Residual current circuit breaker ID type B, Acti 9 series. 4-pole, 125A, 30mA. Operating voltage: 230/400 V AC, 50 Hz. Surge current resistant up to 3 kA. Protection of persons and 3-phase installations even in the case of smooth DC residual currents, caused by e.g. 3-phase frequency converters, battery chargers, emergency power supplies for computer tomographs. Electrical switching status display: by means of the Ofsp auxiliary switch to be fitted to the left of the residual current device. This is equipped with two changeover switches to display the 'open' and 'closed' switching positions of the residual current device.
