Torque external transformer in neutral SGR 2000A SE SPA-GRCT200 Systeme Electric

External neutral current sensor is used with 3-pole SystemePact ACB circuit breakers. It is designed to measure the current in the working neutral conductor in a TN-S grounding system and is installed by the customer on the working neutral conductor. This neutral current sensor is also used to implement ground fault protection via zero-sequence current (formerly Schneider Electric MASTERPACT ACC 33579).