What this MCCB carries
The Siemens SENTRON 3VA2116-6HN32-0CH0 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. Breaking capacity steps from 242 kA at 240 V down to 187 kA at 415 V and 440 V, then 121 kA at 500 V, and 3.7 kA at 690 V. That's a lot of fault-interrupting headroom for a 160 A frame; you're buying selectivity margin on the high side, not a breaker that's maxed out at its first fault.
Built-in extras that matter on the line
This variant ships with an undervoltage release (UVR) integrated — that's the / combo — so it drops the breaker if control voltage is lost, which is standard for emergency-stop circuits and safety isolation schemes. The auxiliary switch block carries 2 auxiliary switches plus 1 trip alarm switch (HQ type), giving you status feedback for PLC inputs or remote annunciation without adding a separate accessory module. No communication function onboard; this is a hardwired breaker, not a smart metering unit.
Panel fit and thermal budget
Footprint is 105 mm wide by 181 mm tall by 86 mm deep — standard SENTRON 3VA160 frame size. Mounts on a DIN rail or direct panel; the 86 mm depth leaves room behind a 200 mm deep enclosure door. Maximum power loss is 28 W at rated load, which is modest for a 160 A frame — factor it into your enclosure thermal calculation if you're stacking several breakers in a sealed cabinet. Storage range is -40 °C to 80 °C; operating range is -25 °C to 70 °C.