63 A MCCB with full-rated breaking capacity across the voltage range
The Siemens SENTRON 3VA2163-6HN36-0HL0 is a 3-pole molded case circuit breaker rated for 63 A continuous current across the full 40 °C to 70 °C ambient range — no derating needed as the panel warms up. Breaking capacity runs 242 kA at 240 V, 187 kA at 415/440 V, 121 kA at 500 V, and 3.7 kA at 690 V, so the same unit handles high-fault commercial mains and lower-fault industrial feeds without a frame-size jump. Design is line protection, meaning the trip curve and accessories are set for feeder and main breaker duty rather than motor or generator protection. The auxiliary switch complement — 2 auxiliary switches plus a trip alarm and an electrical alarm switch — gives the panel builder status feedback without adding a separate interface relay.
Panel fit and mounting
Dimensions: 105 mm wide, 181 mm high, 86 mm deep. Three-pole footprint matches the SENTRON 3VA family cutout.
Auxiliary releases and accessories
Fitted with a shunt trip release (STL) for remote tripping. The auxiliary switch configuration — 2 auxiliary switches + 1 trip alarm switch + 1 electrical alarm switch HQ — provides separate dry contacts for status, trip indication, and remote annunciation. No undervoltage release and no ground-fault monitoring on this variant. Power loss is 4 W maximum, negligible for panel thermal budgeting. Operating temperature range -25 °C to 70 °C; storage range -40 °C to 80 °C.