Siemens SENTRON 3VA2463-6KP32-0AH0 — 630 A MCCB, 3-Pole, Line Protection
The Siemens SENTRON 3VA2463-6KP32-0AH0 is a molded case circuit breaker (MCCB) rated for 630 A continuous current at 40 °C, with a 3-pole configuration and a maximum breaking capacity of 242 kA at 240 VAC.
Breaking Capacity and Thermal Derating
The 242 kA interrupting rating at 240 VAC drops to 187 kA at 415 V and 440 V, then to 121 kA at 500 V, and 9 kA at 690 V — a steep roll-off above 500 V that matters for 690 V line-side fault coordination. The continuous current derates from 630 A at 40 °C to 450 A at 70 °C in 5 °C steps; at 50 °C the breaker is good for 570 A, at 60 °C for 510 A.