63 A molded case circuit breaker with high interrupting capacity
The Siemens SENTRON 3VA2063-7JQ42-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for 63 A continuous current, designed for line protection in industrial power distribution panels. Its interrupting capacity reaches 330 kA at 240 V AC, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3 kA at 690 V — meaning it can safely clear faults up to those levels without upstream coordination failure. The breaker carries an insulation voltage rating of 800 V and maintains full 63 A rating across the ambient range from 40 °C to 70 °C, so no derating is needed in a warm enclosure. This is a current-production part (lifecycle stage: current), actively available through distribution channels. It includes a communication function for integration with higher-level monitoring systems and features summation-current ground-fault monitoring on L+N conductors — a useful diagnostic for detecting leakage paths in a panel without a separate GFCI module.
Dimensions and panel fit
The breaker measures 181 mm high, 140 mm wide, and 86 mm deep. The 140 mm width for a 4-pole MCCB is standard for this class — it occupies the same DIN-rail footprint as other SENTRON 3VA frame breakers, so a panel laid out for a 3VA1110 will accept this unit without re-drilling the mounting plate. Power loss is 3 W maximum, which is negligible for enclosure thermal calculations.