Eaton AFDD-40/2/C/003 Arc Fault Detection Device 2P 40A C-Curve 30mA Type AC

The Eaton AFDD-40/2/C/003 is a sophisticated safety device that combines arc fault detection and circuit protection in a single unit. Designed to mitigate the risk of electrical fires, this device continuously monitors electrical circuits for the presence of hazardous arc faults that standard circuit breakers or residual current devices might overlook. By identifying these dangerous conditions, it automatically interrupts the power supply, providing a critical layer of protection for modern electrical systems.

Advantages

This device offers comprehensive protection by integrating multiple safety functions into one compact component. Its advanced detection technology is specifically engineered to distinguish between normal operational arcing, such as that found in motors or switches, and dangerous arc faults that could lead to ignition. The robust construction ensures reliable performance in both residential and commercial environments, significantly reducing the risk of fire caused by damaged wiring, loose connections, or insulation failures.

Suitable for

• Residential electrical distribution boards
• Commercial office buildings
• Protection of final circuits in homes
• Preventing fire hazards in aging electrical installations

When it may not be suitable

This device is not intended for use in circuits where high-frequency noise or specific industrial equipment might cause nuisance tripping. It is also not a substitute for proper electrical maintenance and should not be installed in environments that exceed its specified operating temperature or environmental ratings.

Key specifications

• Rated current: 40A
• Tripping characteristic: C-Curve
• Sensitivity: 30mA
• Poles: 2-pole
• Type: AC

How to use

The device must be installed by a qualified electrician in accordance with local electrical regulations. It is mounted onto a standard DIN rail within a distribution board. Once installed, the device is wired into the circuit it is intended to protect. Regular testing should be performed using the integrated test button to ensure the mechanical and electronic components remain functional over time.

What to consider before purchase

• Verify that the 40A rating matches your circuit requirements
• Ensure compatibility with your existing distribution board layout
• Confirm that the installation environment meets the technical requirements for Type AC devices

Usage recommendations

Regularly test the device using the built-in test button at least every six months to ensure continued protection and operational integrity.