Three pole ground fault circuit interrupter for low voltage distribution network, has transformer and conductors fixed to armature to form assembly that is incorporated in main body's case, where conductors are insulated from each other

摘要

The interrupter has a null phase current transformer (5) and primary conductors fixed to a unit assembling armature (18) for forming an assembly that is incorporated in a main body's case. The conductors act as stranded wires (15). The armature is molded in resin and provided with retaining parts for retaining the stranded wires of respective poles such that the wires extend along a prescribed cabling path. The primary conductors penetrating in the transformer are insulated from each other. Locking parts position and retain the current transformer in prescribed position.