Wednesday, March 12, 2014

Choice of a circuit-breaker

Choice of a circuit-breaker

 

The choice of a CB is made in terms of:

 

·         Electrical characteristics of the installation for which the CB is intended

·         Its eventual environment: ambient temperature, in a kiosk or switchboard enclosure, climatic conditions, etc.

·         Short-circuit current breaking and making requirements

·         Operational specifications: discriminative tripping, requirements (or not) for remote control and indication and related auxiliary contacts, auxiliary tripping coils, connection

·         Installation regulations; in particular: protection of persons

 

 

 

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