The C080N45AFM is a Schneider Electric ComPacT NS new generation moulded-case circuit breaker (MCCB) — a 4-pole, 800 A frame with a MicroLogic 5.0 A electronic trip unit. It is rated 800 A at 50 °C, meaning that at an ambient of 50 °C the breaker carries full rated current without derating; above that temperature you follow the manufacturer's thermal curve. The MicroLogic 5.0 A provides LSI protection: long-time overload (L), short-time short-circuit (S), and instantaneous short-circuit (I), so it handles both thermal and magnetic trip coordination in a single electronic package.
This breaker is a fixed-mount unit for backplate installation, not a plug-in or draw-out — so it bolts directly into the switchgear. Front connection both upside and downside simplifies busbar or cable routing. IP40 keeps out tools and small debris but is not washdown-rated — indoor panel only. The LCD display shows real-time current readings from the ammeter measurement, useful for load monitoring without a separate meter.
The 15 W power losses are the heat the breaker dissipates at rated current — factor that into panel thermal calculations.
