What the ratings mean for fit
The 3VA2216-8HK32-0AA0 is a Siemens SENTRON molded case circuit breaker (MCCB) rated for 160 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling, which simplifies panel sizing in warm enclosures. The 3-pole design with an ETU340 electronic trip unit gives you adjustable long-time, short-time, and instantaneous protection curves, so it can be tuned for motor starting inrush or feeder coordination without swapping trip packs. Breaking capacity hits 440 kA at 240 V AC and 330 kA at 415 V, meaning it can safely interrupt high-fault currents on large transformers or busway feeds without cascading upstream. The 86 mm depth and 105 mm width fit standard MCCB panel footprints — it occupies the same 3-pole slot as other 3VA2 frame breakers, so a panel laid out for a 160 A frame accepts this unit without re-drilling the backplate or moving busbars.
Where it goes in the panel
This MCCB is designed for line protection in distribution panels, switchboards, and motor control centers. The IP40 front face keeps dust out of the trip-unit compartment in a clean indoor enclosure; no washdown rating, so keep it out of wet areas. The ETU340 electronic trip communicates no status over a bus — it's a standalone device, so fault pickup requires a visual check of the mechanical trip indicator (which this unit does not have) or a downstream ammeter.