Junction Boxes | Electrical Junction Box | RS
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    Junction Boxes

    Junction boxes, also known as electrical outlet boxes or J boxes, act as weatherproof outdoor enclosures that provide secure housing for electrical wiring and devices. These outdoor waterproof boxes do is protect electrical components from external forces such as weather, neighbouring materials, and vandalism. Junction boxes also serve as a connector to a pattress and are often found installed behind a downlighter. Despite their similar appearance, junction boxes contain wire connections inside, unlike pull boxes which do not.

    How do Junction Boxes Work?

    Junction boxes provide points of entry for electrical cables. It is important to choose the right size and type of junction box for your project's needs to ensure safety and compliance with the relevant rules and regulations. These boxes may have knockout, integrated thread, or self-sealing membranes for cable entry. Internally, there are mounting points for screws in each corner, so it is important to use the correct masonry plugs, anchors, and fixings for the surface you are mounting the box to (such as a wall, skirting board, or ceiling). A sealed box lid or cover provides security for all the internal components.

    What Materials are Junction Boxes Made From?

    Junction boxes can be made from various plastics (such as PVC and fibreglass) and metals (stainless steel). Both types are suitable for most household projects, but metal boxes must be grounded and connected to the ground system of the circuit. The material of the box should always match the material of the device it contains.

    Types of Junction Boxes

    Junction boxes are typically adaptable and can be used for multiple purposes, with their prices varying based on their size and application. Some common types include: surface-mounted boxes, flush-mounted boxes, and recessed boxes. Surface-mounted boxes are installed on the external walls of buildings and are typically used for outdoor lights and other fixtures that require access to electrical wiring. Flush-mounted boxes are designed to fit almost flush with a finished wall or ceiling and are used when you need a neat, clean finish. Recessed boxes are installed between two studs in an inside wall and can be used for many types of equipment such as light switches or outlets.

    IP Ratings for Junction Boxes

    Junction boxes are available in various IP ratings such as IP20, IP2X, IP40, IP44, IP54, IP55, IP65, IP66, IP67, and IP68. The IP rating of the junction box determines what type of protection it provides in terms of environmental conditions and dust penetration. The higher the number, the more secure the junction box is against external elements such as rain and dirt. For more information on IP ratings, click here.

    Get Junction Boxes at RS

    Whether you are looking for a surface-mounted, flush-mounted, or recessed junction box, RS has the right product to suit your needs. We have a wide range of junction boxes available in various sizes and materials. All our products are manufactured to the highest standards and are compliant with all relevant safety regulations. Check out our range of junction boxes below.

    722 Products showing for Junction Boxes

    CE-TEK
    250 x 120 x 255mm
    250mm
    Polyester
    120mm
    255mm
    IP66
    40
    Black
    ATEX
    -
    10 x M20, 2 x M25
    -
    -
    -
    -
    Fibox
    -
    90mm
    -
    90mm
    49mm
    IP65
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Spelsberg
    93 x 93 x 55mm
    93mm
    Polystyrene
    93mm
    55mm
    IP65
    -
    -
    -
    -
    -
    -
    -
    -
    -
    ABB
    150 x 220 x 170mm
    150mm
    Thermoplastic
    220mm
    170mm
    IP55
    -
    Grey
    -
    -
    -
    -
    -
    -
    -
    WISKA
    160 x 140 x 81mm
    160mm
    Polypropylene
    140mm
    81mm
    IP66, IP67
    -
    Grey
    -
    10
    -
    57A
    -
    -
    -
    WISKA
    85 x 49 x 51mm
    85mm
    Polypropylene
    49mm
    51mm
    IP66, IP67
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Legrand
    240 x 190 x 94mm
    240mm
    Plastic
    190mm
    94mm
    IP55
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Spelsberg
    80 x 80 x 38mm
    80mm
    -
    80mm
    38mm
    IP54
    -
    -
    -
    7
    -
    -
    -
    -
    -
    Hammond
    120 x 100 x 31mm
    120mm
    Die Cast Aluminium
    100mm
    31mm
    IP54
    -
    Black
    -
    -
    -
    -
    -
    -
    -
    Eaton
    83 x 82 x 140mm
    83mm
    Plastic
    82mm
    140mm
    IP30
    -
    White
    -
    -
    -
    -
    -
    -
    -
    ABB
    310 x 240 x 110mm
    310mm
    Thermoplastic
    240mm
    110mm
    IP65
    -
    Grey
    -
    -
    -
    -
    -
    -
    -
    ABB
    310 x 240 x 160mm
    310mm
    Thermoplastic
    240mm
    160mm
    IP55
    -
    Grey
    -
    -
    -
    -
    -
    -
    -
    Schneider Electric
    -
    -
    Polypropylene
    105mm
    105mm
    IP55
    -
    Grey
    -
    7
    -
    -
    -
    Yes
    Green Premium
    Legrand
    -
    -
    Plastic
    190mm
    290mm
    IK07, IP55
    -
    Grey
    -
    -
    -
    -
    -
    -
    -
    Gunther Spelsberg
    94 x 94 x 57mm
    94mm
    Polystyrene
    94mm
    57mm
    IP54, IP65
    0
    Grey
    -
    -
    -
    -
    -
    -
    -
    Hammond
    198 x 355 x 406mm
    198mm
    Polycarbonate
    355mm
    406mm
    IP66
    -
    -
    -
    -
    -
    -
    -
    -
    -
    nVent HOFFMAN
    -
    -
    -
    -
    -
    IP66
    -
    -
    -
    -
    -
    -
    -
    -
    -
    HENSEL
    62 x 93 x 93mm
    62mm
    Polycarbonate
    93mm
    93mm
    IP66, IP67, IP69
    0
    Grey
    -
    -
    -
    -
    -
    -
    -
    Gunther Spelsberg
    94 x 94 x 57mm
    94mm
    Polystyrene
    94mm
    57mm
    IP54, IP65
    5
    Grey
    -
    -
    -
    -
    -
    -
    -
    Legrand
    65 x 65 x 40mm
    65mm
    -
    65mm
    40mm
    IP55
    -
    Grey
    -
    7
    -
    -
    -
    -
    -
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