D-curve trip and breaking capacity — what they mean for the panel
The D curve holds through 10–20× rated current for a short interval, then clears on the thermal-magnetic mechanism. Breaking capacity is rated at 10 kA per EN 60898 and 15 kA per IEC 60947-2; the higher IEC figure applies when the breaker is used in industrial distribution per 60947-2, giving the panel designer headroom for higher available fault current at the service entrance.
Halogen-free and silicon-free construction. Vibration resistance: 50 m/s² at 25–150 Hz and 60 m/s² at 35 Hz (4 s). Suitability for operation listed as mechanical engineering / industry. Supply frequency 50 Hz. Insulation voltage (Ui) at AC rated value 440 V.
