Solar BOS Components: Cables, Connectors, Mounting and Protection

PV cables and connectors

The cable directory includes APAR and RR Solar. Live listings include APAR DC solar cables in different conductor sizes, colours and reel lengths. PV connector brands include Stäubli, Elmex and Weidmuller, with Stäubli MC4-Evo 2 examples in the catalogue. Quote the exact part number, cable cross-section, quantity and unit. Visually similar connectors should not be treated as a documented compatible pair.

Mounting systems and mechanical fit

Mounting-system brands include Clenergy, S-5, Mibet Energy and Sunnect Solar. Identify the roof or ground-mount arrangement, module dimensions and the required mounting components before comparing offers. Include the installation conditions and project drawings or component schedule where available. Confirm the proposed system against the design requirements rather than selecting brackets by appearance alone.

Protection, monitoring and supporting equipment

Other BOS sections include combiner boxes, fuse links, fireman switches, monitoring devices, optimizers and accessories. Live examples include Stäubli in-line fuses, a Sungrow SP600S optimizer, a Sungrow SJR-04 battery combiner box and a RainWise PVMET-COMWS200 weather station. These serve different functions: match each part to the intended circuit or monitoring task, and use its exact technical documentation.

Turn the bill of materials into an enquiry

Prepare a separate RFQ line for each component, showing the manufacturer and part number or specification, ratings, dimensions, quantity and unit. Distinguish cable metres from reels and individual connectors from pairs or packs. Include destination and required date. Compare the supplied accessories and documentation as well as price so the quotation covers the complete installation requirement.