What this MCCB delivers on a 160 A line
The Siemens SENTRON 3VA2116-5HN36-0KA0 is a 3-pole molded case circuit breaker rated for 160 A continuous current — that figure holds flat from 40 °C through 70 °C ambient, so no derating curve to chase in a warm enclosure. The rated insulation voltage is 800 V, giving headroom on 480/600 VAC distribution. Breaking capacity is the real selector here: 187 kA at 240 V, 121 kA at 415/440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V. That 121 kA at 415 V means it handles high-fault utility feeds without cascading upstream — a key spec for main or tie breaker positions in heavy industrial panels. This variant carries a factory-fitted shunt trip (STL) release for remote tripping — emergency-stop circuits or PLC-driven load shedding. No undervoltage release, no ground-fault monitoring, no communication module; it's a straight line-protection breaker with one auxiliary trigger path.
Panel fit and footprint
Dimensions: 181 mm high, 105 mm wide, 86 mm deep — a standard SENTRON 3VA2 frame that drops into the same mounting footprint as other 3VA2 breakers. The 105 mm width is the key check for multi-breaker group spacing on a DIN-rail or backplate layout. Power loss at full rated current is 25.5 W — relevant for thermal budget in sealed or compact enclosures. Operating temperature range is -25 °C to 70 °C, storage from -40 °C to 80 °C.