The Lumax Internal Rail Splice is a structural connector designed to join two sections of solar mounting rails in a flush, continuous, and load‑bearing manner. Rather than simply butt‑joining rails end-to-end or using external overlaps, the internal splice slides inside the channel/profile of both rail ends, creating a continuous “rail backbone” that maintains alignment, strength, and structural integrity.
This ensures that the joined rails act as a single long rail, capable of supporting the weight of multiple solar panels, with consistent alignment and spacing across the array.
Material: Anodised aluminium alloy
Finish/treatment: Anodised to prevent corrosion and extend service life
Compatibility: Designed to fit inside specific, matching profiles of standard Lumax solar mounting rails
Joint type: Internal joint; slides inside rail ends and is clamped with bolts or set screws
The splice ensures the joined rails act as a single, continuous beam. This improves structural integrity, eliminates weak points at joints, and allows for even load distribution, which is critical for the long-term stability of large arrays.
Because the connector is hidden inside the rail, the finished installation has a clean, flush appearance with no external joiners. This professional finish is a key indicator of a high-quality installation.
Stocking standard-length rails and splices is far more efficient than managing very long, custom rails. This approach reduces transport costs, simplifies inventory, and minimises material waste. For cross-border projects, this significantly lowers freight charges and handling complexity.
The simple slide-and-bolt installation process is quick and straightforward, reducing on-site labour time and complexity compared to fabricating custom rail solutions. This compounding efficiency gain directly improves project margins.
Splices allow installers to extend rail lengths to fit any size rooftop or ground-mount system without needing to source expensive and cumbersome custom-length rails, enabling confident bids on larger and more complex projects.
