What this 4-pole MCCB delivers
It carries 75.6 kA breaking capacity at 240 V and 52.5 kA at 415 V, dropping to 32 kA at 440 V and 7.5 kA at 500 V and 690 V. The 4-pole design makes it suitable for three-phase plus neutral protection in distribution panels or as a main breaker in industrial switchboards.
Thermal derating matters in a hot control room
At 55 °C it derates to 49 A, at 60 °C to 48 A, at 65 °C to 46 A, and at 70 °C to 45 A. In a cement plant control room that runs 50–55 °C near the kiln, that derating is real — you lose 1–2 A of headroom. The 14.6 W maximum power loss adds to the enclosure heat load; factor it into the panel cooling calc.