Specification summary
The Siemens SENTRON 5SQ2370-2YA50 is a 3-pole miniature circuit breaker rated 50 A with a C tripping characteristic, designed for 400 V AC, 50 Hz systems. Its 3 kA breaking capacity per EN 60898 covers standard residential and light commercial branch-circuit fault levels — adequate for most final subcircuits where the prospective short-circuit current stays under that threshold. The C-curve (5–10× In magnetic trip) suits inductive loads like small motor starters and lighting banks where inrush could nuisance-trip a B-curve device.