BackSPD for IT System

The series is for fine protection of measuring and control circuits of various equipment to prevent over voltage damage. Ultra-Slim (only 6 mm) and multi-I/O design are specially designed for space saving. It provides 5V, 12V, 24V operating voltage options, and realize the full mode protection of high / low frequency, single / double pair of wires, which is widely used in wind power system, automation equipment and oil / gas instruments.


The power supply and network 2 in 1 SPDs are designed according to the requirements of IEC 61643-11 and IEC 61643-21,  for surveillance cameras and similar applications, and widely used in city security and smart transportation industries, etc.


PoE+ network SPD is used to protect Ethernet (Cat 6 fiber cable) and similar generic cabling system conforming to category E. GDT and diode matrix are used to realize full line and shielding shell protection, both DIN rail and bracket mounting optional.

  • PD ...A-...WS

    DIN rail, combined SPD with slim size and single pair of wire protection for high-frequency transmission systems.

  • PD ...A-...WS-2

    DIN rail, combined SPD with slim size and double pairs wire protection for high-frequency transmission systems

  • PD LD-...W

    DIN rail, combined SPD with smaller size for protecting unearthed DC power supply systems

  • PD J5-2X1000-4

    Compact SPD for internet according to IEEE 802.3at to protect the CAT.5 patch cable and downstream equipment

  • PD J48-2X1000-4

    Compact SPD for PoE+ system according to IEEE 802.3at to protect the Cat. 6A patch cable and downstream equipment

  • PC ...-10W2-21/J5-2X100-2

    Compact 2 in 1 SPD for protecting power supply and network & video monitoring systems, and widely used in security city, smart transportation, etc.

  • PD B5-3W75

    Compact SPD with BNC interface used for protection of camera, CCTV and mobile communication systems