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Surge protector voltage rating


Tariq
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A 1000V protector is going to offer no protection until the voltage rises to just over 1000V. You should be okay if your MPPT is built to withstand this voltage - otherwise select an overvoltage protector that is as close to the absolute max of your PV string voltage. The Citel part "DS240-350DC" is rated for normal operation at 350Vdc and absolute max of 460Vdc, so may be borderline for your application (I am not sure if your "400V" is normal operating voltage or absolute max).

Citel DS240S Datasheet.pdf

Edited by NigelL
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