What this 800 A MCCB carries
It's a 4-pole, 800 A frame with a MicroLogic 2.0 E electronic trip unit — L (long-time overload) and I (instantaneous short-circuit) protection, plus an energy meter built into the trip unit. That 800 A rating is at 50 °C, so no derating headache in a warm panel. Breaking capacity is 85 kA Icu at 240 V AC, 70 kA at 415 V, and 42 kA at 690 V — all per IEC 60947-2. Category B utilisation means it is fully rated for selective coordination.
Fixed mount on a backplate, front connections both top and bottom. The 280 mm width and 327 mm height are standard for this frame class — plan for a 70 mm phase-to-phase pitch on the busbars. IP40 enclosure protection, IK07 impact rating. Mechanical durability is 10,000 cycles; electrical durability ranges from 2,000 cycles at full 690 V to 6,000 cycles at 440 V at In/2. That's a maintenance interval, not a lifetime limit — typical for a distribution breaker, not a switching device.