CIRCA Telecom 4B1F Analog Digital Surge Protection Module (Lot of 36)

Circa Telecom 4B1E 5 Pin Analog Surge Protection Module ( Lot of 36) - Heavy-duty surge handling capability - The 4B1E series features PTC (positive temperature coefficient) technology. These optional self-resetting current limiters provide effective protection from 'sneak current' faults. The PTC is vastly superior to the competition’s heat coil solution, which requires that the module be replaced after each 'sneak current' event. New (Out of Package) Comes as seen in pictures