Device protection

Device circuit breakers

Selective power distribution

Reliable protection with device circuit breakers against damaging overload and short-circuit currents.

Selective device protection with an adjusted tripping characteristic provides maximum security for every load. As such, only those areas are protected which are actually affected by overload or short circuit current. In the following pages, find out how protective devices work and which applications the various versions are suitable for.


8240 Parkhill Drive
Milton, Ontario L9T 5V7


CBM – multi-channel device circuit breakers

Startup and signaling

Current limitation – what is it?

Behaviors of circuit breakers with or without active current limitation

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