What this 800 A breaker brings to a distribution panel
The Schneider C080H360FM is a ComPacT NS new generation 3-pole circuit breaker rated 800 A at 50 °C, carrying a MicroLogic 6.0 electronic trip unit. The H breaking capacity code means 85 kA Icu at 220/240 V AC and 70 kA at 380/415 V AC — enough to handle high-fault utility feeds without cascading upstream. The trip unit covers L (long-time overload), S (short-time short-circuit), I (instantaneous), and G (ground fault) protection, all configurable via the front interface. It is manually operated, fixed-mounted to a backplate, and suited for isolation per EN/IEC 60947-2.
The 85 kA at 240 V AC matters for North American 208/240 V services — it clears a bolted fault at the main before the let-through energy damages branch devices. The 65 kA at 440 V and 50 kA at 500/525 V cover the higher-voltage distribution common in mining or marine installations. Category B utilization means it is listed for selectivity with other breakers in the same series.
Fixed mount to a backplate. Width 210 mm, height 327 mm, depth 147 mm — the depth is the dimension that determines gland-plate clearance in a shallow enclosure. Connection pitch is 70 mm, front-connected both upside and downside. IP40 enclosure rating, IK07 impact resistance. Power dissipation 15 W at rated current — account for that in the panel thermal budget.
Durability and thermal memory
Mechanical endurance is 10 000 cycles. Electrical endurance at full rated current: 2000 cycles at 690 V In, 4000 cycles at 690 V In/2, 5000 cycles at 440 V In, 6000 cycles at 440 V In/2. The MicroLogic 6.0 includes a 20-minute thermal memory — after a trip, it remembers the thermal state of the conductor for that window, preventing nuisance reclose on a still-hot circuit.