What this MCCB is and what it does
The Siemens 3VA1163-5ED32-0AC0 is a SENTRON molded case circuit breaker (MCCB) designed for line protection in distribution panels. It's a 3-pole unit rated at 63 A continuous at 40 °C, using a TM210 thermal-magnetic trip unit — that's the fixed thermal and magnetic release with a 10x Ii magnetic pickup, so it handles moderate inrush without nuisance tripping on motor starts or transformer energization. The interrupting capacity is what really sets this frame apart: 187 kA at 240 V, 121 kA at 415 V, and still 75.6 kA at 440 V. That's a high-interrupting (HI) version of the 3VA1, sized for installations where available fault current is substantial — think industrial switchboards with large upstream transformers.
Ratings and what they mean for your panel
The 63 A rating holds flat from 40 °C through 50 °C — no derating needed in a typical ventilated enclosure. At 55 °C it drops to 62 A, at 60 °C to 61 A, and at 70 °C to 58 A. That's a gentle slope, so if your panel ambient runs warm, you still have most of the capacity. The rated insulation voltage is 800 V, giving headroom for 480 V or 600 V class systems. Power loss is listed at 17.3 W maximum — that's per-device heat to account for in your thermal budget. The operating temperature range is -25 °C to 70 °C, storage from -40 °C to 80 °C, so it's fine for unheated enclosures in temperate climates.
Physical fit and panel integration
Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep — a standard 3-pole MCCB footprint that drops into most switchboard or panelboard mounting bases. It ships with 2 auxiliary switches (HQ design) for status feedback to a PLC or indication lamp. The TM210 trip unit is fixed — no interchangeable rating plugs, so what you order is what you get. No undervoltage release, no shunt trip, no ground-fault monitoring on this variant. If you need those, you're looking at a different suffix in the 3VA1 family.