APC ProtectNet Standalone Surge Protector for Serial RS232 Lines

Catastrophic Event Protection - Basic Surge Protector components such as MOVs and Thermal fuses ensure instantaneous reaction to lightning strikes and wiring faults. If the surge components are damaged due to power spike or over voltage, excess power cannot reach your equipment. Unlike APC Surge Protector products, most surge suppressors continue to let power through even after circuits have been damaged, leaving your equipment exposed to other damaging surges.