This closing coil is used for the instantaneous remote tripping of the MasterPact NT/NW circuit breaker. In conjunction with an MX opening coil and an MCH motor operator, the MasterPact can be remotely controlled. The tripping is instantaneous via a working current. Instantaneous closing coil XF 277V AC for NT withdrawable unit. This tripping coil can only be ordered in conjunction with a configured circuit breaker.