The Siemens 3VA1216-6EE32-0AA0-ZD00 is a 3-pole IEC frame 250 circuit breaker with a 160 A nominal rating and a 70 kA breaking capacity at 415 V (class H). The thermal-magnetic trip unit (TM220) gives you adjustable overload protection from 112 A to 160 A, and fixed short-circuit protection set at 10 times In.
The TM220 thermal-magnetic trip gives you a thermal adjustment band (Ir) from 112 A to 160 A, so you can dial it to the actual continuous load without swapping the breaker.
Panel integration
The 3VA1 frame is the same footprint as the 3VA2 series, so if you're swapping an older unit, the busbar connections and accessory slots line up. The nut keeper kit (included with the -ZD00 variant) secures the breaker in high-vibration environments like DC power skids.