What this 3VA2463-6JQ32-0BA0 is and what it does
The Siemens SENTRON 3VA2463-6JQ32-0BA0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection. It carries a continuous current of 630 A at 40 °C, with a thermal derating curve down to 450 A at 70 °C — that's the figure to use if the breaker sits in a warm enclosure or next to other heat sources. The interrupting capacity hits 242 kA at 240 V and 187 kA at 415 V, so it handles high-fault scenarios without cascading upstream. An integrated undervoltage release (UVR) is built in, and the breaker supports communication functions for integration into a monitored distribution system.
Ratings that decide fit
The 630 A full-scale value is the breaker's frame rating; the adjustable thermal-magnetic trip unit has a minimum setting of 945 A and a maximum of 5670 A for the magnetic (short-circuit) pickup. That wide adjustment band lets you coordinate with downstream breakers for selectivity. The 164.5 W maximum power loss matters for panel ventilation — if you're packing multiple breakers in a closed cabinet, that heat adds up. Dimensions are 248 mm high, 138 mm wide, 110 mm deep, so it fits standard SENTRON mounting footprints.
Deployment context
This MCCB mounts in a panel on a standard SENTRON base plate or DIN rail adapter kit. The 3-pole design with UVR is typical for main or feeder breakers in industrial switchboards where undervoltage protection is required by code or machine safety circuits. The communication function allows remote monitoring via a compatible bus system — useful for a plant-wide power management scheme.