String Combiner Box

The Combiner Box is a device that combines the output of multiple strings of photovoltaic modules for connection to the Inverter.
alfanar’s Combiner Boxes are rated up to IP67 and include breather drains making them suitable for tropical and sub-tropical environments, depending on the geographic location and application.
Depending on the scale and topology of the photovoltaic installation, differing numbers of photovoltaic input strings will be needed. alfanar’s Combiner Box can accommodate up to 32 input strings.


Technical specifications:

  • Rated DC voltage: up to 1500VDC
  • DC switch rating: up to 630A
  • Maximum current per string: up to 30A
  • Maximum current per measuring channel: up to 35A
  • No. of DC Inputs ( P+N ): up to 32+32
  • Equipped with DC SPD
  • Degree of protection: up to IP67
  • UV resistant
  • Insulation class: up to Class II