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Clear- T1: It has the ability to discharge strong currents from lightning strikes and is installed in the main panel of buildings.
- T2: It has the ability to discharge current from indirect lightning strikes, network overvoltages, and arm/disarm devices of an installation. It is installed on the main panel of buildings.
- T3: Used for protecting specific loads and has low discharge current.
- The maximum peak current in kA that the surge protector can withstand during a severe overvoltage or lightning strike without being damaged.