Cam Switch

TNC (Trip Neutral Close) switch is 3 position switch, mainly used for locally Breaking or closing of circuit breaker during maintenance purpose. When TNC switch is at close position then it put Circuit Breaker in operating condition by energizing the closing coil of the CB while in Trip position CB goes in OFF condition as trip coil of CB get energies. TNC switch comes with Spring Return Mechanism as it just momentarily energies the coils of CB. Ziegler TNC switch comes with a current range of 25A,32A and working mechanism according to IEC 60947-1,2 & 5.