Square 140M Shunt Trip Aux Circuit Breaker

Square 140M Shunt Trip Aux Circuit Breaker is a Bulletin 140M motor-protective device that adds remote-trip capability and status signaling to a standard 140M frame, rated for up to 600 V AC and up to 600 A. It combines a shunt-trip coil with an auxiliary switch, enabling external tripping and control-circuit feedback for safety-critical shutdowns. Shunt-trip options are available in left-side mounted configurations for 415 V 50 Hz and 480 V 60 Hz systems, while front-mounted auxiliary contacts provide local trip indication when paired with compatible base breakers. This configuration is suited for motor protection schemes in control gear assemblies and machines where remote trip or interlock functionality is required.