FI-Block Acti 9 Vigi NG125. 4-pole, nominal current 125A, nominal residual current 300mA, type A, operating voltage (Ue) 400-415V AC, insulation voltage (Ui) 690V AC. Can be mounted on the right-hand side of the NG125 series circuit breaker. Tripping due to residual current is indicated by a red, mechanical indicator on the knob. Terminals IP 20. Test button for regular function testing. Technology of the trip unit - thermomagnetic. Additional auxiliary modules that can be added in series (optional) - shunt release (MXV) and fault signaling switch (SDV). The Vigi NG125 FI-Block meets the following standards - IEC/EN 61009-1. This series is also VDE certified!