The Siemens SENTRON 3VA2116-5HL32-0AD0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current Iu of 160 A. It uses an ETU320 electronic trip unit, which gives you adjustable overload and short-circuit protection curves — useful for coordinating downstream feeders without swapping out the breaker body. Breaking capacity is the headline here: 187 kA at 240 V AC, 121 kA at both 415 V and 440 V, 79 kA at 500 V, and 4.25 kA at 690 V. That 187 kA figure at 240 V means it handles very high available fault current at low voltage — typical for transformer secondaries or large bus risers where the upstream transformer is big enough to dump serious energy into a bolted fault.
Thermal derating and panel fit
Full 160 A rating holds up to 50 °C ambient; above that it derates linearly to 136 A at 70 °C. If this breaker lives in a non-ventilated enclosure next to other heat sources, check the 55 °C column (154 A) or 60 °C (148 A) — the 160 A nameplate is only valid if your panel ambient stays under 50 °C. Dimensions are 86 mm deep by 105 mm wide by 181 mm tall. The 105 mm width is standard for a 160 A frame SENTRON MCCB — it occupies three 35 mm DIN spaces plus some side clearance for the arc chute vents. IP40 on the front face means it's protected against tools and wires >1 mm but not against water ingress; keep it inside a panel, not exposed to washdown.
Auxiliary contacts and trip unit
Comes with three auxiliary switches (HQ type) built in — these are the form-C contacts that signal breaker position (open/closed/tripped) back to a PLC or status lamp. No undervoltage release, no shunt trip, no ground-fault module on this variant; if you need those, you're looking at a different suffix in the 3VA2 family. Maximum power dissipation is 25.5 W at rated load. That's the heat the breaker dumps into the enclosure at full 160 A — factor it into your panel thermal budget, especially if the MCCB is enclosed with other heat-generating gear.