The A9N21700 is a Vigi iDPN add-on residual current device from the Clario range, designed to clip onto a matching MCB on a DIN rail. It provides earth-leakage protection for a 3P outgoer circuit at 25 A rated current and 300 mA sensitivity, Type A, instantaneous, voltage-independent. The 400 V AC phase-to-phase operational voltage and 4 kV impulse withstand suit it for standard 400/230 V distribution panels.
Screw connection to the MCB downstream. Cable range 0.75…16 mm² rigid or 0.33…10 mm² flexible; strip 13 mm, torque to 2 N·m. IP20 finger-safe terminals; panel builders should account for the 81 mm height in enclosure layout.
Standards & approvals
Pollution degree 3, rated insulation voltage 440 V AC, impulse withstand 4 kV. Operating temperature -25…60 °C, storage -40…60 °C, 95 % RH at 55 °C. Altitude up to 2000 m.