The Siemens SENTRON 3VA2163-6HN32-0BH0 is a 3-pole molded case circuit breaker (MCCB) rated for a continuous current Iu of 63 A, configured for line protection. It carries a breaking capacity of 242 kA at 240 V, stepping down to 187 kA at 415 V and 440 V, 121 kA at 500 V, and 5 kA at 690 V — the voltage-dependent curve you need for selectivity studies. This is a current-production part, actively manufactured.
The 63 A rating holds flat from 40 °C through 50 °C ambient — no derating needed in a typical ventilated enclosure. At 55 °C it drops to 60.6 A, at 60 °C to 58.3 A, at 65 °C to 55.9 A, and at 70 °C to 53.6 A. The rated insulation voltage Ui of 800 V means the internal clearances and creepage are designed for 800 V phase-to-phase, so this MCCB is suitable for 690 V systems (the highest voltage where a breaking capacity is listed) without derating the insulation. The trip indicator is also present on the front face for local visual confirmation. Maximum power loss is 6.5 W — low enough that heat buildup in a standard enclosure is negligible, but worth checking if you are grouping several breakers in a sealed, non-ventilated cabinet.
Dimensions are 181 mm height, 105 mm width, 86 mm depth. The 105 mm width is the standard 3-pole MCCB footprint for the SENTRON 3VA platform — it mounts on a mounting plate or DIN rail via the appropriate adapter, and the front face accepts the standard rotary handle or motor operator. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C.