The Siemens SENTRON 3VA1116-5EF32-0KH0 is a 3-pole molded case circuit breaker rated for 160 A continuous at 40 °C, designed for line protection in industrial distribution panels. Its interrupting capacity hits 187 kA at 240 V AC, dropping to 121 kA at 415 V and 75.6 kA at 440 V — numbers that matter when you need fault clearance without upstream fuse coordination.
Thermal derating is gradual: 160 A holds from 40 °C through 50 °C, then drops to 158 A at 55 °C, 155 A at 60 °C, 153 A at 65 °C, and 150 A at 70 °C. That means a panel ambient of 50 °C or below gets full ampacity; above that, the load schedule needs a small haircut. Insulation voltage is rated 800 V, covering 690 V line-to-line systems with margin.
Dimensions are 70 mm deep × 76.2 mm wide × 130 mm tall — a standard 3-pole MCCB footprint that fits most DIN-rail or panel-mount enclosures without re-drilling. The breaker ships with 2 auxiliary switches plus 1 trip alarm switch (HQ design), and a shunt trip release (STL) is included for remote tripping. Power loss at full load is 38 W — factor that into enclosure thermal calculations.