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 one switch side at the top or bottom for 3- or 4-pole switches. Insulation/touch protection when connecting cable lugs, rails or using tunnel terminals. Included in the set for tunnel terminals. When using insulated conductor material, protection class IP1X. Can be used for: NZM3(-4), PN3(-4), N(S)3(-4)