This is an additional current transformer module of 630A rating for 3 poles ComPact NSX630 devices.This module enables direct connection of a measurement device such as an ammeter.The module is installed directly on the downstream circuit breaker power terminals.The current rating is 630A.The current at the secondary winding is 5A.The power consumption is 8VA.The class accuracy is 4.5.There is a class II insulation level between the front face and the power circuits.The protection degree is IP40.