... price with one 2p 500v spd, 600vdc spd, solar surge protector, 2p 600vdc spd, 500vdc spd factory in China, please ... us. Product Description Solar 2P DC SPD Surge protective device, protect against lightning surge voltages in solar system (photovoltaic power ... with specific thermal disconnectors and related failure indicators. FSP-D40 Surge protector FSP-D40 PVDC - specific ( IEC66I43-I /EN61643 -11 ) ...