Arktite DBR dust-ignition-proof interlocked sockets with enclosed circuit breakers
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Arktite DBR dust-ignition-proof interlocked sockets with enclosed circuit breakers

Eaton’s Crouse-Hinds series hazardous area interlocked sockets prevent engagement and disengagement of the plug under load, providing safe, portable power connections and extended product life.

Arktite DBR dust-ignition-proof interlock sockets with enclosed circuit breakers supply power to portable electrical equipment such as motor generator sets, compressors, heating and cooling units and conveyors in locations where hazardous dusts are present, as in grain-processing and handling plants, chemical plants and certain food-processing industries.

DBR sockets are mechanically interlocked with circuit breakers to provide a means of disconnection, short-circuit protection and thermal time-delay overload protection.

Certification and compliance

NEC

  • Class II, Divisions 1 & 2, Groups F, G
  • Class III

NEMA/EEMAC

  • NEMA/EEMAC 3, 9FG, 12

UL standards

  • UL698, UL1010

CEC

  • Class II, Divisions 1 & 2, Group G
  • Class III

Enclosure

  • Encl. 3, 5

Design features

  • Sockets are mechanically interlocked with circuit breakers to provide disconnect means, short circuit protection and thermal time delay overload protection
  • Enclosures are compact and rectangular in shape, permitting close spacing
  • For maximum safety, the spring-door socket at the bottom is mechanically interlocked with the circuit breaker operating mechanism; the circuit breaker cannot be closed until the plug is fully inserted and the plug cannot be withdrawn unless the breaker is open
  • Operating handles can be padlocked in either "ON" or "OFF" positions; breakers are trip-free of the handles and will open under short-circuit or overload even if the handle is locked in the "ON" position
  • Enclosure is provided with a drilled and tapped conduit opening at top centre, equipped with a threaded-in bushing; the size furnished is 1½", and removing the bushing permits the use of a 2" conduit

Standard materials

  • Bodies, covers and operating handles – copper-free aluminium
  • Operating shafts – stainless steel
  • Receptacle housings and plug exteriors – copper-free aluminium
  • Insulation (plugs and sockets) – fibreglass-reinforced polyester
  • Pressure contacts – brass
  • Crimp/solder contacts – leaded red brass