Its interrupting capacity hits 330 kA at 240 V, 242 kA at 415/440 V, 187 kA at 500 V, and 3.7 kA at 690 V — that 330 kA at 240 V is the figure a site electrical engineer checks first for selectivity on a high-fault transformer secondary; the drop to 3.7 kA at 690 V means this is a 240–500 V workhorse, not a 690 V main.
Dimensions: 86 mm deep, 105 mm wide, 181 mm tall — the 105 mm width is the critical number for a multi-breaker lineup on a DIN-rail or panel-mount backplate; it matches the standard SENTRON 3VA2 footprint, so a panel designed for the 3VA2 family accepts this without drilling new holes.