SENTRON 3VA1116-3GE46-0AA0 — 160 A MCCB, 4-Pole, TM220 Release
The Siemens 3VA1116-3GE46-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for line protection in distribution panels. It carries a 160 A continuous current rating at 40 °C, with a 4-pole configuration and a TM220 thermal-magnetic overcurrent release — meaning the thermal element handles overloads and the magnetic element handles short-circuits, no electronic trip unit to program. Breaking capacity runs 75.6 kA at 240 V AC, 52.5 kA at 415 V AC, and 32 kA at 440 V AC, so it handles high-fault utility feeds or transformer secondaries without cascading upstream.
Thermal Derating and Voltage Ratings
Full 160 A rating holds from 40 °C through 50 °C; above that it derates to 158 A at 55 °C, 155 A at 60 °C, 153 A at 65 °C, and 150 A at 70 °C. That matters for a panel running warm — you don't lose headroom until the ambient passes 50 °C. Rated insulation voltage is 800 V, operating voltage 690 V AC. Breaking capacity holds at 11.9 kA on 500 V and 690 V systems, so it's usable on 480/277 V and 600 V industrial feeds.
Panel Fit and Environment
Footprint is 101.6 mm wide by 130 mm tall by 70 mm deep — a standard 4-pole MCCB width that drops into a SENTRON panel or a generic DIN-rail enclosure with the appropriate mounting base. IP40 on the front means it's protected against tools and wires >1 mm, but not against water ingress; mount it inside a rated enclosure for washdown or outdoor duty. Operating range is -25 °C to 70 °C; storage from -40 °C to 80 °C. Max power loss is 38 W, so factor that into the enclosure thermal budget.