What this MCCB delivers
The Siemens SENTRON 3VA2216-6JP42-0AA0 is a 4-pole molded case circuit breaker rated for 160 A continuous current — that's the frame size that governs your bus bar and lug selection, not just the trip setting. The ETU550 electronic trip unit gives you adjustable long-time, short-time, instantaneous, and ground-fault protection curves, so it coordinates cleanly downstream of a larger feeder breaker without nuisance tripping. Breaking capacity is the headline: 242 kA at 240 V, 187 kA at 415 V and 440 V, still 121 kA at 500 V. At 690 V it drops to 4.5 kA — that's the limit for that voltage class, so verify your available fault current if you're feeding a 690 V drive. The 242 kA at 240 V means it can sit on a high-capacity transformer secondary without needing a current-limiting fuse upstream. Rated insulation voltage is 800 V, so the breaker itself is rated for 690 V systems with margin. IP40 on the front means it's protected against tools and small wires entering the enclosure face — standard for switchboard mounting, but not for washdown environments.
Panel fit and integration
Dimensions are 181 mm high, 140 mm wide, 86 mm deep — a standard SENTRON 3VA2 frame footprint. Four poles occupies the full width of a 4-pole MCCB mounting base. Operating temperature range is -25 °C to 70 °C, with no derating across the full 40–70 °C band — the continuous current stays at 160 A regardless of ambient within that window. Storage range is -40 °C to 80 °C. Power loss at rated current is 19.7 W maximum — negligible for panel thermal calculations in a standard enclosure, but worth noting if you're packing multiple breakers in a sealed cabinet.