... Line, Switch Value Signal Line, Data Signal Line, Communication Line2. Petrochemical System: Analog Signal Line, Switch Value ... Telemetry Line, Remote Control Line, Communication LineCharacter1. Maximum Discharging Currents 10kA (8/20us)2. High speed, low wastage3. Interference ... standard screw station type, it can protect 1-2 pairs communication lines.8/20us maximum discharging currents Imax can ...