The SENTRON 5SQ2370-0KA06 is a 3-pole miniature circuit breaker (MCB) with a C tripping characteristic, rated at 6 A continuous current at 400 V AC, 50 Hz. Its 3 kA breaking capacity per EN 60898 means it can safely interrupt fault currents up to that level without upstream damage — adequate for final subcircuit protection in residential or light commercial distribution boards where the prospective short-circuit current stays under 3 kA.
The breaker occupies 3 width units (roughly 54 mm on a standard DIN rail) and installs at a depth of 55 mm, which fits common enclosure depths without crowding gland plates or busbar risers.