Part identity and key ratings
The Siemens SENTRON 3VA2163-6HL42-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for 63 A continuous current, built around the ETU320 electronic trip unit. That trip unit gives you adjustable overload and short-circuit protection curves — not a fixed thermal-magnetic, so you can coordinate it downstream without swapping the breaker. Breaking capacity is the headline number here: 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3.7 kA at 690 V. That 242 kA at 240 V means it handles high-fault utility feeds or transformer secondaries without needing a current-limiting fuse upstream — it's sized for main or large feeder duty, not branch-only. Insulation voltage rated 800 V. Continuous rating 63 A holds from 40 °C to 70 °C.
Physical fit and panel integration
Dimensions are 86 mm deep, 140 mm wide, 181 mm tall. That 140 mm width on a 4-pole MCCB is standard for the SENTRON 3VA2 frame — it fits the same mounting footprint as other breakers in this series, so a panel laid out for a 3VA2 4-pole will accept this unit without re-drilling the backplate. Front protection is IP40 — fine for a closed panel door. No undervoltage release, no voltage trigger, no ground-fault monitoring on this variant. It's a straight line-protection breaker; if you need those functions, you'd step to a different suffix in the 3VA2 family.