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What is Trip Circuit Monitoring Essentials about?

Trip circuit monitoring (TCM) is used to increase reliability of circuit breaker tripping circuits. There are different levels of TCM, from simply monitoring trip voltage to also checking wiring before and after circuit breaker closing. Traditionally, TCM was provided by electromechanical relays and auxiliary contacts, but now can also be done using optoisolated monitoring inputs. TCM works by passing a small "trickle" current through the trip circuit to prove continuity when the circuit breaker is both ope

Author

salemg82

Language

EN