63 A MCCB for motor and starter protection
The Siemens 3VA2163-7MS36-0HL0 is a SENTRON molded case circuit breaker (MCCB) designed specifically for starter protection — meaning it's sized and characterized to handle the inrush and overload profile of motor starters, not just general distribution. Rated 63 A continuously from 40 °C up to 70 °C, it holds its full ampacity across the typical panel ambient range without derating. Three poles, with a breaking capacity of 330 kA at 240 V and 242 kA at 415 V, so it safely interrupts high-fault currents in industrial low-voltage switchgear without cascading upstream. At 690 V the breaking capacity drops to 3.7 kA — still adequate for most 690 V motor circuits where the supply transformer limits fault current, but worth verifying against the site's available fault level if used on a 690 V bus. The unit ships with a shunt trip (STL) release plus two auxiliary switches, one trip alarm switch, and one electrical alarm switch (HQ configuration), giving the control system full status feedback.
Panel fit and dimensions
Footprint: 105 mm wide × 181 mm tall × 86 mm deep. Fits standard 3-pole MCCB cutouts and busbar risers without adapter plates.