We are offering solar pv surge protection device for 170 v dc application.slp-pv170 vu slp-pv170 vu s spd type 2 – surge arrester for photovoltaic systems replaceable varistor module, visual fault signaling surge arrester is specially designed for installation in the direct current circuits of solar photovoltaic systems.optional remote status signalling (s). Maximum continuous operating voltage for pv application