CIRCUIT BREAKER THERMAL LOAD VISUAL GAUGE

摘要

A thermal gauge for circuit breaker useful for indicating operating conditions, such as in a miniature circuit breaker, has a thermal transducer thermally connected to the current path of the circuit breaker such that heat transfer causes the transducer to give a visible display of heat, latch engagement, or current draw within the breaker directly through a window in the face of the circuit breaker.