Base for photovoltaic systems V20 and V25 U-3PH

V 20-C/U...: Base for photovoltaic systems (Δ-circuit)

• Suitable for V 50-B+C and V25-B+C covers, types 1+2, combination arresters
• Suitable for V 20-C covers, type 2, surge arresters
• Protection circuit against transverse and longitudinal voltages
• Δ-circuit
• Low DC voltage protection level: < 2.4 kV (Voc max = 745V DC with V20-C/0-550)
• Low DC voltage protection level: < 1.5 kV (Voc max = 505V DC with V25-B+C/0-385)
• Low DC voltage protection level: < 1.3 kV (Voc max = 350V DC with V50-C/0-280)
• Labelled connections

Application: In photovoltaic systems between PV modules and inverters.
V 20-C/U-3: Base

• Suitable for V 25-B+C or V 20-C
• Labelled connections
• For Y circuits in PV systems
(With cover V20-C/0-440; Voc suitable to 1,000 V DC)
(With cover V25-B+C/0-385; Voc suitable to 800 V DC)
(Switching of the base: L1 terminal=Plus; L2 terminal=Earth; L3 terminal=Minus; Earthing terminal=Free)

Application: In photovoltaic systems between PH modules and inverter.