The Siemens SENTRON 3VA2163-6HN36-0AC0 is a 3-pole molded case circuit breaker rated for 63 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed as the panel warms up. Breaking capacity hits 242 kA at 240 VAC, dropping to 187 kA at 415/440 V, 121 kA at 500 V, and 3.7 kA at 690 V. This is a line-protection design (not motor-protection), meaning it's sized for feeder and distribution duty where high fault current is the risk, not overload cycling.
Breaking capacity and selectivity
At 240 VAC this MCCB clears 242 kA — that's a full-rated SCCR for service-entrance or high-fault industrial panels where the available fault current is in the 200 kA range. The drop to 187 kA at 415/440 V still covers most European 400 V distribution boards. At 690 V the 3.7 kA limit means this frame is not for 690 V high-fault applications; that's a different frame size. The 63 A continuous rating is flat across the temperature range, so no headroom calculation for ambient above 40 °C.
Panel fit and integration
Dimensions: 105 mm wide, 181 mm high, 86 mm deep — standard 3-pole MCCB footprint for DIN-rail or panel-mount backplate installation. Ships with two auxiliary switches HQ factory-installed (no field add-on needed for status feedback). No undervoltage release, no ground-fault module, no communication function on this variant — it's a bare line-protection breaker with aux contacts only.
Power loss at rated load is 4 W maximum — negligible for thermal budgeting in a dense panel. Storage range -40 °C to 80 °C; operating range -25 °C to 70 °C. The supplied basic switch is order code 3VA2163-6HN36-0AA0, which is the internal switching mechanism — not a buyer-facing variant.