2 Pcs IP68 Waterproof Junction Box Outdoor Underground Cable Line Wires Power Cord Connector Protection 2 Way Open Splice Junction Box

The M686-2 is the most basic model in the M686 series,The world's best-selling through-type waterproof junction box with one inlet and one outlet,Designed specifically for extending single-cable connections,With the highest IP68 protection rating, no potting required, and the ability to be repeatedly disassembled,Become a standard component for outdoor electrical wiringDetailed Technical SpecificationsProtection rating:IP68(Fully dustproof; withstands continuous submersion in 4 meters of water for 72 hours without water ingress)Housing Material:Flame-retardant PC engineering plastic,UL 94 Class V-2,UV-resistant, weather-resistantInterface Specifications:2×M20 threaded connections(Symmetrical left-right through)Applicable wire gauge:Comes standard with two sizes of silicone sealing plugs;5–9 mm / 9–12 mm cable outer diameterSuitable conductors:0.5 mm² to 2.5 mm² copper-core cable;Supports 2-core / 3-core / 4-coreElectrical Specifications:IEC Standards:24A/450V AC;ETL Standards:10-15A/300V ACOperating temperature:Industrial-grade:-40℃ ~ +105℃;Standard Edition:-20℃ ~ +90℃Product Dimensions:138.2mm*70mm*35.7mmInstallation Method:Wall-mounted(Comes with 2 mounting holes)Certification:ENEC/UKCA/NSW/ETL/CE/ROSHThe Principle of the Triple Waterproof StructureM686-2 achieves IP68 protection without the need for potting, thanks to its three-layer sealing design:Main seal of the housing:The annular silicone gasket between the top and bottom covers,Secure evenly with 6 screws,Form the first line of defense against waterCable radial seal:When tightening the M20 nut,The conical silicone plug is compressed axially,Radially expands to grip the cable jacket,Completely sealed against moistureTerminal Insulation Sealing;The internal terminals are enclosed in a fully insulated plastic housing,Prevent moisture from condensing between terminals and causing a short circuitCorrect Installation Steps:(Crucial! This directly affects the waterproofing performance.)Preparations:Strip approximately 10–12 mm of insulation from both ends of the cable,Expose the copper core;Feed the cable through the M20 nut, the silicone seal, and the enclosure port in that orderWiring:Insert the copper wire of the corresponding color into the terminal block,Tighten the screws with a screwdriver,Ensure that the copper core is securely clamped with no loosenessCable Sealing:Insert the silicone plug into the port on the caseTighten the M20 nuts evenly,until the silicone plug is fully compressed and grips the cableSealed container:Place the box gasket into the groove on the bottom of the box,Close the lid,Tighten the 6 screws in a crisscross pattern(Do not tighten more than one at a time)Water Resistance Test:After installation is complete,The junction box may be completely submerged in water for 24 hours,After removing it, open it to check if the inside is dryTypical Use CasesExtending Cables for Outdoor Street Lights, Garden Lights, and Lawn LightsOutdoor Cabling for Security Cameras and PoE SwitchesElectrical Connections for Landscape Fountains, Underwater Lights, and Pool EquipmentWaterproof Wiring for Greenhouses and Livestock FarmsExternal Electrical Connections for RVs and YachtsNot suitable for this situationHigh-current cables with a conductor cross-sectional area greater than 2.5 mm²Applications requiring branch circuits (select M686-3/M686-4)Prolonged exposure to corrosive liquids (such as seawater or acidic or alkaline solutions)

• 【Waterproof Box Packaging】Each set includes two waterproof cable junction boxes and a screwdriver, with each box equipped with three sets of silicone O-rings of different thicknesses (to accommodate various cables), three screw terminal connectors, and an installation kit. Rated at 450V and 24A, it meets a wide range of wiring needs.
• 【Amazing waterproof effect】This outdoor junction box features an IP68 waterproof rating. Combined with rubber gaskets and clamping nuts, it effectively prevents the ingress of rain, snow, dust, and dirt. Its robust design ensures safe and reliable performance for both indoor and outdoor use.
• 【Easy Installation】Installation requires only a screwdriver. The terminals are sealed inside the box, while the external waterproof housing conceals the cables. It supports wall mounting or underground installation, making it an ideal underground electrical junction box.
• 【High quality materials】Adopting high-quality plastic shell, high temperature resistance, adaptable to various environments, ensuring its durability and service life. Working temperature: -40 ° C~105 ° C, certified by ENEC, UKCA, NSW, ETL, CE, ROSH.
• 【Widely used】Our junction box greatly improves the convenience of connecting outdoor lighting fixtures. It is very suitable for connecting garden and outdoor billboard displays, tunnel lights, road landscape lights, underwater lights, street lights, outdoor waterproof facilities, buried lights, etc. It is a safe DIY tool. Can be used for repairing and extending power cables.