What this MCCB carries — and where the ratings matter
The Siemens 3VA1116-5ED32-0BH0 is a SENTRON 3-pole molded case circuit breaker rated 160 A continuous at 40 °C, with a breaking capacity that steps from 187 kA at 240 V AC down to 17 kA at 690 V AC. That 187 kA figure at 240 V tells you it handles high-fault utility feeds or transformer secondaries without needing a current-limiting fuse upstream — useful for main or tie breakers in a distribution panel where the available fault current is stiff. Rated current holds flat at 160 A from 40 °C through 50 °C, then derates gradually to 150 A at 70 °C. If your panel ambient runs hot — say, inside a non-ventilated enclosure near other heat sources — that 150 A floor at the top of the operating range means you don't lose much headroom. The breaker itself dissipates 40.5 W max at full load, so factor that into your enclosure thermal calculation. It ships with an undervoltage release (UVR) built in — that's the -0BH0 suffix — and the auxiliary switch block provides two auxiliary switches plus one trip alarm switch (HQ type). The UVR drops the breaker on loss of control voltage, which is standard for emergency-stop circuits or undervoltage protection on motor feeders. The auxiliary contacts let a PLC or SCADA system read the breaker state without tapping the load terminals.
Footprint and panel fit
Dimensions: 130 mm tall, 76.2 mm wide, 70 mm deep. That's a standard 3-pole MCCB footprint — it fits the same DIN-rail or screw-mount hole pattern as other SENTRON 3VA frame breakers. The 70 mm depth is shallow enough to clear a 200 mm deep enclosure backplate with room for wiring gutters.