The Siemens SENTRON 3VA2163-7MS32-0HC0 is a 3-pole molded case circuit breaker rated for 63 A continuous current with a starter protection version designation. It carries an ETU310M electronic overcurrent release and a shunt trip (STL) auxiliary release, plus two HQ auxiliary switches. The interrupting capacity hits 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 52.5 kA at 690 V — so it handles high-fault industrial feeds without cascading upstream.
Current derating and thermal limits
Rated continuous current Iu holds at 63 A from 40 °C through 50 °C ambient. Derating starts at 55 °C (60.48 A), dropping to 59.22 A at 60 °C, 57.96 A at 65 °C, and 56.7 A at 70 °C. Maximum power loss is 75 W. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. Panel builders should account for the thermal curve when packing this MCCB in a high-density enclosure.
Dimensions and panel fit
Dimensions are 105 mm wide, 181 mm high, 86 mm deep. The 105 mm width is the standard 3-pole MCCB footprint for the SENTRON 3VA platform — it drops into existing panel layouts designed for that frame size without re-drilling the mounting plate. No trip indicator on the front face; fault status reads from the auxiliary switches or the ETU.