Motor protection circuit breaker, size S0, Class 10, 6.3 A AC-3
The breaker is rated for AC-3 duty at 6.3 A at 400 V, with a trip class of CLASS 10, meaning it will trip within 10 seconds at 7.2× the thermal setting — fast enough to protect standard induction motors during locked-rotor conditions. Breaking capacity is 100 kA at 240 V, 400 V, and 500 V AC, dropping to 6 kA at 690 V AC. No ground fault detection on this variant.
Any mounting position is allowed. That spring-cage design speeds up panel wiring — no screw torque to check, just strip and push. Clearance distances: 50 mm upwards and downwards, 30 mm to the side, zero forwards or backwards. That 50 mm top clearance is the one to watch when stacking breakers in a row — leave room for the arc chute to vent.