The Siemens SENTRON 3VA2116-5HN36-0CA0 is a 3-pole molded case circuit breaker rated for 160 A continuous current at 40 °C, with an ETU350 electronic trip unit configured for line protection.
Thermal derating and the real continuous current
Above that, it drops: 154 A at 55 °C, 148 A at 60 °C, 142 A at 65 °C, and 136 A at 70 °C. If your enclosure runs hot (poor ventilation, solar load, adjacent heat sources), the 55 °C or 60 °C row is the one you size against, not the 40 °C headline. The maximum power loss of 28 W at rated current gives you a number for enclosure thermal calculations.
At 240 V the breaker clears 187 kA symmetrical — that's full-rated for most North American 240/120 V panel feeds. The steep cliff at 690 V (4.25 kA) tells you this frame is not intended for 690 V main service; at that voltage you need a different frame or a current-limiting upstream device. The 20 000 latching endurance cycles suggest it's rated for occasional switching under load, not daily motor starting — it's a distribution breaker, not a contactor replacement.