Motor protection circuit breaker, 6.3 A, 100 kA
Rated at 6.3 A at 480 V and 6.3 A at 600 V, it handles the full-load current of a 3 hp motor at 460/480 V or a 5 hp motor at 575/600 V, with a breaking capacity of 100 kA at 240 V, 400 V, and 500 V AC — enough to interrupt a bolted fault on most industrial secondary distribution without upstream fuses needing to clear.
Body dimensions are 45 mm wide, 97 mm deep, 119 mm tall, with 50 mm clearance required above and below, 30 mm at the sides, and zero clearance forward or backward — fits a standard 45 mm slot on the rail, leaving the adjacent positions open for contactors or auxiliary blocks.