The Siemens 3VA1163-6EE36-0AA0 is a SENTRON molded case circuit breaker (MCCB) in the 3VA1 series, designed for line protection. It's a 3-pole unit rated 63 A at 40 °C, with a TM220 thermal-magnetic overcurrent release — that's a fixed thermal and fixed magnetic trip, no adjustment dials, so what you spec is what you get. The interrupting ratings are substantial: 154 kA at 415 V, 220 kA at 240 V, and still 17 kA at 690 V, which gives solid SCCR headroom for most industrial distribution panels without needing a current-limiting fuse upstream.
Interrupting and thermal performance
The 154 kA at 415 V is the rating that matters for European and much of Asian 400 V class systems — that's well above typical utility fault levels, so you're covered for high-fault scenarios without cascading coordination issues. The thermal derating curve is flat up to 50 °C (still 63 A), then drops only 2 A by 55 °C and 5 A by 70 °C, meaning the breaker runs cool in a warm panel. Power loss maxes at 17.3 W, which is manageable for enclosure heat calculations.
Panel fit and integration
Dimensions are 76.2 mm wide, 130 mm tall, 70 mm deep — a standard 3-pole MCCB footprint that drops into most SENTRON or third-party distribution blocks without panel rework. Front IP40 protection means it's fine for enclosed panels but not washdown environments. The TM220 release has no undervoltage release, no shunt trip, no communication module — it's a plain-vanilla line protection breaker, which is exactly what you want for a straightforward feeder or subfeed application where you don't need remote tripping or metering.