The Siemens 3VA1050-4ED32-0AF0 is a 3-pole IEC frame 100 circuit breaker from the 3VA1 series, rated at 50 A with a fixed thermal-magnetic overload release (TM210) and a fixed short-circuit protection setting of 10 x In. Its breaking capacity class S delivers 36 kA at 415 V, which means it can safely interrupt fault currents up to that level on a 415 V three-phase supply without upstream cascading — a key figure for panel coordination studies.
Integration Notes
The 3VA1 frame mounts on a DIN rail in a standard panel enclosure. The nut keeper kit secures the breaker during high-vibration environments like conveyor or pump panels. The auxiliary switch HQ and trip alarm switch HQ provide remote status feedback — the HQ auxiliary signals the breaker's open/closed position, while the trip alarm signals a fault trip, useful for PLC-based alarm annunciation or motor control center (MCC) status monitoring.