Hybrid two-pair surge protection module

The STC-642 is a series of four-wire surge protection modules having self-restore capability that significantly increases its performance and survivability. The modules are made of gas tubes and silicon avalanche components that protect the equipments from overvoltage transients. Featuring a three-stage hybrid technology,  the devices are efficient for two-pair data/communication wiring, indoor communication loop circuits, industrial control systems, and factory automation.

The STC-642 card edge module is gold plated, double sided and is designed to mate with the gold plated female base connector (STC-PCB1B, sold separately). When snapped together, the data circuits pass thru the protector in a serial fashion from the four field side terminals to the four electronics side terminals. Terminals 1 or 10 of the base connector must be attached to building approved ground.