| Item Description | DOEPKE residual current circuit-breakers 4-POLE, 63 A, 0.03 A, type b SK, 60 HZ/290 V, 500 V, n left / residual current circuit-breakers (RCCB) switch the power supply off if dangerous high residual currents occur. Type b switches are AC-DC sensitive at frequencies of 0 HZ (smooth residual currents) to 150 KHZ. They have increased resistance to surge currents and lightning. For residual current circuit-breakers with characteristic curve SK, the frequency response of the tripping current is designed so that residual currents with high frequencies, such as in the clock frequency range for frequency converters, as opposed to the rated frequency are detected with significantly reduced sensitivity. Undesired trips caused by leakage currents CAN therefore be widely avoided. However, fire protection depending on the rated residual current of the switch (0.03 A, 0.1 A or 0.3 A) is only provided |