The Siemens SENTRON 3VA1116-5EF32-0KA0 is a 3-pole molded case circuit breaker rated for 160 A continuous current, built for line protection in distribution panels. It carries a TM240 thermal-magnetic overcurrent release and a shunt trip (STL) for remote tripping. Breaking capacity hits 187 kA at 240 V AC, 121 kA at 415 V, and 75.6 kA at 440 V — enough to handle high-fault utility feeds or transformer secondaries without cascading upstream. The 70 mm depth and 76.2 mm width fit standard MCCB mounting footprints, so it drops into existing SENTRON panel layouts without re-drilling the backplate.
Current derating and thermal limits
This breaker carries its full 160 A rating up to 50 °C ambient. Above that it derates stepwise — 153.6 A at 55 °C, 150.4 A at 60 °C, 147.2 A at 65 °C, 144 A at 70 °C. That's a clean thermal curve for panel builders sizing in warm enclosures or near transformer banks. The rated insulation voltage is 800 V, and the front face is IP40 rated — fine for a dry indoor panel but not for washdown areas.
What it doesn't carry
No auxiliary contacts, no undervoltage release, no ground-fault monitoring, no communication module, no phase-failure detection, and no trip indicator. If your circuit needs any of those, you'll add them externally or step to a different 3VA variant. The integrated auxiliary trip is order code 3VA9688-0BL33 — that's the shunt-trip coil itself, not a separate accessory.