Suntree 3-1 Combiner box

Suntree SHLX-PV3/1 DC Combiner Box — 500V, 3 Strings In / 1 Out

A compact, factory-wired DC combiner for single-string solar arrays where you still want proper overcurrent, isolation and surge protection between the panels and the inverter or charge controller.

Everything's already wired at the factory, so installation is a matter of mounting the box, landing your PV positive and negative in, and running the output through to your MPPT controller. No internal assembly, no loose components, no guesswork.

Inside you get double-pole fusing (one 1100V SRD-30 fuse on each pole, rated 20A), a 2-pole 1000V DC MCB rated 32A for load-break isolation, and a Type 2 DC surge protective device rated 20–40kA to clamp lightning-induced transients before they reach your inverter. That combination covers the three things that actually kill DC-side gear: overcurrent, arcing during disconnection, and surge.

The IP65 enclosure is rated for outdoor mounting, so it can live on the array frame, a pole, or an exterior wall without needing its own weatherproof housing. Compact footprint makes it a good fit for tiny homes, cabins, sheds, campervan-scale ground arrays and any small off-grid setup.

Specifications