What this 630 A MCCB delivers in a distribution panel
The Siemens SENTRON 3VA2563-6JP32-0AA0 is a 3-pole molded case circuit breaker rated for a continuous current of 630 A, with no derating needed across the full 40 °C to 70 °C ambient range — the same 630 A holds at every temperature step in the spec table. That thermal stability simplifies panel sizing: you don't have to oversize the frame for a hot enclosure. Breaking capacity runs from 242 kA at 240 V down to 73.5 kA at 690 V, which gives a site electrical engineer headroom for high-fault installations — think transformer secondaries or large motor control centers where SCCR coordination matters. The ETU550 electronic trip unit provides adjustable neutral protection (OFF, 20 % to 160 % of the phase setting) and a communication function for integration into a plant monitoring system — useful for a brownfield retrofit where you want breaker status on the SCADA without adding external aux contacts.
Dimensions are 320 mm height, 210 mm width, and 120 mm depth. Front IP40 protection suits indoor panel mounting. Maximum power loss is 144 W.