The Siemens SENTRON 3VA2163-5JP32-0JA0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous current at 40 °C through 70 °C — no derating needed across that ambient span. Breaking capacity hits 187 kA at 240 V AC, 121 kA at 415/440 V, and still delivers 75.6 kA at 500 V. That 187 kA figure at 240 V means it handles high-fault scenarios typical of large transformer secondaries or busway feeds without cascading upstream. Insulation voltage is rated 800 V, so it's comfortable on 480/600 V class systems.
Current setting range and trip unit
The electronic trip unit adjusts from 95 A minimum to 756 A maximum — that's a wide 8:1 ratio, so one breaker frame covers multiple load sizes. The 63 A continuous rating is the frame's base; the adjustable pickup lets you match it to the actual load without swapping hardware. No undervoltage release fitted, but it carries a shunt trip (STL) auxiliary release for remote tripping. Communication function is onboard, so it can report status to a BMS or PLC over the appropriate fieldbus module.
Panel fit and environment
Dimensions are 105 mm wide, 181 mm tall, 86 mm deep — that's a 4.13 by 7.13 by 3.39 inch footprint. Mounts on DIN rail or direct panel; the 3-pole width is standard for a 63 A MCCB frame. Operating temperature range is -25 °C to 70 °C, storage from -40 °C to 80 °C. Power loss maxes at 4 W, so heat buildup in a dense cabinet is minimal. No ground-fault monitoring version here — this is straight line protection.