It holds 40 A continuous at 40 °C through 50 °C without derating, then steps down to 39 A at 55 °C and 60 °C, 38 A at 65 °C, and 37 A at 70 °C — so the 40 A frame stays usable across a typical 50 °C panel ambient without bumping frame size. Interrupting capacity is the headline: 187 kA at 240 VAC, 121 kA at 415 VAC, 75.6 kA at 440 V, and 17 kA at both 500 V and 690 V.
Integration and auxiliary fit
No ground-fault monitoring module is fitted; this is a straight line-protection MCCB. No communication function — it's a hard-wired breaker, not a metering or IoT device. Dimensions: 70 mm deep, 76.2 mm wide, 130 mm tall (–) — standard 3-pole MCCB footprint for DIN-rail or panel-mount backplate integration.
Environmental and compliance range
The storage minimum matters for cold warehouse or unheated site storage before commissioning — the breaker can sit at -40 °C without damage, though it must be at operating temperature before being loaded.