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The WFD110B-030 is a 10A, B Curve Arc Fault Detection (AFDD) RCBO, combining arc fault detection, residual current protection (30mA), short-circuit, and overload protection in one compact device. Built to BS 7671:2018 (18th Edition) standards, it delivers advanced fire prevention for modern electrical systems.

Unlike a standard RCBO, this device features microprocessor-based arc fault detection, continuously monitoring the electrical waveform for dangerous arc signals caused by worn wiring, poor connections, ageing circuits, or faulty appliances. When detected, it trips instantly, cutting both live and neutral conductors to eliminate fire hazards.

Installer Tip: The 10A AFDD RCBO is best suited for socket circuits and small appliance circuits in HMOs, student housing, and sleeping accommodation where fire prevention is essential.

Protective Coverage

This AFDD RCBO combines:

  • Arc fault detection – series and parallel
  • Residual current protection – Type A (30mA, AC + pulsed DC)
  • Short-circuit and overload protection
  • Overvoltage protection – trips at 275V ±5%

Variant Comparison

Model Rating Curve Sensitivity
WFD106B-030 6A B Curve 30mA
WFD110B-030 (This Product) 10A B Curve 30mA
WFD116B-030 16A B Curve 30mA
WFD120B-030 20A B Curve 30mA
WFD132B-030 32A B Curve 30mA
WFD140B-030 40A B Curve 30mA
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