What you're looking at
The Siemens 3VA2463-6KP32-0AD0 is a SENTRON molded case circuit breaker (MCCB) rated for line protection, 3-pole, carrying 630 A continuous at 40 °C. It's built for high-fault environments — 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and still 40 kA at 690 V. That's not a number you see on a standard distribution breaker; this is sized for main feeders or large motor branch circuits where fault current runs high.
What the ratings mean for fit
The 630 A rating is at 40 °C ambient. If your panel runs hotter — and most do — you need to derate: 600 A at 45 °C, 570 A at 50 °C, down to 450 A at 70 °C. That's a 28% drop from 40 °C to 70 °C, so if the breaker lives in a hot enclosure, size up accordingly. The interrupting ratings at each voltage level tell you where this breaker can sit in a selective coordination study: at 480 V systems (common in North America) it's still well above typical available fault currents, but at 690 V you're at 40 kA — still useful for many industrial grids.
Panel integration
Dimensions: 248 mm high, 138 mm wide, 110 mm deep. That's a standard MCCB footprint for this class — fits most Siemens SENTRON mounting bases and panel cutouts. The auxiliary contact version is 3 auxiliary switches HQ, so if your control circuit needs status feedback, that's already built in. No undervoltage release, no voltage trigger, no ground fault monitoring — this is a straight line-protection breaker with overcurrent release only. If you need those functions, you're looking at a different variant.