What this MCCB delivers — and what the ratings actually mean
The Siemens SENTRON 3VA2216-7JP42-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for 160 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. That flat thermal curve is unusual; most breakers start pulling back above 40 °C. The ETU550 electronic trip unit gives you adjustable long-time, short-time, instantaneous, and ground-fault protection curves, plus a communication function for remote monitoring or selective coordination studies. Breaking capacity is the headline: 330 kA at 240 V AC, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 4.5 kA at 690 V. That 330 kA figure at 240 V means this breaker can safely interrupt a fault current up to 330,000 A without welding its contacts or venting plasma — critical for high-fault installations like transformer secondaries or large motor control centers. The 690 V rating drops to 4.5 kA, which still covers most industrial distribution faults at that voltage level. Rated insulation voltage is 800 V, so the breaker's internal clearances and creepage are designed for 690 V systems with margin. The front face carries IP40 protection — fine for a clean panel environment, but not for washdown areas. Dimensions are 140 mm wide, 181 mm tall, 86 mm deep — a standard 4-pole MCCB footprint that fits most Siemens SENTRON mounting bases and busbar systems.
Panel integration — what fits where
Mounts on a standard DIN rail or Siemens SENTRON mounting plate. The 140 mm width occupies three module spaces on a DIN rail.