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 EBBR explosion-proof interlocking sockets with enclosed circuit breakers are used as a service outlet for portable equipment in areas which are hazardous due to flammable vapours, gases or combustible dust. Mechanically interlocked with circuit breakers to provide a means of disconnection, short-circuit protection and thermal time-delay overload protection.

The EBBR’s rugged, corrosion-resistant aluminium construction and NEMA 3R rating make it ideal for hazardous areas where frequent washdowns are necessary or where heavy rain or water spray is prevalent.

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Overview Models Resources

Certification and compliance

NEC

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

NEMA

NEMA: 3, 3R, 7BCD, 9FG, 12

UL standard

UL1203

*To reduce the risk of ignition of hazardous atmospheres, do not use plugs or sockets in Class II, Group F locations that contain electrically conductive dusts.

Design features

Rugged, corrosion-resistant, cast copper-free aluminium construction
Accepts compatible Arktite plugs of the same rating and configuration
Mechanical interlock mechanism for dead-front construction
Sockets are mechanically interlocked with circuit breakers to provide disconnect means, short circuit protection and thermal time delay overload protection
A spring-door socket, located at the bottom of the unit, is mechanically interlocked with the circuit-breaker operating mechanism for safe and dependable operation
Plug and socket contacts cannot be made or broken under load
Operating handles can be padlocked in either "ON" or "OFF" positions
Component operating handles located through the right side wall of the body permits visual confirmation of correct component assembly and operation
Semi-clamshell enclosure design, with an external machined flat joint flamepath between body and cover, makes interior components easily accessible
Minimum enclosure-to-enclosure spacing with little interference between the opened cover and an adjacent enclosure
Copper-free aluminium hinges allow the cover to swing well out of the way
Stainless steel, quick release, captive, hex head cover bolts; stainless steel springs provide clear indication cover bolts are fully retracted from body
Versatile, internal operating mechanisms allow for field adjustment to accommodate popular manufacturers' breakers

Standard materials

Body, cover and sockets – copper-free aluminium
Contact insulator (receptacles and plugs) – fibreglass-reinforced polyester
Receptacle contacts – leaded red brass
Pressure contacts (plugs) – brass
Operating handle – copper-free aluminium
Operating shafts and bushings – stainless steel
Interior parts – heavy gauge sheet steel, zinc plated
Cover bolts, washer and retractile springs – stainless steel

Drawing and design support

Specifications

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Arktite EBBR explosion-proof interlocked receptacles with enclosed circuit breakers