LPS® TP Series

LPS® TP Series

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Protect sensitive data networks (RS485, RS422, LAN, ±12 V and ±24 V) against lightning induced surges

The LPS® TP Series of surge protective devices (SPD) for data and communication lines deploy the latest state-of-the-art technology. They provide protection for all modes against lightning induced surges successfully without impairing the system’s operation or causing excessive in-line resistance. These devices are specially designed with high surge capacity to suit even the most lightning prone regions in the world. The LPS® TP Series devices are ideal for most communications signals including RS485, RS422, LAN, ±12 V and ±24 V that use unshielded twisted pair (UTP) cables while LPS® TP-Cat 6 is for gigabit circuit. 


LPS® TP SeriesHow they work

The LPS® TP Series devices provide unsurpassed performance in lightning surge protection. They deploy multi-stage protection with GDT (Gas Discharge Tube) for primary defence. They are then linked to a second stage surge attenuation component and finally to a semiconductor voltage dependant device. When a transient surge occurs, the LPS® TP Series devices will switch to a fully conductive state to divert high current. They will then reset automatically to a non-conducting state when the current falls below the holding current.

Under excessive surge conditions, these devices will generally fail in shorted mode to earth to keep the circuit protected. For a more comprehensive protection, we recommend that the devices are installed at both ends of a data cable especially when connecting equipment are located more than 30 metres away, in adjacent buildings or outdoors. Any SPDs added to the cable will contribute some signal loss. In order to compensate the signal loss, it is recommended to reduce the maximum allowable cable length of the type of signal by 30%. All equipment and SPD earth must be linked to the system’s common earth.



  • They protect equipment with working voltages of 5 V, 12 V and 24 V
  • They come in compact sizes for easy installation
  • They have minimal interferences from different earth potential between cable ends
  • They provide all modes of protection – signal to earth as well as signal to signal lines
  • TP Rack is a standard 19” 1U rack on which a maximum of 12 units of TP-Cat 6 can be mounted


LPS® TP Series LPS® TP Series

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