The Siemens SENTRON 3VA2163-5KP32-0HH0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous current, built around the ETU850 electronic trip unit. It carries a 187 kA interrupting capacity at 240 V and 121 kA at 415 V, so it handles high-fault scenarios without cascading upstream — a solid fit for main or feeder protection in a 400 V panel.
The 3VA2163-5KP32-0HH0 carries a shunt trip (STL) auxiliary release and a communication function, plus 2 auxiliary switches and 1 trip alarm switch (HQ). That makes it a step up from a basic thermal-magnetic MCCB — the ETU850 gives you adjustable long-time, short-time, instantaneous, and ground-fault protection curves, which is what you need for selective coordination in a multi-level distribution.
Mounts on a standard DIN rail or panel-mount base. Dimensions are 105 mm wide, 181 mm high, 86 mm deep — fits the same footprint as other 3VA2 frame breakers, so a swap into an existing SENTRON panel doesn't require re-drilling. The line-side and load-side terminals accept copper or aluminum conductors up to the rated cross-section.
Rated insulation voltage is 800 V, and the breaker is rated for continuous operation from -25 °C up to 70 °C ambient. At 55 °C the continuous current derates to 60.6 A, at 60 °C to 58.3 A, and at 70 °C to 53.6 A — plan your enclosure ventilation if the panel runs hot.