Interrupting capacity and fit
The 3VA1163-5EF42-0AA0: The interrupting rating is the headline here: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at both 500 V and 690 V. That 187 kA at 240 V means it handles high-fault scenarios downstream of a large transformer without cascading upstream. The TM240 overcurrent release is thermal-magnetic, fixed-trip — no adjustment dial, so set your coordination study before you bolt it in.
Panel integration
Mounts on a DIN rail or direct-panel. Width is 101.6 mm (4 in), depth 70 mm (2.76 in), height 130 mm (5.12 in) — that 101.6 mm width is the critical dimension for multi-pole spacing in a distribution board. IP40 on the front means it's protected against solid objects over 1 mm but not sealed against moisture; keep it inside the enclosure, not in a washdown zone. No undervoltage release, no communication function, no ground-fault monitoring on this variant — it's a straight line-protection breaker.