Motor protection circuit breaker, 6.3 A, CLASS 10 — SIRIUS 3RV1021-1GA10-ZW96
Its 6.3 A continuous current rating and CLASS 10 trip characteristic mean it protects standard induction motors against overload and short-circuit, tripping fast enough to keep the motor winding below its thermal limit during a stall or jam. Breaking capacity is 100 kA at 240 V, 400 V, and 500 V AC, dropping to 6 kA at 690 V AC. The 690 V rating is lower but still covers most 690 V motor circuits where the fault current is typically lower. Width is 45 mm, depth 96 mm, height 97 mm. Zero clearance needed at the sides or rear, so it can be packed tight in a panel. Screw terminals on the main circuit accept 2x (1 … 2.5 mm²) solid or stranded, or 2x (2.5 … 6 mm²). Shock resistance is 25 g for 11 ms. Mechanical endurance of the main contacts is 100,000 operations typical.