Line protection MCCB with shunt trip and auxiliary switches
The Siemens 3VA2163-5HN36-0HC0 is a SENTRON molded case circuit breaker (MCCB) rated for line protection, with a continuous current of 63 A across the full ambient temperature range from 40 °C to 70 °C — no derating needed up to that ceiling. Its 3-pole design carries a breaking capacity of 187 kA at 240 V AC, 121 kA at 415/440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V, giving you selectivity headroom for high-fault installations like transformer secondaries or large motor control centers. The unit includes an integrated shunt trip (STL) and two auxiliary switches (HQ), so it arrives ready for remote tripping and status feedback without adding accessory modules.
Physical fit and integration
The breaker measures 105 mm wide × 181 mm high × 86 mm deep — a standard SENTRON 3VA2 footprint that fits existing Siemens panel cutouts and busbar systems. The depth of 86 mm (3.39 in) leaves clearance for rear-access wiring in enclosures with shallow gland plates. Operating temperature range is -25 °C to 70 °C; storage from -40 °C to 80 °C. Maximum power loss is 4 W, so heat buildup in a sealed cabinet is minimal.