The Siemens 3VA1180-4EF32-0BA0 is a 3-pole IEC molded-case circuit breaker in the 3VA1 series, frame 160, with a breaking capacity class S rating of Icu=36kA at 415V. It is configured for line protection with a TM240 thermal-magnetic trip unit, rated In=80A, with overload protection adjustable Ir=56A...80A and short-circuit protection Ii=5...10 x In.
The TM240 thermal-magnetic trip provides inverse-time overload protection (thermal) and instantaneous short-circuit protection (magnetic), with the adjustable Ir band letting you fine-tune the continuous current setting to the actual load without swapping the trip unit. Frame 160 accepts up to 160A rated current in the same physical footprint, so this 80A unit leaves headroom for future upsizing on the same bus.