Our Waterproof Junction Box solutions are rugged outdoor junction and connection enclosures designed to protect cable joints and terminal connections from water, dust, humidity, corrosion, and UV exposure. They are intended for safe cable splicing, branching, and multi-way distribution in demanding environments where exposed electrical joints require reliable enclosure protection. Each Waterproof Junction Box is supplied with a sealing gasket and compression cable glands to help maintain a durable seal and support long-term service life in outdoor or wet-area installations.

We supply all series and sizes, including multiple body dimensions, outlet quantities, and entry directions to suit different cable diameters and installation requirements. This allows the Waterproof Junction Box range to serve a wide variety of projects, from compact outdoor lighting connections to larger cable distribution points requiring more outlets and flexible cable routing.

The enclosure is designed to function as a protective housing for cable joints and internal terminal or connector arrangements. In many applications, using a Waterproof Junction Box helps keep splices and branch points enclosed inside a sealed body rather than leaving them exposed to moisture, dust, and outdoor conditions. This improves protection of the connection point and supports cleaner cable management in exposed installations.

Key Features of Waterproof Junction Box

• High ingress protection: waterproof and dustproof construction, with series available in IP67 / IP68 configurations.
• Multiple entries: models available with 2 / 3 / 4 / 5 / 6+ cable outlets in straight or multi-direction layouts.
• Reliable sealing: silicone or rubber gasket combined with compression glands for secure sealing and cable strain relief.
• Durable housing: impact-resistant enclosure suitable for both indoor and outdoor use.
• Easy installation: screw cover, convenient access for wiring, and practical internal space for connectors or terminal blocks.
• Wide applications: suitable for street lighting, landscape lighting, fountains, CCTV, solar systems, signage, HVAC controls, and general outdoor wiring.

One of the main advantages of a Waterproof Junction Box is that it combines environmental protection with cable organization in a single enclosure. When the correct gland size is selected and the box is assembled properly, the enclosure helps protect the joint area from water ingress, dust contamination, and outdoor wear while keeping the internal wiring arranged more neatly.

Technical Information for Waterproof Junction Box

• Ingress Protection: IP67 / IP68 depending on model, gland selection, cable diameter match, and correct installation.
• Housing Material: high-strength polymer, commonly PA66 / ABS / PC depending on the series.
• Sealing Gasket: silicone or rubber.
• Cable Glands: available in Metric (M) or PG standards depending on the selected series.
• Mounting: surface mounting with fixing ears or feet depending on model design.
• Fasteners: corrosion-resistant screws depending on series.
• Color: typically black, with other colors available in some series.
• Operating Temperature: suitable for outdoor use across a range that varies by material series.
• Electrical Rating: depends on the internal terminal or connector used, as the box itself functions as a protective enclosure.

Note: Final IP performance depends on correct cable diameter selection, proper gland tightening, correct gasket seating, and intact sealing components.

Because the Waterproof Junction Box acts as the external protective enclosure, the final performance of the installation also depends on the internal connection method used and the quality of overall assembly. For this reason, correct selection of gland size, cable OD, and box configuration is important for achieving the intended protection level in real installation conditions.

Cable Size Compatibility for Waterproof Junction Box

This Waterproof Junction Box range supports a wide selection of cable outer diameters (OD) through correct gland selection. The exact supported range varies according to the box model, gland type, and selected series, but the typical supported OD range is approximately from 3 mm up to 25 mm and above on larger series.

Waterproof Junction Box Metric Glands (M) – Common OD Ranges

• M12: 3–6.5 mm
• M16: 4–8 mm (some types up to 10 mm)
• M20: 6–12 mm (some types up to 13 mm)
• M25: 10–14 mm (some types up to 18 mm)
• M32: 15–21 mm
• M40: 19–28 mm

Waterproof Junction Box PG Glands – Common OD Ranges

• PG7: 3–6.5 mm
• PG9: 4–8 mm
• PG11: 5–10 mm
• PG13.5: 6–12 mm
• PG16: 10–14 mm
• PG21: 13–18 mm
• PG29: 18–25 mm
• PG36: 22–32 mm
• PG42: 32–38 mm
• PG48: 37–44 mm

Compatible Cable Types for Waterproof Junction Box

• Round flexible cables made of PVC, rubber, or similar outdoor cable constructions.
• Low-voltage lighting and control cables.
• Solar and outdoor power cables where the cable OD matches the gland range.
• Armored cables (SWA) when used with armored-compatible gland solutions where required.

The broad compatibility of the Waterproof Junction Box makes it useful across different installation types, provided the gland and cable combination is selected correctly. This flexibility is especially valuable in projects where different cable constructions or outlet directions are required within one product family.

Typical Applications of Waterproof Junction Box

• Street lighting poles and roadway infrastructure.
• Garden and landscape lighting installations.
• Fountains and wet-area lighting systems.
• CCTV and outdoor power/network support lines.
• Solar installations and outdoor power distribution points.
• Outdoor signage, HVAC controls, and industrial field wiring.

These applications often require protected cable splices and branch points in exposed conditions. A Waterproof Junction Box helps keep these connections enclosed and better protected from the surrounding environment while also supporting organized installation practice.

Available Series and Configurations of Waterproof Junction Box

• Mini, standard, and deep-body versions.
• 2-way, 3-way, 4-way, 5-way, 6-way, and larger outlet configurations.
• Different entry directions including side, straight, and multi-side layouts.
• PG or Metric gland standards with multiple OD support ranges.

For more general information about ingress protection concepts and electrical enclosure guidance, you can refer to
IEC
and
Electrical Installation Guide.
These external resources are helpful for broader reference on enclosure protection and installation principles.