Shunt Trip Breaker Wiring Diagram | Jr Electric School

Shunt coil and auxiliary block in molded case circuit breaker The shunt coil is responsible for controlling the opening and closing of the circuit breaker contacts. When an abnormal condition, such as an overcurrent or short circuit, is detected, the shunt coil receives a signal to trip the circuit breaker, causing the contacts to open and interrupt the electrical circuit. This action protects the circuit and connected equipment from damage caused by excessive current, while the auxiliary block