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Arc Fault Detection Device (AFDD) or Arc Fault Circuit Interrupter (AFCI) is the third stage of development of electrical mains protection devices, following MCB and RCBO. AFDD TUMOV is developed according to Ecolight’s design documentation is intended for automated fire prevention due to arcing in electrical circuits and electrical appliances in residential and public buildings, and other locations.

Arcing occurs due to a violation of the normal electrical contact between the elements of electrical circuits and electrical appliances. This looks like spark discharges between these elements, accompanied by increased heat generation and the scattering of sparks. Arcing is not recognized by MCB and RCD, because it does not cause an increase in current and its leakage to the ground.

Why AFDD is required?

Situation increasing risks of fire

Loose connection

Power supply cord defective following inappropriate or excessively numerous operations

Power supply cord subjected to excessive forces (by furniture or a position)

Cable weakened at connection

Cables damaged by their environment: UV, vibrations, moisture, rodents.

Power sockets in poor condition

Accidental damage to a cable

Ageing of cable protective devices

Aluminum-copper twist-on

How does AFDD work?

AFDD TUMOV is a smart device with a microcontroller on board. AFDD work by protecting specifically against arc faults, as they automatically trip a circuit when they detect dangerous electric arcs – thus preventing the outbreak of a fire. ... Electrical fires can be decreased in number by the use of this recognized device that installers can now easily access and install.

AFDD TUMOV presentation.

DIN-rail mounted devices