Schneider Electric C125H45EFM is a 4-pole fixed-mount ComPacT NS new generation MCCB. Rated 1250 A at 50 °C with a MicroLogic 5.0 E electronic trip unit that includes an integrated energy meter — the E suffix means it measures and reports energy consumption directly through the trip unit's LCD display. Breaking capacity is 70 kA Icu at 380/415 V AC 50/60 Hz per IEC 60947-2, with a code H designation. At 220/240 V it reaches 85 kA Icu, and at 660/690 V it holds 42 kA Icu. The trip unit provides L (long-time overload), S (short-time short-circuit), and I (instantaneous) protection curves, plus a 20-minute thermal memory. That thermal memory prevents nuisance tripping on reclose after a brief overload — the breaker remembers the previous thermal state and adjusts the curve so it doesn't trip too early on a second start.
Fixed backplate mount, 327 mm high × 280 mm wide × 147 mm deep. Front connections both top and bottom — wire entry and busbar landing on the same face, which simplifies panel layout. Connection pitch is 70 mm, standard for this frame size. IP40 enclosure protection, IK07 impact resistance. Manually operated with an LCD display showing measured values and fault codes — four red LEDs for fault indication, one yellow for overload. Neutral on the left. Rated for 0–2000 m altitude without derating; above that up to 5000 m with derating. 0–95 % relative humidity range.