SENTRON 3VA2463-6JQ32-0JA0 — 630 A MCCB for Line Protection
The Siemens SENTRON 3VA2463-6JQ32-0JA0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current of 630 A at 40 °C ambient. This is the thermal base rating; the breaker's electronic trip unit is adjustable from a minimum of 945 A up to a maximum of 5 670 A, so it can be set to protect feeders or large motor loads within that window. The interrupting ratings are voltage-dependent: 242 kA at 240 V, 187 kA at both 415 V and 440 V, 121 kA at 500 V, and 9 kA at 690 V — per the datasheet, these are the maximum fault currents the breaker can safely clear at each voltage level.
Thermal Derating and Power Dissipation
The continuous current rating derates with rising ambient temperature inside the enclosure: 630 A at 40 °C, 600 A at 45 °C, 570 A at 50 °C, 540 A at 55 °C, 510 A at 60 °C, 480 A at 65 °C, and 450 A at 70 °C. Maximum power loss is 162 W at rated load — this figure matters for panel thermal calculations, especially when grouping multiple breakers in a sealed cabinet. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C.
Physical Dimensions and Mounting
Dimensions are 248 mm high, 138 mm wide, and 110 mm deep. The width of 138 mm is the standard 3-pole MCCB footprint for this SENTRON frame size, so it fits existing panel cutouts and busbar arrangements designed for the 3VA series. Depth of 110 mm includes the case body; allow additional clearance for rear terminals and wiring bends.
Integrated Shunt Trip and Communication
This variant includes a shunt trip (STL) auxiliary release for remote tripping via a control signal — useful for emergency-stop circuits or supervisory shutdown. The breaker also supports communication functions (per the product designation), enabling integration with higher-level monitoring systems for status and trip data. The undervoltage release is not fitted on this order code.