The Siemens 3VA1163-5EE32-0KH0 is a 3-pole SENTRON molded case circuit breaker (MCCB) rated 63 A at 40 °C, with a 187 kA interrupting capacity at 240 V AC — that's the headline number that tells you it handles high-fault utility feeds or transformer secondaries without upstream fuses. The thermal derating curve is flat from 40 °C to 50 °C (still 63 A), then drops to 58 A at 70 °C — useful to know if this lands in a hot panel next to drives or transformers.
Panel fit and physical integration
Footprint is 76.2 mm wide by 130 mm tall by 70 mm deep — a standard 3-pole MCCB width that fits most DIN-rail or panel-mount enclosures without re-drilling. The 70 mm depth leaves room for rear-access busbars or cable ladders behind the breaker.