Solectria Renewables recently introduced a new type of solar panel string combiner made completely out of stainless steel. The new string combiner product line is now available for fused string combining of any commercial solar photovoltaic system. Stainless steel combiner boxes are great for systems located outside in harsh weather conditions.
The U.S. made string combiner box are available in both NEMA4 or NEMA4X type of enclosures. The more rugged string combiner boxes are great for solar electric systems that are installed in coastal regions, harsh sea breezes can cause balance of system components to degrade over time.