630 A MCCB with 330 kA interrupting capacity
The Siemens SENTRON 3VA2463-7HN32-0AF0 is a 3-pole molded case circuit breaker rated for 630 A continuous current at 40 °C, with a maximum interrupting capacity of 330 kA at 240 V AC. That 330 kA figure drops to 242 kA at 415 V and 440 V, then to 187 kA at 500 V, and 9 kA at 690 V — so the available fault current at the installation point dictates which voltage tap you use for the interrupting rating. The breaker carries a current-production lifecycle status, meaning it remains in the active Siemens catalog and is available through the authorized channel.
Continuous current derates with ambient temperature: 630 A at 40 °C, 612 A at 45 °C, 593 A at 50 °C, 575 A at 55 °C, 557 A at 60 °C, 538 A at 65 °C, and 520 A at 70 °C. Maximum power loss is 162 W. For panel builders, that derating curve means the breaker must be installed with adequate ventilation or spacing if the enclosure ambient runs above 40 °C — a common oversight when packing multiple high-current breakers into a sealed cabinet.
Physical footprint and auxiliary configuration
Dimensions are 110 mm deep, 138 mm wide, and 248 mm high. The basic switch variant is 3VA2463-7HN32-0AA0. For a panel retrofit, verify the 138 mm width clears the adjacent device spacing — this is a full-size frame, not a compact MCCB.
Environmental and operating limits
No communication function or voltage trigger is fitted on this order code.