Protection solutions Series 1000RT, 8-Pairs protection magazines, 3-Point, Subcriber Side, 230V, 150mA

Protection magazines offer optimum primary protection against overvoltage and overcurrent distrurbances. The surge arresters limit overvoltage quickly and safely to uncritical levels and reliably discharge the resulting dangerous currents. The 3-Point protection magazines (against overvoltages) are fitted with 3-electrode arresters. In case of overvoltage, an arc is generated in the arester, which discharges the energy towards the ground potential. This arc is broken when the voltage falls below the nominal response direct voltage of the arrester. The 5-Point protection magazines (for both overvoltage and overcurrent protection) are fitted with 3-electrode arresters and PTCs, i.e. Positive Temperature Coefficient. When the nominal current of the PTC is exceeeded, the component heats up and the resistance increases exponentially. The PTC therefore limits the current, cools down in accordance with the load and then reestablish operation of the telephone line.This reversible procedure can be repeated a number of times if necessary, for both types of magazines.