The circuit breakers operate at -48 Vdc or 24 Vdc at a maximum of 400A in a 4U design, span ratings ranging from 1A to 125A (16 breakers max.), and can be equipped with anyone of 10 glass fuses ...

Circuit breakers rated over these values have an interrupting capacity of 10,000 A. Dc interrupting ratings are available from circuit-breaker suppliers. Higher interrupting ratings are listed in ...

Mitsubishi Electric Automation, Inc., announced the expansion of its WSS Series circuit breakers, as well as the phasing out of older models. Additions to the WSS Series include: UL489 listed 400AF ...

If the circuit breaker is a delay type, a temporary spike won't trip the breaker. The general rule is to specify a circuit breaker rated at 100% of the continuous or average load.

Fig. 1. A circuit breaker with a straight 240V rating can be used on any circuit where the line-to-neutral or line-to-line voltage doesn’t exceed 240V. A circuit breaker with a slash rating, such as ...