V 20-C/U-3-PH-Y-FS: Base for photovoltaic systems up to Voc=1,000 V (Y circuit)• Suitable for V 50-B+C and V25-B+C covers, Type 1+2 combination arrestor• Suitable for V 20-C covers, Type 2, surge arrestor• Protection circuit against transverse and longitudinal voltages• Y circuit• Low protection level < 4.0 kV (Voc max = 1,000 V DC with V20-C/0-440)• Low protection level < 3.0 kV (Voc max = 900 V DC with V25-B+C/0-385)Low protection level < 2.6 kV (Voc max = 600 V DC with V50-C/0-280)• -FS with remote signalling, potential-free changeover contact, for function monitoring• Labelled connectionsApplication: In photovoltaic systems between PH modules and inverters.
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