STC-642 Series - Data/Signal Line Protection The STC-642 Series of surge suppressors are dual pair (four wire) modules using three-stage hybrid technology. This module addresses overvoltage transients with gas tubes and silicon avalanche components. In addition, sneak and fault currents are mitigated with resettable fuses (PTCs). The PTCs increase resistance several orders of magnitude when over currents exceed safe levels. A normal state resumes when over currents are removed. The ability to self restore in this manner significantly increases suppressor performance and survivability.
The card edge module is gold-plated, double sided and is designed to mate with the gold-plated female terminal connector. 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 STCPCB1B must be attached to building approved ground.
Application
Intended for indoor use on communication loop circuits which have been isolated from the Public Switch Telephone Network
Ideal for RS232 applications
Also works well for 4-20 mA signal applications
For use in service capable of supplying less than 150 milliamperes continuously
Features
Surge protection for low-voltage data signal lines
Three-stage protection (SAD, GDT, PTC)
Sneak/fault current protection
Resettable solid-state fuses - PTCs
Low capacitance option for high speed data
Plug-in module with base included
Optional DIN Rail Mounting Clip is available for use with the Plug-in module in place of the standard base
