Arc Fault Detection Device combined with RCBO (AFDD).

MK SENTRY AFDDs provide protection against fires caused by electrical arcing resulting from faulty wiring or poor connections.
The AFDD analyses curent/voltage characteristics to identify arcing and automically trip to isolate the circuit.
AFDDs detect arcing faults which can be undetected by MCBs and RCDs.

Types of arc fault:

Series arc fault, in-line conductor caused by;

- Loose connections
- Damaged cables (broken, crushed, worn)
- Rodent damage

Parallel arc fault, between live conductors, L-N and L-E undected by MCB/RCD resulting from;

- Damaged insulation
- Pierced insulation (power tools, nails etc)
- Rodent damage
- Poor wiring/damaged appliance plugs

Product Standard: BS EN62606, BS EN61009-1.