What this MCCB delivers in the panel
The Siemens SENTRON 3VA2163-6HL36-0HL0 is a 3-pole molded case circuit breaker rated for 63 A continuous current across the full ambient range up to 70 °C — no derating needed in a warm enclosure. Breaking capacity hits 242 kA at 240 V and 187 kA at 415 V, so it handles high-fault utility feeds without cascading upstream — a real advantage on transformer-secondaries or industrial mains. It's designed for line protection, meaning it guards cables and busbars from overloads and short circuits, not motor or generator protection — the trip curve and accessories are tuned for that role.
Auxiliaries and releases — what's on board
This variant ships with a shunt trip release (STL) for remote tripping, plus two auxiliary switches, one trip alarm switch, and one electrical alarm switch (HQ configuration). The auxiliary switch set lets you signal breaker status back to a PLC or annunciator without adding external relays — useful for a maintenance team trying to isolate a fault fast. There's no undervoltage release and no ground-fault monitoring on this order code; if you need those, you're looking at a different suffix in the 3VA2 family.
Physical fit and environment
Dimensions are 181 mm high, 105 mm wide, 86 mm deep — it occupies a standard MCCB footprint on a DIN rail or panel-mount base, so it drops into most SENTRON or third-party enclosures without re-drilling. Operating range covers -25 °C to 70 °C ambient; storage from -40 °C to 80 °C. The 63 A rating holds steady across that entire operating band — no summer-derate headache. Maximum power loss is 4 W, which is negligible for enclosure thermal calculations — you won't need to upsize the cabinet for this one breaker.
Lifecycle and sourcing reality
There is no official successor order code; the 3VA2 series is the current generation and this suffix is the active line-protection variant with shunt trip and HQ auxiliary switch pack.