Eaton AFDD-25/2/B/003-A Arc Fault Detection Device 2P 25A 30mA Type A

The Eaton AFDD-25/2/B/003-A is a comprehensive safety solution that integrates arc fault detection, residual current protection, and overcurrent protection into a single compact unit. Designed for 2-pole electrical systems, this device is engineered to identify and disconnect dangerous series and parallel arc faults that standard circuit breakers or RCDs might miss. By continuously monitoring the electrical circuit for the specific signatures of arcing, it provides a critical layer of fire prevention in both residential and commercial environments.

Advantages

This device offers superior protection by combining multiple safety functions into one streamlined component, which simplifies installation and saves valuable space in the distribution board. Its advanced detection technology is capable of distinguishing between normal operational arcing, such as that found in vacuum cleaners or drills, and hazardous arcing caused by damaged cables or loose connections. The inclusion of Type A residual current protection ensures that the device remains effective even in the presence of pulsating DC components, providing robust safety for modern electrical installations.

Suitable for

• Residential buildings and apartments
• Commercial office spaces
• Public buildings and schools
• Installations with sensitive electrical wiring
• Protection of final circuits against fire hazards

When it may not be suitable

This device is not intended for use in industrial environments with high levels of electrical noise or harmonic distortion, which may cause nuisance tripping. It is also not suitable for systems exceeding its rated current of 25A or for applications requiring different tripping characteristics.

Key specifications

• Rated current: 25A
• Residual current sensitivity: 30mA
• Poles: 2-pole
• Tripping characteristic: B
• Type: A

How to use

The Eaton AFDD-25/2/B/003-A 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 should be tested using the integrated test button to ensure the mechanical and electrical components are functioning correctly. Regular testing is recommended to maintain the integrity of the safety system.

What to consider before purchase

• Ensure the rated current of 25A matches your circuit requirements.
• Verify that the 30mA sensitivity is appropriate for your specific safety needs.
• Check the available space in your distribution board for a 2-pole device.
• Confirm compatibility with your existing electrical installation standards.

Usage recommendations

It is recommended to perform a functional test of the device at least every six months to ensure reliable operation and continued protection against arc faults.