Detailed introduction：

Scope of application 

SMGU1 Surge Protective Device (hereinafter referred to as "Protector") is suitable for power supply systems such as TN-S, TN-C, TN-CS, TT and IT with AC 50 / 60Hz and 400V, Over-voltage protection.

This product complies with GB 18802.1-2011 standard.

Model and meaning 

 

The module of the protector is provided with a failure disengagement device. When the protector is overheated and breakdown, the failure disengagement device can automatically disengage the protection device from the power grid and give an indication signal. When the protector is normal, the label displays green, and the label is red after the failure.

Technical parameters 


Appearance and installation dimensions (mm) 
Installed in the LPZ1 or LP22 area and LP23 area junction, protection level. Protector using standard 35mm rail installation; protection using 2.5 ~ 35mm2 copper wire connection, ground wire should be used more than 4mm ² double-color wire, the length of not more than 500mm. In order to prevent the surge protector failure after the impact of the normal operation of the grid, the protection of the line in the L line should be connected to a fuse.