The 3VA1580-5EF32-0AJ0 is a Siemens 3VA1 IEC frame 1000 circuit breaker rated Icu=55kA at 415V AC, class M breaking capacity. The 3-pole construction and TM240 thermal-magnetic trip unit with ATAM (adjustable thermal, adjustable magnetic) give you overload protection adjustable Ir=560A to 800A and short-circuit protection fixed at Ii=5×In.
Built-in auxiliaries and trip alarm
The aux switches give remote status of the main contacts — open/closed — while the trip alarm signals a fault trip independently of the handle position. That matters for a PLC-based monitoring scheme: you get two separate signal paths, so a remote I/O card can distinguish a manual open from an overcurrent trip without extra wiring.
