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.
DIN-rail footprint and panel fit
Dimensions are 105 mm wide, 181 mm high, 86 mm deep. 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. No trip indicator on the front face, so the auxiliary switch contacts are your feedback path. Undervoltage release is not fitted, and there is no communication module — this is a standalone thermal-magnetic or electronic-trip breaker, not a networked power distribution unit.
Environmental and electrical margins
Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. Maximum power loss is 19.7 W — a useful figure for enclosure thermal calculations if you are packing several breakers in a sealed cabinet. The short-time delay settings are adjustable between 4 s minimum and 17 s maximum, giving selectivity coordination room downstream.