The Siemens SENTRON 3VA2163-6HN36-0KH0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. It's designed for line protection, meaning it sits at the incoming feeder or main distribution point in a panel, not downstream on a motor branch. Breaking capacity is 242 kA at 240 V, dropping to 187 kA at 415/440 V, 121 kA at 500 V, and 3.7 kA at 690 V — so it handles high fault currents on low-voltage mains but is not a 690 V workhorse.
Physical envelope: 105 mm wide, 181 mm tall, 86 mm deep — a standard 3-pole MCCB footprint that fits most Siemens SENTRON panelboards and switchboards without re-drilling. The unit ships with a shunt trip (STL) release and a complement of 2 auxiliary switches plus 1 trip alarm switch (HQ), so remote tripping and status feedback are wired in from the factory. No undervoltage release, no ground-fault monitoring, no communication function — this is a straightforward line-protection breaker with remote trip capability.