Optional accessories for the NZM circuit breaker series offer an extensive portfolio of application options for worldwide use. Assembly is flexible and easy thanks to modular function groups. Notes: Type contains parts for two terminal points at the top or bottom for 3- or 4-pole switches. Standard equipment for tunnel terminal. Protection class IP1X. NZM-XSTK cannot be combined with IP2X finger protection NZM3(-4)-XIPK or NZM4(-4)-XIPK. Height or thickness of the control line connections, NZM-XSTK = 2mm, NZM-XSTS = 2mm. Can be used for: NZM3(-4), PN3, N(S)3(-4)