Breaking capacity runs 100 kA at 240 V, 25 kA at 400 V, 5 kA at 500 V, and 2 kA at 690 V — enough for most industrial distribution panels with a transformer-fed 400 V bus. The gL/gG fuse backup ratings at 400 V (63 A), 500 V (50 A), and 690 V (50 A) tell you the maximum upstream fuse that still lets the breaker clear a fault within its rated short-circuit capacity.
Clearance requirements: 50 mm above and below, 30 mm to the side, 0 mm forward and backward — the forward zero means it can sit flush against a gland plate or backplane without derating. Terminal capacity accepts 2×(1…2.5 mm²) or 2×(2.5…10 mm²) solid or stranded, with M4 main contact screws.