Electric cars that drive themselves. Food delivered to you at the tap of a finger. Booking a flight to outer space. Solar energy. 

This isn’t the Jetsons, this is the world we live in today! Solar energy has surged in adoption over the past decade, with the price of solar PV panels falling 70% since 2014. Models project that by 2030, nearly one in seven U.S. homes will be powered by solar. Currently, around 3.5% of commercial buildings have solar panels, and an additional 1% use solar energy that is supplied from an offsite source.

TL;DR: Solar energy is big and getting bigger. The RF Solar Combiner Box is a great product for bringing multiple strings together in both residential and commercial settings.

What is a solar combiner box?

In a solar combiner box, each string conductor lands on a fuse terminal. Then, the output of the fused inputs get combined into a single conductor that connects to the inverter. The inverter is what converts the DC power from the solar source into AC power for use in buildings.

RF Solar Combiner Box: Product Features

RF Solar Combiner Boxes support the combination of up to 3, 4, 6, 8 or 12 strings. RF-3, 4, 6 are ungrounded while RF-8 and 12 are grounded. In ungrounded combiner boxes, fuses are provided for both the positives and negatives. Housed in a fiberglass enclosure, the combiner boxes offer unparalleled protection against exterior elements. The oversized busbars reduce losses and offer improved efficiency for connections.

Mountable on solar rail using brackets, the RF Solar Combiner Box works with grounded string inverters and its fiberglass enclosure has a 20-year usable outdoor life. 

RF Solar Combiner Box Specs 

• Touch-Safe fuse holders
• Input Wire Size Range: #6 – #14 AWG
• Connector Type: Screw Clamp
• Maximum Current Per Terminal: 24A
• Maximum Fuse Size: 30A

Product Attributes

• Height: 11.32 in / 288 mm
• Width: 9.32 in / 237 mm
• Depth: 5.39 in / 137 mm
• Protection Rating: NEMA Type 3; NEMA Type 3R; NEMA Type 4; NEMA Type 4X
• Material: Fiberglass
• Finish: Smooth Matte
• Color: Light Gray
• Color Code: RAL 7035
• Thickness: 0.13 in / 3.3 mm
• Nominal Voltage: 1000 V
• Nominal Voltage Type: AC/DC
• Number of Contacts: 3
• Max Power Supply Input Wire Size: #6 – #14 AWG
• Max Heating Cable Output Wire Size: #6 – 250MCM AWG
• Max Current: 72 A
• Weight: 5.1 lb

Are you ready for the next wave of solar?

We read that 70% of commercial buildings are considered targets for solar energy production—and we want you to reap the benefits of this potential! If you’re looking to learn more about solar energy products or need support on an upcoming project, HOLT can help! Get in touch with a rep today and let’s win together—for you, your business, and the planet!