The SENTRON 5SQ2670-0KA32 is a 4-pole miniature circuit breaker (3P+N) with a 32 A rated current at AC and a C tripping characteristic, meaning it's sized for moderate inrush loads like small motor starters or lighting banks where the start-up surge is higher than a B-curve would tolerate but not as high as a D-curve demands. Its 3 kA breaking capacity per EN 60898 at 400 V AC is the standard domestic and light-commercial fault-interruption rating — adequate for most sub-distribution boards where the prospective short-circuit current stays under that threshold. The neutral conductor is switched (3P+N), so it opens all live conductors on a fault, which is required in some regional wiring codes and for certain load types where an unswitched neutral could leave a circuit energized.
Snaps onto DIN rail, occupies 3 width units, with an installation depth of 55 mm — standard for this class of MCB. Rated for overvoltage category 3 and energy limiting class 3, which tells the panel designer it provides the energy-limiting performance expected for final-circuit protection in fixed installations.