Siemens 3VA2063-6HN32-0JA0 — 63 A SENTRON MCCB with Shunt Trip
The Siemens 3VA2063-6HN32-0JA0 is a SENTRON molded case circuit breaker (MCCB) rated for 63 A continuous current across the full ambient temperature range from 40 °C to 70 °C, meaning no derating is needed in a warm panel — the breaker holds its 63 A rating all the way up to 70 °C ambient. This 3-pole unit carries a shunt trip release (STL) for remote tripping, making it suitable for emergency-stop or supervisory control circuits where a control signal must open the breaker independently of overcurrent conditions. The breaking capacity is 242 kA at 240 V AC, 187 kA at 415/440 V, 121 kA at 500 V, and 3 kA at 690 V — these are the maximum fault currents the breaker can safely interrupt at each voltage level, so selectivity studies and SCCR calculations should use the voltage-specific value, not the highest one.
Panel Fit and Mounting
The 3VA2063-6HN32-0JA0 measures 105 mm wide, 181 mm high, and 86 mm deep — the 105 mm width is the critical dimension for multi-breaker spacing on a DIN rail or mounting plate; verify the gland plate knockout pattern accommodates this footprint before laying out the panel. Rated insulation voltage is 800 V. Maximum power loss is 5.4 W — negligible for thermal budgeting in a sealed enclosure, but worth noting if multiple breakers are ganged in a small cabinet without forced ventilation.
Environmental and Compliance
Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C — the storage limits govern handling and warehousing, not running conditions.