630 A MCCB with adjustable trip and high interrupting capacity
The Siemens SENTRON 3VA2463-7HL32-0JC0 is a 3-pole molded case circuit breaker rated for 630 A continuous current at 40 °C, with an adjustable thermal-magnetic trip unit covering 945 A to 5670 A. Per the datasheet, the interrupting capacity reaches 330 kA at 240 V AC, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 9 kA at 690 V — so the breaker is sized for high-fault-current service-entrance or distribution applications where the available fault current is known to be substantial. The continuous current rating derates across the operating temperature band: 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. It is configured for line protection, not feeder or motor protection, so the trip curve and accessories match a main-breaker or distribution role.
Mounting footprint: 138 mm wide, 248 mm tall, 110 mm deep. The 110 mm depth (4.33 in) is the dimension from the mounting plane to the furthest projection — relevant for enclosure depth clearance and bus-bar reach. Width of 138 mm (5.43 in) determines the DIN-rail or backplate spacing between adjacent breakers.
Maximum power loss is 162 W at rated current. This figure drives the enclosure ventilation or derating calculation when multiple breakers are ganged in a sealed panel — the cumulative heat load must stay within the enclosure's dissipation rating.