YRSP-D2 surge protective device, protect against lightning surge voltages in solar system ( photovoltaic power supply system ). These units must be installed in parallel on the DC networks to be protected and provide common and different modes protection. Its installed location are recommend -ed at both ends of the DC power supply line ( solar panel side and inverter/converter side ), ely if the line routing is exte -rnal and long.High energy MOVs equipped with specific thermal disconnectors and related failure indicators. 

Three-module photovoltaic Surge Protective Device (SPD) ( with three-step DC switching device ) features visual indication  and optional remote contact signaling ( floating changeover contact ) for use in PV systems.These complete surge protec -tive devices are suitable for all PV systems in accordance with I EC 61643-31. Includes a five year limited warranty. These  prewired solutions consist of a base and locking modules that feature a combined disconnection and short-circuiting (shu -nting) device with safe electrical isolation to prevent fire damage due to DC arcs. An integrated DC fuse allows safe mod -ule replacement without arc formation.In case of insulation faults in the generator circuit, a reliable and tested fault-resista -nt Y circuit prevents damage to the surge protective devices. The green and red visual indicator flags show the module  protective status (green =good, red = replace). Apart from this visual indication,the remote signaling option features a thre -e terminal floating changeover contact that can be used as a make or break contact depending on the particular monit -oring system design employed.

And we changed the new appearance,the New look is as follows.