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 it’s 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 Diameter Dimensions Dia. x H Dimensions L x W x H Material Number of Ways IP Rating Number of Terminals Number of Entries Colour Current Rating Cable Entry
RS Stock No. 700-0802
Mfr. Part No.COMBI 308/5
BrandWISKA
£5.598
Each (In a Pack of 5)
Units
85mm 85mm 51mm - - 85 x 85 x 51mm Polypropylene 8 IP66 - - Grey - -
RS Stock No. 454-955
Mfr. Part No.00846
BrandABB
£2.91
Each
Units
100 100mm 50mm - - 100 x 100 x 50 Thermoplastic - IP65 - - Grey - -
RS Stock No. 499-5974
Mfr. Part No.KL1503510
BrandRittal
£28.89
Each
Units
- 300mm 200mm - - - Steel - IP66 - - Grey - -
RS Stock No. 365-9239
Mfr. Part No.80390701
BrandSpelsberg
£3.51
Each (In a Pack of 3)
Units
80mm 80mm 52mm - - 80 x 80 x 52mm Polystyrene 8 IP65 - - Grey - -
RS Stock No. 455-081
Mfr. Part No.00808
BrandABB
£1.45
Each
Units
65mm 65mm 32mm - - 65 x 65 x 32mm Thermoplastic - IP44 - - Grey - -
RS Stock No. 499-5930
Mfr. Part No.KL1514510
BrandRittal
£20.58
Each
Units
- 150mm 150mm - - - Steel - IP66 - - - - -
RS Stock No. 455-071
Mfr. Part No.1SL0856A00
BrandABB
£10.97
Each
Units
220 170mm 80mm - - 220 x 170 x 80 Thermoplastic - IP65 - - Grey - -
RS Stock No. 700-0798
Mfr. Part No.61779
BrandWISKA
£7.69
Each (In a Pack of 3)
Units
110mm 110mm 66mm - - 110 x 110 x 66mm Polypropylene 10 IP66, IP67 - - Black - -
RS Stock No. 905-4396
Mfr. Part No.CEP121290PA
BrandCE-TEK
£66.65
Each
Units
122mm 120mm 90mm - - 122 x 120 x 90mm Polyester 4 IP66 10 4 Black - M20
RS Stock No. 700-0789
Mfr. Part No.COMBI 308/5/S
BrandWISKA
£5.738
Each (In a Pack of 5)
Units
85mm 85mm 51mm - - 85 x 85 x 51mm Polypropylene 8 IP66 - - Black - -
RS Stock No. 730-363
Mfr. Part No.GB 122 - 730363
BrandBartec
£86.10
Each
Units
122mm 120mm 90mm - - 122 x 120 x 90mm Glass Fibre Reinforced PET 6 IP66 10 - Black 15A -
RS Stock No. 535-1432
Mfr. Part No.OTB122
BrandBartec
£70.01
Each
Units
122mm 122mm 82mm - - 122 x122 x 82mm Glass Fibre Reinforced PET - IP66 - - Black - -
RS Stock No. 365-9223
Mfr. Part No.80290701
BrandSpelsberg
£3.51
Each (In a Pack of 3)
Units
80mm 80mm 52mm - - 80 x 80 x 52mm Polystyrene 8 IP65 - - Grey - -
RS Stock No. 705-1709
Mfr. Part No.K56506GRY
£15.22
Each
Units
95mm 95mm 65mm - - 95 x 95 x 65mm - 4 IP66 4 - Grey 30A M20 Knock out
RS Stock No. 454-943
Mfr. Part No.00852
BrandABB
£4.09
Each
Units
153 110mm 66mm - - 153 x 110 x 66 Thermoplastic - IP65 - - Grey - -
RS Stock No. 455-009
Mfr. Part No.1SL0876A00
BrandABB
£16.24
Each
Units
220 170mm 80mm - - 220 x 170 x 80 Thermoplastic - IP55 - - Grey - -
RS Stock No. 263-0388
Mfr. Part No.12540801
BrandSpelsberg
£37.52
Each
Units
254mm 180mm 90mm - - 254 x 180 x 90mm Polycarbonate 32 IP66 - - Grey - -
RS Stock No. 455-756
Mfr. Part No.12804
BrandABB
£19.82
Each
Units
140mm 140mm 220mm - - 140 x 140 x 220mm Polycarbonate - IP65 - - White - -
RS Stock No. 454-949
Mfr. Part No.00851
BrandABB
£3.44
Each
Units
100 100mm 80mm - - 100 x 100 x 80 Thermoplastic - IP55 - - Grey - -
RS Stock No. 448-7388
Mfr. Part No.6429 1 076-00
BrandKrone
£56.92
Each
Units
120mm 43mm 170mm - - 120 x 43 x 170mm Plastic 20 - 20 - Grey - -