The Siemens 3VA2116-0KP32-0AH0 is a SENTRON 3VA2 molded case circuit breaker on an IEC frame 160, rated for a maximum of 256 A and a minimum of 32 A. The ETU850 electronic trip unit with LSI protection (long-time, short-time, instantaneous) gives you adjustable overload pickup Ir from 63 A to 160 A, short-time pickup Isd from 0.6 to 10xIn, and instantaneous pickup Ii from 1.5 to 12xIn. That adjustability lets you coordinate selectivity downstream without swapping trip units — set Ir to match the cable ampacity, then dial Isd to ride through motor inrush.
Busbar connection on both sides — no lug kit to source separately if your panel uses a busbar distribution system.