TRSS Series surge protective device(Abbreviation: SPD) are suitable for AC 50/60Hz, rated voltage up to 380V IT、TT、TN-C、TN-S、 TN-C-S and other power supply system，It protects the system from indirect

and direct lightning effect or other transient over voltage.

        SPD is designed by according with GB18802.1/1EC61643-1 standard.

Structure and Principle

      SPD as a port, its features are anti-shocking protection, indoor-mounted installation, voltage limiting.

      SPD internal with a disconnector. When the SPD breakdown by over heating, the disconnector can remove from the power grid automatically, and show indication signal. When SPD is working normally, visible displays green, it displays red when it breakdown.

      1P+N,2P+N,3P+N SPD accordingly consistof 1P,2P,3P SPD+NPE zero ground protection module,applying to TN-S、TN-C-S and other power supply system.

Product Installation

      With 35mm standard Din-rail mounting, connecting copper stranded conductor is 2.5~35mm².

      Each pole is necessary with protection一using fuse or miniature circuit breaker to protect. It helps to protect them in the short circuit when SPD breakdown.

      SPD is installed in front of protected equipment and connected with power supply circuit. A class SPD is installed in the building home-entry line hold larger surge current total distribution box. B, C class products most install on the floor distribution blox, D class SPD is installed in front of equipment which with low surge current and in a low residual voltage place.

Model and meaning                                                                                                                      Dimension drawing

Please click here to view detailed technical parameters

AC Series Classification