All Bourns® Telephone Protectors are designed to provide highly safe and reliable protection against lightning surges, power-cross conditions and ground-potential rises.

The 4-type overvoltage and overcurrent (sneak-current) 5-pins utilize Gas Discharge Tube (GDT), Multi-Stage Protector (MSP®) and TBU® High-Speed Protector (HSP) technologies to provide primary protection for electronic equipment of twisted-pair circuits.

Bourns offers our MSP® technology which contains both solid state and GDT protection components with our "switch-grade fail-short". This technology provides the fast turn-on advantages of solid state with the robustness of the GDT and the reliability and safety of our rugged failsafe. MSP® devices have 10 times the surge life of standard GDT protectors.

The TBU® HSP is utilized for advanced overcurrent protection.

Please refer to to the Bourns® Outside Plant Products Overview Guide (PDF, 2.4MB) for further information.