What this 630 A MCCB is and where it fits
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. It is designed for line protection in industrial power distribution panels, sized to handle large feeder or main breaker duty where fault currents can reach into the hundreds of kiloamps. 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.
Integration into the panel
Mounts on a standard DIN rail or direct panel-mount via the four corner slots. 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. The operating range is -25 °C to +70 °C, storage from -40 °C to +80 °C.