The Siemens SENTRON 3VA2463-5HN32-0JA0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current Iu of 630 A. Its interrupting capacity hits 187 kA at 240 V, 121 kA at 415/440 V, 75.6 kA at 500 V, and 17 kA at 690 V — figures that give selectivity headroom for high-fault utility feeds or transformer secondaries. The ETU350 electronic trip unit handles the overcurrent release; a shunt trip (STL) auxiliary release is integrated for remote tripping.
Ratings and what they mean for panel fit
The 630 A rating at 40 °C derates to 520 A at 70 °C — a 17 % drop that matters when the breaker sits in a crowded, poorly ventilated enclosure. The 800 V rated insulation voltage (Ui) covers 480 V and 600 V class systems with margin. Dimensions are 248 mm high, 138 mm wide, 110 mm deep, so it fits standard SENTRON 3VA mounting footprints; verify the lug kit and bus bar spacing against your existing panel layout.
Integration notes
Mounts on a DIN rail or direct panel. The ETU350 trip unit is field-configurable for LSI curves; the shunt trip (STL) requires a separate control voltage. No auxiliary contacts or communication module are built in — add the 3VA9688-0BL32 auxiliary trip block if you need remote status. The maximum power loss of 162 W must be factored into enclosure thermal calculations.