Data Sheet

 User's Guide


 Dual Fused Solar Combiner


Dual Fused Solar Power Combiner Box Dual Fused Solar Combiner

Series: SCB2-DF


     Both Positive & Negative Fused Strings

     Models for 3, 4 or 5 String Configuration

     Continuous Duty Rated at 600 Vdc

     Touch-safe Fuse Holders

     All UL Compliant Components

     Weatherproof, Non-conductive Enclosure


  • Remote Solar Power Systems
  • Transformerless Solar Inverter System

SCB2-DF Series - Dual Fused Solar Power Combiner Boxes are rugged combiners that feature both positive and negative PV input string fusing. Features include UL listed NEMA 4X rated enclosures, touch-safe fuse holders/distribution blocks and optional 500V lightning/surge protection. Models are available in 3, 4 or 5 string setup and are rated for up to 600V. Dual fused models are preferred when transformerless inverters are used.

General Specifications
Operating Temperature: -40 to 130 F (-40 to 60 C)
Enclosure: Material: Fiberglass/Plastic Blend
Enclosure Rating: NEMA 4, 4X, UV Stabilized
Fuse Size: 10 x 38mm (Fuses not included)
Optional Lightning/Surge Protection: 500V

Available Models
Model Number SCB2-DF-3 SCB2-DF-4 SCB2-DF-5
Fused Input Circuits 3 Positive, 3 Negative 4 Positive, 4 Negative 5 Positive, 5 Negative
Input Wire Size 8-14 AWG 8-14 AWG 8-14 AWG
Output Wire Size 2/0-14 AWG 2/0-14 AWG 2/0-14 AWG
Max Voltage Rating 600 Vdc 600 Vdc 600 Vdc
String Fuse Max Rating 32 Amps 32 Amps 32 Amps
Max Combined DC Current 96 Amps 128 Amps 160 Amps
Enclosure Dimension 14 x 12 x 7" 14 x 12 x 7" 14 x 12 x 7"
Note: Does Not Include Fuses

Note: Continued product improvements make specifications subject to change without notice.