ID residual current circuit breaker Multi 9 OEM GFP, 260mA UL 1053 / 300 mA IEC/EN 61008. 4-pole, nominal current 40A, type A-SI, operating voltage (Ue) 230-240V IEC/EN 61008-1 / 480Y/277V UL 1053, insulation voltage (Ui) 440V. ID residual current circuit breakers offer protection against electric shock from direct and indirect contact and protection of systems in the event of insulation faults. They also have high electrical immunity to transient leakage currents and offer improved protection against earth faults. Type A-SI earth fault devices are ideal for damp environments or environments contaminated by aggressive substances. Trip unit technology - differential current. The ID residual current circuit breaker complies with the following standards - IEC/EN 61008-1, UL 1053.