Gas discharge arresters are ideal for quenching high voltage, fast rise- time interference transients. They are very high impedance (virtually open circuit) in the normal state with a typical capacitance of 1pF between electrodes. When a voltage spike appears, they arc over and present a relatively low impedance in this condition effectively quenching the spike. They are suitable for protection of telecom lines and antenna circuits. They are not recommended to be fitted across mains circuits as the low source impedance of the mains could destroy these device after the fault spike has cleared. - They are a well- proven and reliable device.- Four models are offered.- PCB Mount- 2 ELECTRODE TYPED.C. Spark-over Voltage (100V/s)230V +/- 15%