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         TNR-B/C/D series surge protector is designed and manufactured according to GB18802.1-2011/IEC61643-1:2005. It is used in AC 47-63Hz's TT, IT and TN power supply system, which is used for T2 class II protection. It prevents all kinds of electronic and electrical equipment from being damaged by lightning overvoltage.

         TNR-B, C series protectors are mostly used to distribution box protection in electric box and low voltage switchgear cabinet.

         TNR-D series protection and electrical equipment terminal protection, can be installed in the electronic and electrical equipment, distribution box, communication equipment.

       1. from the failure to indicate when overheating, surge protector caused by the deterioration of the breakdown, the failure from the device can automatically from the from the grid, and gives the red (window) signal (normal window green), which indicates that the protector has failure need to be changed.

       2. Remote signal warning device:

A telegraphic contact is a constant open close contact. When one or more modules fail, the state of the dry contact is turned over. The rated capacity of the contact contact: 250V/3 (0.5) A.

1. The high efficient varistor is used, and the response time is fast.

2. It is suitable for power supply systems such as TT, IT, TN and so on. It is used for T2 protection.

3. The alarm contact with remote signal is convenient for remote monitoring of the state of the protector.

4. the standard 35mm rail installation;

5. hot pluggable module design.