This accessory is a terminal extension for 4-pole ComPact NSX 100/160/250 circuit breakers and ComPact INS/INV250 load break switches. They are screwed onto the circuit breaker terminals to increase the distance between the poles from 35 mm to 45 mm. The rated current is up to 250 A. These terminal extensions are supplied with flexible phase separators for insulation. They are supplied as a set of 4 pieces.