CM3 molded case circuit breaker (MCCB) with thermal overload alarm but non-release function was introduced. It integrates part function of thermal overload relay and function of MCCB.
"FTa61O-WG and 620-WG controllers feature molded case, thermal magnetic trip circuit breakers. Toggle operators protrude through the inner door for ease of operation."
Molded case circuit breaker a molded case circuit breaker automatically interrupts the current flowing through it when the current exceeds the trip rating of the breaker.
automatic molded case air circuit breaker