SolarBOS CS-28-15-N4 Combiner Box
  • Item Code: 79034

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  • SolarBOS CS-28-15-N4, 28 circuit 400A 15A fuse, Combiner Box

    28-Circuit combiner box with 600 VDC 15-amp fuses, touch-safe fuse holders, single positive / negative output terminals sized for AWG #6-350mcm conductors, 20x20x6" NEMA-4 powder coated steel enclosure with ground bar. Listed to UL-1741. Fuses included.

    SolarBOS products are customizable.  Our engineering staff has pre-configured a variety SolarBOS combiners based upon what we use for our commercial installations here in New Mexico.  Consider these as recommended configurations and if you need a different configuration, let us know.  

    SolarBOS 600 VDC Combiners are ETL listed to UL 1741 for 600 Volt DC photovoltaic systems. They are designed to minimize installed costs by giving the system designer the utmost flexibility. 

    SolarBOS combiners can be specified with 4 to 36 input circuits, single or dual 90C output terminals, and NEMA-3, 3R, 4 or 4X steel or fiberglass enclosures. All combiner enclosures offer complete gasketed seals for better protection from the elements as well as plenty of wiring room for ease of installation.

    Combiner Features
    -ETL Listed to UL 1741
    -90C Output Terminals
    -NEMA-3, 3R, 4 & 4X Rated Enclosure Options
    -Steel or Fiberglass Enclosures
    -Rated for 600 VDC and Continuous Duty
    -Touch-Safe Fuse Holders
    -Cover Doors with Poured-In-Place Seamless Gaskets
    -High Quality Negative Input
    -Terminal Blocks
    -Configured for both positive and negative grounded arrays
    -Clean Design for Ample Wiring Room

    SolarBOS products are designed and manufactured with the system integrator in mind, using the highest quality components to ensure long-term field reliability. All products are assembled in our UL certified facility in Livermore, California, and we guarantee customer satisfaction.

    Combiner Specifications
    SolarBOS Source Circuit Combiners offer many configuration options, including single or dual output terminals, number of input circuits, fuse ampacity, and enclosure type. 

    A common top level part number is a CS-12-15-N3. This “reads” as a 12-circuit, single output combiner box with 15-amp fuses and NEMA-3/3R enclosure. SolarBOS offers Single and Dual output terminals (CS and CD), anywhere from 4 to 36 input circuits, 2 to 30-amp fuses, and NEMA-3/3R, 4, and 4X enclosures as standard options. 

    Please refer to the following table for dimensions and shipping weights.

    Number of Input Circuits: 20 to 30
    Input Conductor Size Range (AWG): #16 to 4
    Max Fuse Size (Amps):30
    Max Rated Current (ADC Continuous): 400
    Number of Output Conductors: 1 or 2
    Output Conductor Size Range (AWG): #6 to 350 kcmil * 
    Enclosure NEMA Ratings: 3 / 3R / 4 / 4X 
    Steel Enclosure Dimensions: 20x20x6 inch 
    Approx. Weight (Powder Coated or Stainless Steel): 45 lbs
    Fiberglass Enclosure Dimensions: 26x22x10 inch
    Approx. Weight (Fiberglass): 29 lbs

    An few example part numbers are explained below:
    CS-12-15-N3 = Combiner, 12 circuit, single output terminals, with15-amp fuses and NEMA-3/3R enclosure
    CD-24-10-4XF = Combiner, 24 circuit, dual output terminals, with10-amp fuses and NEMA-4X fiberglass enclosure
    CS-08-15-N4 = Combiner, 8 circuit, single output terminals, with15-amp fuses and NEMA-4 enclosure


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  • Length: 26"
    Width: 22"
    Height: 10"
    Weight: 45 lbs