RCCB for selective earth-fault protection
Type B+ detects smooth DC residual currents up to 1 kHz, so it's the correct choice for circuits feeding frequency converters, rectifiers, or EV chargers where standard AC/DC-sensitive RCCBs would miss the fault.
Fault-clearing and coordination
Short-circuit current rating (SCCR) is 10 kA per IEC 61008-1, with a maximum permissible series fuse short-circuit current of 100 A. The short-time delay (SIGRES function) allows selectivity with downstream RCCBs: the upstream delayed unit holds during a downstream fault, so only the faulted branch opens.
Snap-on DIN rail (REG) mounting, any orientation. Supply can be connected top or bottom; the SIGRES function (short-time delay) remains active even when the switch is in the off state, so the test circuit stays powered from the top terminals. Grid spacing 60 mm aligns with standard modular panel layouts. Silicon-free construction matters for automotive or aerospace panels where silicone outgassing can contaminate contacts or optics.