160 A MCCB with ETU350 — line protection for high-fault panels
The Siemens SENTRON 3VA2216-6HN42-0AA0 is a 4-pole molded case circuit breaker rated for 160 A continuous current, built around the ETU350 electronic trip unit. It delivers a breaking capacity of 242 kA at 240 VAC and 187 kA at 415 VAC, which means it can safely interrupt fault currents up to those levels without cascading upstream — critical for high-fault-capacity main feeders or distribution panels where selective coordination matters. Rated insulation voltage is 800 V, and the breaker carries a full 160 A across the ambient range from 40 °C to 70 °C with no derating — a flat thermal curve that simplifies panel design in warm enclosures. Power loss at rated load is 19.7 W, a figure to budget for in sealed cabinets.
Panel fit and mounting
Dimensions are 181 mm high, 140 mm wide, and 86 mm deep — a standard SENTRON 3VA2 frame footprint. Front-face protection is IP40, suitable for enclosed panel mounting where no washdown exposure occurs. The 4-pole configuration covers three-phase-plus-neutral or three-phase with a switched neutral, depending on system design.