The Siemens 3VA2216-7HN32-0HA0 is a 3-pole IEC frame 250 molded-case circuit breaker with an ETU350 LSI electronic trip unit, rated In=160A. The LSI trip curve gives you adjustable long-time (Ir=63A...160A), short-time (Isd=1.5...10 x Ir), and instantaneous (Ii=12 x In) protection, so you can coordinate selectively with downstream breakers. The shunt trip (STL) operates on 12-30V DC or 24V AC — sized for remote emergency-off or undervoltage release circuits in control panels.
Deployment context — where this breaker fits
The 110kA SCCR at 415V makes it suitable for main or feeder protection in industrial plants with high transformer kVA — think automotive, chemical, or data-center power distribution where fault currents exceed 65kA. The nut keeper kit (included per the description) secures the breaker to the busbar during high-vibration installation.