What this MCCB carries — and what it doesn't
The Siemens SENTRON 3VA2163-6HN32-0HA0 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. Interrupting capacity is 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3.7 kA at 690 V. That 242 kA at 240 V is a high-fault rating — it handles a stiff utility transformer secondary without needing a current-limiting fuse upstream. The drop to 3.7 kA at 690 V tells you this breaker is sized for 480 V and below applications; at 690 V it's still rated, but the fault capacity is modest. This variant includes a shunt trip release (STL) for remote tripping — no undervoltage release, no auxiliary switch, no ground-fault monitoring, no communication module. It's a line-protection design (not feeder or motor protection), so the trip curve is fixed for cable and busbar protection. The basic switch inside is order code 3VA2163-6HN32-0AA0.
Panel fit and mounting
Dimensions are 105 mm wide, 181 mm tall, 86 mm deep — a standard 3-pole MCCB footprint that fits SENTRON panelboards and most DIN-rail or backplate mounting schemes. No trip indicator on the front face, so fault indication relies on the shunt trip or downstream signaling.