The Siemens 3VA1150-6EE32-0AA0-ZD00 is a 3-pole IEC frame 160 circuit breaker with a 70 kA breaking capacity at 415 V, putting it in breaking capacity class H. That 70 kA Icu means it can safely interrupt a fault current up to that level without failing — critical for high-fault installations where upstream coordination demands a robust device. The thermal-magnetic trip unit (TM220) provides adjustable overload protection from 35 A to 50 A and a fixed short-circuit pickup at 10 x In (500 A).
Protection settings and deployment
The TM220 overload dial lets you set Ir between 35 A and 50 A, matching the continuous load current of a feeder or downstream panel. The instantaneous magnetic trip at 10 x In means it clears hard faults fast while riding through motor inrush — a typical balance for general distribution or light motor circuits. The nut keeper kit included with this variant is specified for DC Power OEM assembly in China, so the breaker ships ready for that integration step.