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Interlocked Circuit Breakers

Interlocked Circuit Breakers

HEINEMANN Interlocked Circuit Breakers are designed to provide protection in industrial plants, hospitals and other applications where two sources of power are in use. On marine craft, it is used to prevent dockside and on-board power from being on simultaneously. To avoid this potentially hazardous situation, HEINEMANN has developed special circuit breakers which combine three functions into one device — hydraulic-magnetic overload protection, power switching and an interlock.

The interlock allows only one power source to be on at one time, although both can be off at the same time. This eliminates the need for a separate selector switch. Interlocked circuit breakers are available with current ratings from 0.01 to 100 amperes and from 100 to 250 amperes. Requires 4 pole minimum.

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