The Siemens SENTRON 3VA2116-5JP32-0AH0 is a 3-pole molded case circuit breaker rated for 160 A continuous current across the full 40 °C to 70 °C ambient range — no derating needed as the panel warms up. The ETU550 electronic trip unit gives you adjustable long-time (tr 0.5–20 s) and short-time delay (tsd up to 0.5 s), so you can shape the curve for selective coordination downstream.
That's unusual for an MCCB; most competitors start knocking off amps above 40 °C. The interrupting ratings span the common system voltages: 187 kA at 240 V covers low-voltage main breakers in North American panels; 121 kA at 415 V and 440 V handles European and Asian industrial distribution; 76 kA at 500 V and 3.8 kA at 690 V cover higher-voltage motor control centers. The ETU550 electronic trip unit is the brains: adjustable long-time pickup and delay (tr 0.5–20 s) lets you ride through motor inrush without nuisance trips; short-time delay (tsd up to 0.5 s) gives you selectivity with downstream breakers. Communication function is built in — this variant talks to the panel's monitoring system, so you get trip data and status without adding a separate module. For a main breaker that cycles a few times a year, it's effectively infinite. For a machine-tool disconnect that cycles daily, you'll want to track the count.
The 105 mm width and 86 mm depth are standard for the 3VA2 frame size — drops into existing SENTRON switchboard cutouts without panel modification. Height is 181 mm.