Junction Boxes

What are junction boxes used for?

Junction boxes primary purpose is to connect and protect wiring that carry electrical current ensuring safe connections and security from the elements and unqualified engineers. Junction boxes are available in a variety of sizes, material types and colours. They are found in Industrial and commercial applications.

How do junction boxes work?

A junction box upon inspection offers points of entry for lighting and electrical cable, so its very important to have the correct junction box for the application. These points of entry consist of a knockout, integrated thread or self-sealing membranes.

Internally there are mounting points for screws in each corner, use the correct masonry plugs, anchors and fixings for the surface you are mounting to. Once the junction box has been mounted and all cables prepared, wire connections can be made using the correct cable terminals and splices. A sealed box lid or box cover then provides security for all the internal components.

What materials are they made from?

Junction boxes are made from various materials such as; ABS, Aluminium, Carbon Steel, Duro-plastic, Galvanised Steel, Glass Fibre Reinforced PET, GRP, Mild Steel, Nickel-Plated Steel, Plastic, Polyamide, Polybutylene Terephthalate, Polycarbonate, Polyester, Polypropylene, Polystyrene, PVC, Stainless Steel, Steel and Thermoplastic.

Where would you find junction boxes?

  • Lighting installation
  • Housing and wiring connections

Types of Junction boxes

Typical types of junction boxes include;

  • One-gang
  • Two-gang
  • Metal pancake
  • Four-square

What IP ratings are available?

IP ratings such as; IP20, IP2X, IP40, IP44, IP54, IP55, IP65, IP66, IP67 and IP68 are available

(IP) Ingress Protection and what it means

IP rating classifies the degrees of protection provided against the intrusion of solid objects (including body parts like hands and fingers), dust, accidental contact, and water in electrical enclosures.


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Description Price Length Width Height Material Dimensions L x W x H IP Rating Number of Terminals Number of Ways Colour Hazardous Area Certification Cable Entry Current Rating Diameter Series
RS Stock No. 365-9273
Mfr. Part No.81091001
BrandSpelsberg
SGD44.905
Each (In a Pack of 2)
units
140mm 140mm 79mm Polystyrene 140 x 140 x 79mm IP65 - 12 Grey - - - - -
RS Stock No. 508-6419
Mfr. Part No.870-910/21
BrandSpelsberg
SGD167.70
Each
units
450mm 300mm 132mm Plastic 450 x 300 x 132mm IP54 / 65 - 4 - - - - - -
RS Stock No. 365-9223
Mfr. Part No.80290701
BrandSpelsberg
SGD8.257
Each (In a Pack of 3)
units
80mm 80mm 52mm Polystyrene 80 x 80 x 52mm IP65 - 8 Grey - - - - -
RS Stock No. 263-0388
Mfr. Part No.12540801
BrandSpelsberg
SGD90.99
Each
units
254mm 180mm 90mm Polycarbonate 254 x 180 x 90mm IP66 - 32 Grey - - - - -
RS Stock No. 365-9239
Mfr. Part No.80390701
BrandSpelsberg
SGD8.82
Each (In a Pack of 3)
units
80mm 80mm 52mm Polystyrene 80 x 80 x 52mm IP65 - 8 Grey - - - - -
RS Stock No. 263-0338
Mfr. Part No.12540301
BrandSpelsberg
SGD27.42
Each
units
94mm 94mm 57mm Polycarbonate 94 x 94 x 57mm IP66 - 7 Grey - - - - -
RS Stock No. 494-2863
Mfr. Part No.33490401
BrandSpelsberg
SGD11.03
1 Box of 5
Box(es)
56mm 40mm 23mm Polypropylene 56 x 40 x 23mm IP20 - 4 Grey - - - - -
RS Stock No. 616-1331
Mfr. Part No.89540201
BrandSpelsberg
SGD94.06
1 Lot of 3
Lot(s)
80mm 80mm 52mm Polystyrene 80 x 80 x 52mm IP65 5 8 - - - - - -
RS Stock No. 494-2879
Mfr. Part No.33491201
BrandSpelsberg
SGD13.81
1 Box of 5
Box(es)
85mm 85mm 37mm Polypropylene 85 x 85 x 37mm IP20 - 12 Grey - - - - -
RS Stock No. 263-0322
Mfr. Part No.12540201
BrandSpelsberg
SGD24.01
Each
units
94mm 65mm 57mm Polycarbonate 94 x 65 x 57mm IP66 - 6 Grey - - - - -
RS Stock No. 263-0287
Mfr. Part No.41090601
BrandSpelsberg
SGD24.20
Each
units
115mm 115mm 66mm - 115 x 115 x 66mm IP54 - 6 - - - - - -
RS Stock No. 616-1347
Mfr. Part No.89590201
BrandSpelsberg
SGD56.47
1 Lot of 3
Lot(s)
80mm 80mm 52mm Polystyrene 80 x 80 x 52mm IP65 - 8 - - - - - -
RS Stock No. 494-2885
Mfr. Part No.33441201
BrandSpelsberg
SGD20.46
1 Box of 5
Box(es)
85mm 85mm 37mm Polypropylene 85 x 85 x 37mm IP20 - 12 Grey - - - - -
RS Stock No. 365-9267
Mfr. Part No.80690701
BrandSpelsberg
SGD43.13
Each (In a Pack of 2)
units
110mm 110mm 67mm Polystyrene 110 x 110 x 67mm IP65 - 9 Grey - - - - -
RS Stock No. 263-0366
Mfr. Part No.12540701
BrandSpelsberg
SGD77.99
Each
units
182mm 180mm 90mm Polycarbonate 182 x180 x 90mm IP66 - 14 Grey - - - - -
RS Stock No. 365-9289
Mfr. Part No.81691001
BrandSpelsberg
SGD41.03
Each
units
180mm 180mm 91mm Polystyrene 180 x 180 x 91mm IP65 - 12 Grey - - - - -
RS Stock No. 367-0084
Mfr. Part No.49090601
BrandSpelsberg
SGD29.14
Each
units
110mm 110mm 76mm Polycarbonate 110 x 100 x 67mm IP65 - 9 - - - - - -
RS Stock No. 616-1381
Mfr. Part No.89540401
BrandSpelsberg
SGD26.80
1 Lot of 3
Lot(s)
93mm 93mm 55mm Polystyrene 93 x 93 x 55mm IP65 5 8 - - - - - -
RS Stock No. 365-9295
Mfr. Part No.83591001
BrandSpelsberg
SGD75.91
Each
units
250mm 250mm 115mm Polystyrene 250 x 250 x 115mm IP65 - 14 Grey - - - - -
RS Stock No. 263-0293
Mfr. Part No.41691201
BrandSpelsberg
SGD29.62
Each
units
165mm 165mm 76mm - 165 x 165 x 76mm IP54 - 12 - - - - - -