SISO series isolation switch is suitable for a power system with rated voltage DC1200V or below and rated current 32A or below. The product can be used for infrequent switching-on and switching-off and can disconnect 1 ~ 4 MPPT lines at the same time. Sunpole PV disconnector is especially suitable for isolating lines in HVDC transmission and distribution systems, such as cutting off the high voltage direct current between solar panels and inverters.