The Siemens 3VA1220-6EF32-0AA0-ZD00 is a 3VA1 IEC frame 250 circuit breaker in breaking capacity class H, rated for a 3-pole configuration.
Overload and short-circuit protection settings
This breaker uses a TM240 trip unit with ATAM (Adjustable Thermal, Adjustable Magnetic) technology. The overload protection (Ir) is adjustable from 140 A to 200 A, letting you dial in the continuous current rating to match the downstream load — a common need when the conductor or equipment rating doesn't exactly match a fixed 200 A breaker. That's a standard magnetic-only range for motor branch circuits or feeder protection where you want to ride through inrush without nuisance tripping.