It is used for protection of communication lines, signalling loops, circuits of secondary power supply sources from overvoltages arising due to atmospheric effects, switching of equipment, inductions from high-voltage power lines and other high voltage sources. Lightning protection - 2 communication lines: RS485 or 12 V loop.
أخبرنا بما تحتاجه واحصل على عروض أسعار من موردين موثوقين