WSP25/T1

The WSP25/T1 surge protection device is configured in a 2+0 configuration (CT1 according to BS 7671), allowing for installation in TN-S and TN-C-S earthing systems. This configuration is not suitable for use with a TT earthing system.

This surge protection device is designed for use at the boundary of LPZ 0 to LPZ 1 in structures of LPL III and LPL IV (Class III and IV Lightning Protection Systems) as a Type 1 lightning arrester. The WSP25/T1 surge protection device is also Type 2 and Type 3 tested for use in sub-distribution boards and local equipment protection.

Earth Type	Nominal Operating Voltage, L to PE (Un)	Maximum Continuous Operating Voltage (Uc)	Maximum Discharge Current, 8/20μs (Imax)	Total Discharge Current, 10/350μs	Total Discharge Current, 8/20μs	Nominal Discharge Current, Class II, 8/20μs (In)	Temporary Overvoltage, 5s (Ut)	Temporary Overvoltage, 120min (Ut)	Part Number
Earth TypeTN-S; TN-C-S	Nominal Operating Voltage, L to PE (Un)230V~	Maximum Continuous Operating Voltage (Uc)275V~	Maximum Discharge Current, 8/20μs (Imax)50kA	Total Discharge Current, 10/350μs25kA	Total Discharge Current, 8/20μs100kA	Nominal Discharge Current, Class II, 8/20μs (In)25kA	Temporary Overvoltage, 5s (Ut)337V	Temporary Overvoltage, 120min (Ut)440V	Part NumberWSP25/T1	Quantity

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