Fire protection switches, arc fault protection devices (AFDD), reduce the risk of fire caused by defects in the electrical installation. They switch off the affected part of the system when serial and parallel arc faults occur. Fire protection switches are required in accordance with DIN0100-420 for bedrooms and common rooms in daycare centers, retirement homes and barrier-free apartments as well as in fire-prone premises. DAFDD 1 compactly combines the detection of arc faults with line and residual current protection. Contact position indicators and the residual current tripped indicator enable a quick overview. The RCBO part offers protection against type A residual currents as well as against short circuits and overloads, independent of the mains voltage. Switches with tripping characteristics C are optimized for circuits with high inrush or peak currents. Switches in KV design are less sensitive to short-term pulse-shaped residual currents due to their response delay. As storm-proof devices, they increase system availability and can generally be used instead of a standard switch, since the short-time delay has no influence on the additional protection (personal protection). Properties: - Combination device with three functions, - two-pole, - neutral conductor position variable, - AFDD according to IEC/EN-62606, - RCBO according to IEC/EN-61009, - continuous self-monitoring of the AFD unit, - mains voltage-independent triggering of the FI and LS functions, - AFDD triggering reason display, - contact position display, - residual current trip display, - compact size for all rated currents, - high short-circuit strength, - clamping yoke terminals with rear protection, - tristable locking slides for easy installation and removal Mounting type: - quick fastening on mounting rail - installation position as required - feed from below Areas of application: - protection of circuits in residential and commercial buildings as well as industrial plants with TN-S and TN-CS networks., - Excluded is use in systems with TN-C networks and for the protection of circuits in which power electronics equipment generates smooth DC residual currents or residual currents with frequencies 50 Hz can cause.
