The Siemens SENTRON 3VA1050-3ED36-0HC0 is a 3-pole molded case circuit breaker rated 50 A continuous at 40 °C, with a TM210 thermal-magnetic release and an integral shunt trip (STL) for remote opening. Interrupting capacity hits 75.6 kA at 240 V, 52.5 kA at 415 V, and 32 kA at 440 V — numbers that put it squarely in high-fault panel duty, not light commercial.
The 50 A continuous rating holds flat from 40 °C to 50 °C, then derates to 48 A at 55 °C, 47 A at 60 °C, 46 A at 65 °C, and 45 A at 70 °C. Interrupting capacity is voltage-dependent: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 7.5 kA at 690 V. For a 480 V delta corner-grounded system, the 440 V figure is the closest guide — 32 kA SCCR is substantial but verify against your transformer nameplate.