What this MCCB delivers
The 3VA2116-5KP32-0BH0: The ETU850 is a communicating trip unit — the breaker carries a communication function, so you can pull event logs and settings over the bus. Auxiliary contact version is 2 auxiliary switches plus 1 trip alarm switch HQ. An undervoltage release (UVR) is integrated, and the basic switch variant is 3VA2116-5KP32-0AA0.
Thermal derating and real-world current
The 160 A rating holds from 40 °C through 50 °C. At 55 °C it derates to 154 A, at 60 °C to 148 A, at 65 °C to 142 A, and at 70 °C to 136 A. If your panel ambient runs above 50 °C, factor the derating into your load schedule — the breaker won't trip on temperature alone, but you lose headroom. Dimensions are 105 mm wide, 181 mm high, 86 mm deep. That 105 mm width is standard for a 3-pole SENTRON 3VA2 frame — drops into the same panel cutout as the 3VA2116-5JP32-0AE0 without rewiring or busbar rework.