TNT Surge protective Device
Used in A. C 50Hz/60Hz, 380V/under T/T. TN-S. TN-C-S etc. Power supply system.
Provides protection against surge current resulted from direct or indirect lightning strike or similar surge voltage.
The product, using metal oxide varistor, designed to protect both phase and neutral line, is of high electricity resistance under normal operations. In case of surge current or voltage caused by lightning strike or similar, SPD functions quickly to conduct the surge voltage/current to earth and thus effectively prevent the downstream equipments of its protected line from destruction. SPD resumes its high electricity resistance to secure normal operation of the protected power network without presence of the surge voltage. The surge protective device is also named as surge protection device in brief SPD.
CONSTRUCTION AND FEATURE
Plug-in type function unit makes easy replacement
On-off indicating window
Quick response less than 25ms
TECHNICAL DATA
Pole No.: 1, 2, 3, 4
Frequency: 50/60Hz
Pillar terminal with clamp
On-Off indicating window:
Green: Normal function
Red: Functionless, immediate replacement required
Connection capacity: Rigid conductor 25mm2
Standards: IEC61643-1
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