The Siemens SENTRON 3VA2116-8KQ42-0AA0 is a 4-pole molded case circuit breaker rated for a continuous current Iu of 160 A — that's the current it carries without tripping under normal load, and it holds that rating across the full ambient range from 40 °C to 70 °C, so no derating curve to chase in a warm enclosure. Breaking capacity hits 440 kA at 240 V and still delivers 330 kA at 415/440 V, so it's sized for high-fault infrastructure — main switchboard or large sub-distribution where the available fault current is substantial.
Dimensions are 181 mm high, 140 mm wide, 86 mm deep — fits a standard MCCB cutout in a distribution panel; the 140 mm width is typical for a 4-pole frame at this rating. Communication function is built in, so you can integrate it with a higher-level monitoring system without an add-on module — check the ETU860 manual for protocol specifics.