Siemens SENTRON 3VA2163-5HN32-0AF0 — 63 A MCCB with ETU350 trip unit
The Siemens 3VA2163-5HN32-0AF0 is a SENTRON 3VA2 molded case circuit breaker rated for a continuous current Iu of 63 A across a 40 °C to 50 °C ambient, with a slight derating curve starting at 55 °C (60.6 A) down to 53.6 A at 70 °C. Breaking capacity is the headline number here: 187 kA at 240 V AC, 121 kA at 415 V and 440 V, 79 kA at 500 V, and 4.25 kA at 690 V. The auxiliary contact set is 1 NO + 1 NC with a trip alarm switch (HQ designation), giving remote status and trip indication without needing a separate module.
Dimensions are 105 mm wide, 181 mm tall, 86 mm deep — standard 3-pole MCCB footprint for the SENTRON 3VA2 family. The 86 mm depth matters for shallow enclosures; check gland-plate clearance if you're fitting it into a retrofit panel where the backplane depth is tight.