The Siemens 3VA2063-5HN36-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for 63 A continuous current across its full operating temperature range from -25 °C to 70 °C, with no derating needed up to 70 °C. The interrupting capacity hits 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3 kA at 690 V — so it handles high-fault scenarios common in industrial switchgear without cascading upstream.
Trip unit and selectivity
Power loss runs 5.4 W maximum — negligible for panel heat budgeting but worth noting if you're packing many breakers in a sealed enclosure.
Mounting and fit
Dimensions are 105 mm wide, 181 mm tall, 86 mm deep — standard SENTRON 3VA footprint for a 63 A frame. Front protection is IP40, meaning it's splash-proof from the front but not sealed against hose-down; keep it inside a rated enclosure for wet environments.