The Siemens SENTRON 3VA2163-5HN36-0JC0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous current across the full ambient temperature range from 40 °C to 70 °C — no derating needed up to that ceiling. Interrupting capacity is 187 kA at 240 VAC, 121 kA at 415/440 VAC, 75.6 kA at 500 VAC, and 3.7 kA at 690 VAC. That spread tells you this breaker is built for high-fault industrial main or feeder duty, not just branch protection.
What the ratings mean for fit
The 63 A frame holds solid through 70 °C ambient — if your panel runs hot near a drive or transformer, this breaker won't trip early. The 187 kA at 240 VAC is a 100 % rated interrupting capacity, not a conditional short-circuit rating; it clears a bolted fault at that level without rupturing. At 690 VAC the 3.7 kA figure drops sharply — verify your system voltage against the curve before specifying this frame for 690 V service.
Integration and mounting
Dimensions are 181 mm high, 105 mm wide, 86 mm deep — a standard SENTRON 3VA2 frame footprint. It ships with two auxiliary switches (HQ type) and a shunt trip (STL) release pre-installed, so you get alarm signaling and remote trip out of the box. The 3-pole design fits DIN-rail or panel-mount enclosures; no communication module on this variant, so it is a straight electromechanical breaker for hardwired protection schemes.