Arc fault detection device AFDD-32,MCB
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Arc fault detection device AFDD-32

Item No.: AFDD-32
Arc fault detection device AFDD ACFI

General Information

The AFDD-32 consists of a MCB (Miniature Circuit Breaker) and a Arc fault detection module in a 1 Pole +N, 2 module DIN rail mounted unit. They combine short circuit, overload and arc fault protection and will switch off in the event of these faults being detected.

The Arc detection unit will recognise serial, parallel and ground arc faults in both radial and ring circuits. (Note serial faults in a ring circuit does not always lead to an arc fault due to power flowing to either side of the fault at the same potential voltage.

These units must be switched off when conducting insulation testing to avoid damage to the AFDD

The AFDD should be tested every month by pushing the Test button.


Recommended terminal screw torque 2Nm



Technical Data

u  Rated Working voltage 230v AC

u  Rated working frequency 50Hz

u  Rated insulation voltage 400v AC

u  Rated withstand voltage 4KV

u  MCB ratings 6A,10A,16A, 20A,25A & 32A

u  Number of poles 1P+N

u  MCB Characteristic Type B, C

u  Short circuit rating 6kA

u  Terminal Capacity 25mm²

u  Ambient Temperature range 0 to +40

u  Storage temperature range -25℃ to +55 ℃

u  Protection installed = IP40 in consumer unit & Enclosures

u  Mounting Top Hat 35mm DIN rail to EN 50022

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