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GUSC Explosionproof Circuit Breaker Load Centers

Crouse-Hinds series GUSC explosionproof circuit breaker load centers are used to provide, in one compact unit, a centrally controlled switching system for a large number of feeder or branch circuits to control lighting, heating, appliance, heat tracing, motors and similar circuits.

Certified for use in areas which are hazardous due to the presence of flammable vapors, gases or highly combustible dusts, and which are subject to weather, dampness and corrosion.  Ideal for installation indoors or outdoors at petroleum refineries, chemical and petrochemical plants, and other process industry facilities where similar hazards exist.

Certifications and compliances

NEC/CEC

  • Class I, Divisions 1 & 2, Groups B†, C, D
  • Class II, Division 1, Groups E*, F, G
  • Class II, Division 2, Groups F, G
  • Class III

UL standard

  • UL standard: UL1203

Environmental ratings

  • NEMA 3, 7BCD, 9EFG, 12

†Seals must be installed within 1-1/2" of all conduit openings.

*Standard product is suitable for Class II, Divisions 1 & 2, Groups F, G.  For Class II, Division 1, Groups E, F, G, order with suffix S756V.

Design features

  • Compact rectangular enclosures with round threaded covers
  • External operating handles can be padlocked in either "ON" or "OFF" positions
  • Not furnished with internal wiring, as field wiring connections are made directly to circuit breaker line and load terminals; to meet varying grounding requirements, an insulated neutral terminal block is provided and is equipped with a removable grounding jumper
  • Bodies have 1" vertical through feed hubs

Standard materials

  • Bodies – Feraloy iron alloy
  • Covers and operating handles – copper-free aluminum
  • Operating shafts – stainless steel
  • Interior parts – sheet steel
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