The Siemens SENTRON 3VA1216-5EF32-0AB0 is a 3-pole molded case circuit breaker rated for a continuous current Iu of 160 A, built for line protection with a TM240 thermal-magnetic overcurrent release. Interrupting capacity is the headline here: 187 kA at 240 V, 121 kA at 415 V, 36 kA at 440 V, and still 17 kA at 690 V. For most European 400 V panels the 121 kA at 415 V gives you headroom for a high-fault installation; you won't be chasing SCCR coordination problems on a 65 kA rated switchboard.
Thermal derating — the real-world continuous current
The 160 A rating holds flat from 40 °C to 50 °C — that's your standard panel ambient. At 55 °C it starts to taper: 155.6 A, then 151.2 A at 60 °C, 146.8 A at 65 °C, and 142.4 A at 70 °C. If this breaker sits in a hot enclosure — next to a drive cabinet or in a steel mill MCC — you lose roughly 1.5 A per degree above 50 °C. Plan your load at the ambient you'll actually see, not the label rating. Operating range is -25 °C to 70 °C; storage from -40 °C to 80 °C.
Dimensions: 70 mm deep, 105 mm wide, 158 mm high — a standard 3-pole MCCB footprint for a 160 A frame. Two auxiliary switches HP are built in — these are the form-C contacts for remote status, wired back to the control system.