The 3VA2116-5HN32-0KL0 is a 3-pole SENTRON molded case circuit breaker rated 160 A continuous current across the full 40 °C to 70 °C ambient range — no derating needed up to that ceiling. The 75.6 kA at 500 V and 3.7 kA at 690 V cover the upper voltage bands where arc energy is higher.
The 3-pole footprint is standard for a 160 A MCCB; check the depth clearance for the shunt trip wiring and auxiliary cable bundle — the 86 mm depth is from the mounting surface to the front of the breaker body, not including the handle throw.