D-curve selectivity for motor and transformer circuits
The 5SY4220-8: The higher IEC 60947-2 figure applies when the MCB is used in an industrial panel with a known prospective fault current; the EN 60898 rating governs residential or commercial distribution boards. Both standards are listed on the same device.
Temperature derating and ambient limits
Rated 20 A at 35 °C ambient.
No stock-holding claim; procurement is per BOM quantity.
