Optional accessories for the circuit-breaker series NZM offers a comprehensive portfolio of application options for use world wide. The mounting is always flexible and easy thanks to the modular function groups. Inscription: main switch – open only in the 0 position (German / English). Can be used for: NZM1(-4), PN1(-4), N(N/O)1(-4), NZM2(-4), PN2(-4), N(N/O)2(-4), NZM3(-4), PN3(-4), N(N/O)3(-4), NZM4(-4), N(N/O)4(-4)