The Siemens SENTRON 3VA2463-6KP32-0BH0 is a 3-pole molded case circuit breaker (MCCB) rated for 630 A continuous current at 40 °C, with a maximum breaking capacity of 242 kA at 240 V. The 630 A frame at 40 °C derates predictably across the operating temperature range — 600 A at 45 °C, 570 A at 50 °C, down to 450 A at 70 °C — so the thermal environment of the enclosure directly governs the usable ampacity. This is not a breaker you size by the nameplate alone; the installed derating curve must match the panel's internal ambient.
Dimensions: 248 mm height, 138 mm width, 110 mm depth — fits a typical 600 mm wide distribution section with room for cable entry below. The maximum power loss is 164.5 W at full rated current; that heat must be ventilated or the enclosure derated accordingly. Communication function is built in, supporting integration with higher-level monitoring or energy management systems.