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: Type contains parts for a switch side at the top or bottom for 3- or 4-pole switches. Installation outside the switch housing. Attachment of the NZM1(-4)-XKSA cover required (included in delivery). Can be used for: NZM1(-4), PN1(-4), N(S)1(-4)