The Siemens 5SU1356-1DV06 is a combined residual-current device and miniature circuit breaker (RCBO) in a single 1+N-pole unit. It provides Type AC earth-leakage protection at 30 mA sensitivity and overcurrent protection with a C-curve trip characteristic rated at 6 A, all within a 6 kA breaking capacity. The pig-tail connection simplifies wiring in distribution boards where neutral bars are pre-routed.
The 70 mm depth (D=70MM) fits standard flush-mount distribution boards. The pig-tail neutral connection is factory-fitted, so the installer connects only the phase line to the busbar and the pig-tail to the neutral bar — no additional neutral link wiring needed. The Type AC classification means it detects sinusoidal AC residual currents only; for pulsating DC or mixed-frequency faults, a Type A or Type F device would be required.