Description
Type A Single Module 40A B Curve 30mA Arc Fault Detection Device
WCED WFD140B-030
The WCED WFD140B-030 AFDD is a 40A-rated protection device for high-power electrical circuits. It combines a 30mA Type A bi-directional RCBO with an Arc Fault Detection Device (AFDD), offering maximum safety against arc faults, short circuits, overloads, and earth leakage faults. This device uses a smart microcontroller to monitor electrical waveforms and instantly disconnect circuits if a hazardous condition arises, reducing the risk of electrical fires.
The WCED WFD AFDD is designed for single-phase AC systems, operating at 230V @ 50Hz. It fits into single-phase installations or can be used on one phase consumer units of a three-phase distribution board. It is not suitable for DC networks.
This AFDD provides comprehensive protection against:
- Short circuits
- Overloads
- Overvoltage conditions
- Earth leakage faults
- Both parallel and series arc faults
As a result of detecting faults, the built-in microcontroller processes arc impulses instantly and triggers rapid circuit disconnection to prevent fires caused by damaged wiring, faulty connections, or overloading.
In addition, the WFD AFDD ensures circuit stability by shutting off only faulty circuits, keeping healthy circuits operational. This prevents unnecessary power loss and reduces downtime.
Moreover, the switched neutral feature fully isolates the circuit, making insulation resistance testing easier and safer without disconnecting conductors.
This device works seamlessly with WCED TPN Distribution Boards, allowing for smooth integration into commercial and industrial electrical installations.
Key Features:
- 40A Rated Current
- 30mA Type A RCBO + AFDD
- Series & Parallel Arc Fault Detection
- Short Circuit & Overload Protection
- Overvoltage Trip at 275V ±5%
- Switched Neutral
- DIN Rail Mounting
- LED Fault Indicators
- Works with WCED TPN Distribution Boards
Why Choose This Product?
This device is ideal for high-demand electrical circuits, providing unmatched protection against arc faults, short circuits, and overloads. It ensures full compliance with BS 7671 and is perfect for installations requiring the highest level of electrical safety.
