1180 Thermal Overcurrent Circuit Breakers E-T-A Circuit Breakers 1180 Thermal Overcurrent Circuit Breakers are miniaturized single-pole thermal circuit breakers with optional switching function (push-push actuation). E-T-A 1180 Circuit Breakers feature a reliable snap-acting and trip-free mechanism. The series is approved to CBE standard EN/IEC 60934. The blade terminals are designed to fit into sockets for rail mounting. 1180 Circuit Breakers are designed for protection of loads in power distribution systems in control cabinets and process control.