The Siemens SENTRON 3VA2216-5MN32-0JC0 is a 3-pole molded case circuit breaker (MCCB) rated for continuous 160 A across the full ambient range from 40 °C to 70 °C — no derating needed until you exceed that ceiling. That flat thermal curve is what you want for a motor branch circuit where the panel ambient drifts with the machine heat. Breaking capacity sits at 187 kA at 240 V, 121 kA at 415/440 V, 75.6 kA at 500 V, and 4.5 kA at 690 V, so it handles high-fault industrial supplies without cascading upstream.
That 105 mm width — roughly 4.13 inches — is a standard MCCB pitch for a 160 A frame; you can plan the DIN-rail or mounting-plate layout around it.
Environmental and electrical margins
The short-time delay settings are adjustable between 4 s minimum and 17 s maximum, giving selectivity coordination room downstream.