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: Cannot be used in conjunction with the NZM..-XR.. remote operator. If the shunt release is live, touching the main switch contacts is safely prevented when attempting to switch it on. Leading auxiliary contact when switching on and off (manual operation): approx. 20ms. The shunt release cannot be installed at the same time as the leading auxiliary switch NZM..-XHIV.. or the undervoltage release NZM..-XU.. Can be used for: NZM2(-4), N(S)2(-4), NZM3(-4), N(S)3(-4)