Siemens SENTRON 3VA2463-6JP32-0DH0 — 630 A MCCB for Line Protection
The Siemens 3VA2463-6JP32-0DH0 is a SENTRON molded case circuit breaker (MCCB) rated for 630 A continuous current at 40 °C, with a 3-pole configuration and an interrupting capacity of 242 kA at 240 V. It is designed for line protection and includes an undervoltage release (UVR) and a communication function, making it suitable for integration into monitored or automated power distribution systems. The breaker carries a trip indicator and two auxiliary switches plus one trip alarm switch (HQ), providing status feedback for remote monitoring or PLC inputs.
Key Ratings and What They Mean for Fit
The 630 A continuous rating at 40 °C is the headline figure for sizing — this breaker handles full-load current up to that level in a 40 °C ambient. Above that, the thermal derating curve applies: 600 A at 45 °C, 570 A at 50 °C, down to 450 A at 70 °C. If your panel ambient runs hot, use the derated value, not the 40 °C number. Interrupting capacity is 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 9 kA at 690 V. At typical 400 V-class industrial voltages, the 187 kA figure gives substantial fault-current headroom for most distribution panels. The drop to 9 kA at 690 V means this breaker is not intended for 690 V main feeders unless the available fault current is well below that level. Adjustable current pickup range: 945 A minimum to 5,670 A maximum.
Physical Integration and Panel Fit
Dimensions are 248 mm high, 138 mm wide, and 110 mm deep. The 138 mm width is standard for a 3-pole MCCB in this frame size, fitting typical panel cutouts and busbar spacing. Maximum power loss is 164.5 W — account for this heat dissipation in the enclosure thermal calculation, especially if the breaker is enclosed with other heat-generating devices. Operating temperature range is -25 °C to 70 °C, storage from -40 °C to 80 °C.