classified area. It is not intended for connecting two conduit runs or for use with non-threaded fittings. Buyers who need a reducing bushing, a coupling or a plug for a different trade size should select another fitting.

Class I Division 1 Groups A B C D rating

The hazardous-location certification determines whether this plug meets the area classification for a given installation. Verify that the required class, division and group markings match the project specifications before fitting.

How it compares

Measured against everything we stock in Electrical Conduit & Fittings, at today’s prices. Recalculated every night.

Price $4.99
Cheaper than about 90% of the 1,290 comparable items (median $28.99).

Specifications

Product
Brand nameHUBBELL KILLARK
Product typeCable Management & Conduit

Questions about this item

What hazardous-location rating limits where this plug can be installed?

It is rated for Class I Division 1 and 2 Groups A B C D, Class I Zones 1 and 2 Groups IIC IIB IIA, Class II Division 1 and 2 Groups E F G, and Class III Division 1 and 2.

How much heat does the aluminum body add when the circuit runs continuously?

The solid aluminum plug has no active components so it generates no measurable heat of its own under continuous operation.

Which hub or threaded opening must already be in place for this 1-1/4 in MNPT plug to seal?

A 1-1/4 inch NPT threaded hub or taped hole is required to accept the male threads on this plug.

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