Schneider Electric A9Z66440 Acti9 iID - Residual Current Circuit Breaker - 4P - 40A - 500mA - B-SI type

The Acti 9 iID residual current circuit breaker is all-current sensitive. It features a four-pole design, a nominal current of 40A, a type B-SI, a nominal fault current of 500mA, an operating voltage (Ue) of 400V AC at 50Hz, and an insulation voltage of 500V AC. It has a flicker-free switching mechanism for reduced wear and tear on contacts. It includes a mechanical VisiTrip fault indication on the front to show trip events caused by residual currents. The VisiSafe contact indication assures safety and indicates the absence of voltage on the output side when displayed in green. A test button is available for regular functional checks. Dual terminal blocks allow for cable or busbar connections on both sides. Easy removal of individual devices from an installed busbar, thanks to the accessible front mounting element. Additional auxiliary modules can be mounted as an option, such as an undervoltage release (iMN), overvoltage release (iMSU), shunt trip (iMX), status auxiliary switch (iOF), and fault signal switch (iSD). Type B-SI incorporates SI technology, providing enhanced resistance to electrical disturbances. It protects against smooth DC residual currents in single or three-phase supply networks caused by frequency converters, inverters & emergency power supplies. Color RAL 9003. Meets the following standards: IEC/EN 61008-2-1, IEC/EN 62423, IEC 61543, VDE 0664.