The Siemens 3VA2163-5MN32-0AC0 is a SENTRON molded case circuit breaker (MCCB) rated for 63 A continuous current across the full 40 °C to 70 °C ambient range, meaning no derating needed in a warm panel — that 63 A holds at 70 °C. It is a 3-pole unit designed specifically for motor protection, with built-in phase failure detection so it trips on a lost phase before the motor burns out.
Breaking capacity and selectivity
This MCCB delivers 187 kA interrupting capacity at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V. For a 480 V panel, the 75.6 kA SCCR gives headroom for high-fault installations — useful when coordinating with upstream feeders in a selective coordination study. The 3.7 kA at 690 V is the weak point; if your system runs at 690 V, verify the available fault current stays under that.
Physical fit and panel integration
Dimensions are 181 mm high, 105 mm wide, 86 mm deep. That 105 mm width is standard for a 3-pole MCCB in this frame size — it fits the usual DIN-rail or panel-mount footprint. The 86 mm depth leaves room for rear-access wiring in a typical 200 mm deep enclosure. Two auxiliary switches (HQ design) are built in, so no separate add-on block needed for status feedback.
Environmental and operating limits
Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. Maximum power loss is 4 W — negligible for panel thermal budgeting. No undervoltage release, no ground-fault monitoring, no communication function on this variant. Trip indicator is not fitted, so visual trip status requires an external indicator or the auxiliary switch feedback.