The Siemens SENTRON 3VA2116-5KP32-0KA0 is a 3-pole molded case circuit breaker rated for 160 A continuous current at 40 °C, built around the ETU850 electronic trip unit. It's a line-protection version — meaning the trip curve and coordination are set for feeder and main-switch duty, not motor-starting profiles. Communication function is present on this variant, so it can talk to a higher-level controller for power monitoring or load-shedding commands.
At 55 °C it derates to 154 A, at 60 °C to 148 A, and at 70 °C — the maximum operating ambient — it's still rated 136 A. That's a shallow derate curve; you don't lose much headroom in a warm enclosure. Mounting dimensions are 105 mm wide by 181 mm tall by 86 mm deep — standard SENTRON 3VA footprint for a 160 A frame. The 86 mm depth means it fits flush in most 200 mm deep enclosures without forcing a deeper gland plate. For a 160 A frame that's moderate; plan for natural convection or a small fan if the enclosure is tightly packed.