DC Isolator Switch – Single String


SKU: DC21SW1 Categories: ,


Single String DC isolator switch is used between DC PV arrays and grid-connect inverters. Positioned adjacent to the inverter a DC switch is required to provide a means of manually isolating the entire PV array during system installation or any subsequent maintenance.


A PV array cannot be turned off and terminals remain live at all times during daylight hours. It is important that all junction boxes and switchgear show appropriate warning labels. (see Related Items below)

DC-21B Ratings

  • 450V – 25A
  • 500V – 21A
  • 650V – 20A
  • 800V – 18A
  • 920V – 11A


  • Depth: 100mm (including switch)
  • Length: 162mm
  • Width: 85mm
  • Weight: 390g
  • Waterproof rating IP66/IP67