Arc Fault Detection Device AFDD-16/2/B/003-A 187204

Advanced fire protection for electrical installations

This two-pole arc fault detection device (AFDD-16/2/B/003-A) from Eaton is a key element of a fire protection system, designed to detect electric arcs – a frequent cause of fires in electrical installations. The device combines the functions of an overcurrent and residual current circuit breaker with an arc detection module, providing comprehensive protection. This is particularly important in residential, commercial buildings, and places with an increased risk of fire.

Functionality and application

The AFDD-16/2/B/003-A is designed for mounting in electrical distribution boards and protecting circuits with a rated current of 16A. Its B tripping characteristic ensures a quick response to overloads and short circuits, while also allowing for the safe starting of devices with motors that generate short-term current surges. The built-in arc fault detection device (AFDD) monitors the circuit continuity and immediately reacts to the detection of dangerous arcing, disconnecting the power and minimizing the risk of fire. Additionally, the optical indication of the AFDD module status facilitates diagnostics and quick response in the event of a failure.

Key features and benefits

• Comprehensive protection: Combination of overcurrent, residual current and arc detection functions in one device.
• Early hazard detection: The AFDD module effectively detects electric arcs that can lead to a fire before they become visible or cause serious damage.
• Status indication: The built-in optical indication informs about the correct operation of the AFDD module or a failure.
• Safety of use: The B characteristic provides protection against overloads and short circuits, and also enables the safe starting of devices with motors.
• Compliance with standards: The device meets safety standards, ensuring a high level of protection for the electrical installation.
• Mounting: Mounting on TH35 rail (standard mounting rail in distribution boards).
• Rated breaking capacity: 10kA - ensures effective disconnection of the circuit in the event of a short circuit.

Technical parameters

The device operates at a rated voltage of 230V and a frequency of 50Hz. It has an energy limitation class of 3 and a degree of protection of IP20, which means protection against touching with fingers and solid objects with a diameter of more than 12.5 mm. The rated residual current is 0.03A, and the sensitivity has been defined as A – standard sensitivity for arc fault detectors. The pollution degree is 2, which means the device is intended for environments with a normal level of pollution. The width of the device is 3 modules (54mm), and the installation depth is 67mm. The overvoltage category is III, which means the device is intended for fixed installations with a voltage above 1000V AC or 1500V DC to ground.