Breaking capacity hits 242 kA at 240 V, 187 kA at 415 V, and 121 kA at 500 V — numbers that matter when you're clearing a high-fault panel without cascading upstream. The front carries IP40 protection, meaning it's splash-safe in a closed panel but not washdown-rated.
At 55 °C it drops to 238 A, at 60 °C to 225 A, at 65 °C to 213 A, and at 70 °C to 200 A. If your panel runs hot, size the load accordingly. The ETU850 trip unit gives you adjustable protection curves and a communication function — useful for remote monitoring or selective coordination studies.
The breaker measures 105 mm wide, 181 mm high, and 86 mm deep — standard 3-pole MCCB footprint for a 250 A frame.