Optional accessories for the NZM circuit breaker series offer an extensive portfolio of application options for worldwide use. Installation is flexible and easy thanks to modular function groups. Notes: Including connection designation for main switch. Already included in the main switch kit. Marking of the feed side of the switch is possible. Can be used for: NZM3(-4), PN3(-4), N(S)3(-4), NZM4(-4), N(S)4(-4)