The Siemens 3VA1150-3EF32-0DH0 is a SENTRON molded case circuit breaker (MCCB) rated for 50 A continuous current across a 40 °C to 50 °C ambient — it holds 50 A flat through that range, then derates to 45 A at 70 °C. Three poles, line-protection design, no communication module onboard. The interrupting ratings climb with voltage: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at 500 V and 690 V.
The 3-pole body and integrated UVR mean the breaker occupies the same slot as a base MCCB plus an external undervoltage module — saves one DIN position. Auxiliary switches and trip alarm are pre-wired to the terminal block; no additional wiring for status indication.
