What this 630 A MCCB carries — and where the rating matters
The Siemens SENTRON 3VA2463-6JP32-0DL0 is a 3-pole molded case circuit breaker rated 630 A continuous at 40 °C, with an ETU550 electronic trip unit for adjustable LSI protection curves. At higher panel temperatures the rating steps down: 600 A at 45 °C, 570 A at 50 °C, and so on to 450 A at 70 °C. The interrupting capacity reaches 242 kA at 240 V and holds 187 kA at 415 V and 440 V, dropping to 40 kA at 690 V — numbers that tell you this breaker is sized for high-fault industrial services, not light commercial.
The breaker measures 138 mm wide by 248 mm tall by 110 mm deep — a footprint that fits standard SENTRON 3VA mounting plates and busbar systems. Maximum power dissipation is 164.5 W, so account for that heat load in the enclosure ventilation or cooling budget.
Trip unit and auxiliary configuration
An undervoltage release (UVR) is integrated, using the 3VA9608-0BB25 coil assembly.