The Siemens SENTRON 3VA1050-4ED32-0HH0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current Iu of 50 A across the ambient range up to 50 °C before derating begins — at 55 °C it's 48 A, at 70 °C it's 45 A, so the full 50 A holds in most ventilated enclosures. Breaking capacity is 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V — that 121 kA figure at 240 V covers high-fault utility feeds common in North American panelboards, while the 75.6 kA at 415 V handles European industrial distribution.
Dimensions are 130 mm height, 76.2 mm width, 70 mm depth — that 76.2 mm width is a standard 3-pole MCCB footprint on a DIN rail or panel-mount adapter, so it drops into the same cutout as other SENTRON 3VA frames. Latching endurance is 15,000 operations.