About This Junction Box
An IP65 junction box provides robust weather protection for electrical termination points in a solar PV installation. Whether protecting T-branch MC4 connector joints, housing string fuses, or providing a weatherproof termination point at the base of a roof, this enclosure keeps your connections safe from dust, rain, and UV degradation.
IP65 Rating Explained
The IP65 rating is defined by IEC 60529. The first digit (6) means the enclosure is completely dustproof — no particle ingress under any conditions. The second digit (5) means the enclosure protects against water jets from any direction. This makes it suitable for permanent outdoor installation on South African rooftops, walls, and ground-mount structures.
Specifications
- Ingress protection: IP65
- Material: UV-stabilised ABS polycarbonate — impact resistant and weatherproof
- Closure: Stainless steel screws with silicone-gasket sealed lid for watertight closure
- Cable entries: Multiple knockout entries (16mm and 25mm openings)
- Includes: Terminal block strip for conductor termination
- Operating temperature: -40C to +80C
- Colour: Grey RAL 7035
Typical Uses in Solar Installations
- Protecting string junction points where multiple panel strings meet before the combiner box
- Enclosing DC fuses and blocking diodes in outdoor locations
- Protecting T-branch MC4 splitter points from direct weather exposure
- Housing monitoring equipment or sensors in the field
- Providing a weatherproof termination point for cable entries into buildings





Nokwanda Cele –
Ordered the IP65 Weatherproof Solar Junction Box along with our panel installation and it arrived promptly with the rest of the system. Quality is noticeably better than local hardware store alternatives. Conductor is consistent and the crimping was clean. Satisfied customer.
Zanele Mokoena –
The IP65 Weatherproof Solar Junction Box is excellent quality with solid insulation and good flexibility. Our installer approved of the build quality and said it was up to specification for the amperage. PowerVault delivered quickly and the coil arrived neatly packaged.