What this 3VA2 frame carries
The Siemens 3VA2463-6KP32-0HA0 is a SENTRON molded case circuit breaker (MCCB) rated for 630 A continuous at 40 °C, with a 3-pole construction designed for line protection. It carries a shunt trip (STL) auxiliary release — meaning a remote signal can trip the breaker without an undervoltage condition, useful for emergency-off circuits or interlocked distribution. Interrupting capacity is the headline here: 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 9 kA at 690 V. That 242 kA at 240 V tells you this breaker is built for high-fault utility or transformer-fed panels where the available short-circuit current is extreme — not a light-duty feeder. Thermal derating is published across the operating range: 630 A at 40 °C, stepping down to 450 A at 70 °C. If your panel ambient runs hot — say 55 °C inside a non-ventilated enclosure — you're looking at 540 A continuous before the trip curve shifts. Plan the load accordingly.
Panel fit and mounting
Dimensions: 248 mm tall, 138 mm wide, 110 mm deep. That 138 mm width is the standard 3-pole MCCB footprint for this SENTRON frame size — it occupies three 45 mm-wide pole positions on the mounting plate. The 110 mm depth means it clears a standard 200 mm deep enclosure with room for rear busbars or cable lugs. No trip indicator on the front face, but the voltage trigger (shunt trip) is present. If your spec calls for a visible trip flag, you'll need to add an auxiliary switch block — this unit ships without one.
Environmental limits
Operating temperature range: -25 °C to 70 °C. Storage range: -40 °C to 80 °C. The storage minimum is the one that matters if this sits in an unheated warehouse through a northern winter — it's fine down to -40 °C before installation.