Blue Oak Energy Combiner Box, HCB Series

This line of solar combiner boxes is UL Listed for safety as an inverter accessory to standard UL1741. An important aspect of the safety listing is the wide temperature testing range which ensures the combiner boxes will safely deliver full power in the most extreme conditions.

The HCB 4 solar combiner box enclosure is powder coated aluminum. The weather-sealed, hinged design allows for vertical or sloped mounting. The 4 pole combiner box is NEMA 3R rated.

The HCB8 and HCB12 solar combiner boxes are housed in a rugged fiberglass enclosure with a NEMA 4X rating, which delivers superior resistance to harsh weather and corrosion. The weather-sealed, hinged design allows for vertical or horizontal mounting.

Inside the enclosure is a user-friendly layout with ample room to route and organize solar array conductors. All three models include fuse holders.