Junction Boxes

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 Material Dimensions L x W x H IP Rating Number of Terminals Number of Ways Colour Hazardous Area Certification Cable Entry Current Rating Diameter
RS Stock No. 455-009
Mfr. Part No.1SL0876A00
BrandABB
£17.05
Each
Units
220mm 170mm 80mm Thermoplastic 220 x 170 x 80mm IP65 - - Grey - - - -
RS Stock No. 263-0388
Mfr. Part No.12540801
BrandSpelsberg
£38.83
Each
Units
254mm 180mm 90mm Polycarbonate 254 x 180 x 90mm IP66 - 32 Grey - - - -
RS Stock No. 455-756
Mfr. Part No.12804
BrandABB
£20.81
Each
Units
140mm 140mm 220mm Polycarbonate 140 x 140 x 220mm IP65 - - White - - - -
RS Stock No. 454-949
Mfr. Part No.00851
BrandABB
£3.61
Each
Units
100mm 100mm 80mm Thermoplastic 100 x 100 x 80mm IP65 - - Grey - - - -
RS Stock No. 448-7388
Mfr. Part No.6429 1 076-00
BrandKrone
£58.91
Each
Units
120mm 43mm 170mm Plastic 120 x 43 x 170mm - 20 20 Grey - - - -
RS Stock No. 151-808
Mfr. Part No.ENN05010
£5.95
Each
Units
150mm 80mm 175mm Polypropylene 150 x 80 x 175mm IP55 - 12 Grey - - - -
RS Stock No. 730-379
Mfr. Part No.GB 160 - 730379
BrandBartec
£119.97
Each
Units
160mm 160mm 90mm Glass Fibre Reinforced PET 160 x 160 x 90mm IP66 15 6 Black ATEX - 15A -
RS Stock No. 455-706
Mfr. Part No.M128120020
BrandABB
£27.90
Each
Units
- 275mm 220mm - - IP65 - - - - - - -
RS Stock No. 229-0700
Mfr. Part No.16880200.8
BrandRose
£54.65
Each
Units
121mm 121mm 75mm Glass Fibre Reinforced PET 121 x 121 x 75mm IP66 6 2 Black ATEX - - -
RS Stock No. 771-9540
Mfr. Part No.1210/5/G
BrandWISKA
£17.31
Each
Units
160mm 140mm 81mm Polypropylene 160 x 140 x 81mm IP66, IP67 - 10 Grey - - 57A -
RS Stock No. 229-0687
Mfr. Part No.15081806.8
BrandRose
£61.37
Each
Units
175mm 80mm 57mm Aluminium 175 x 80 x 57mm IP66 10 2 Grey ATEX - - -
RS Stock No. 483-5995
Mfr. Part No.6525102200
BrandKrone
£60.50
Each
Units
160mm 90mm 210mm Plastic 160 x 90 x 210mm - 50 50 Grey - - 5A -
RS Stock No. 229-0766
Mfr. Part No.15122208.8
BrandRose
£98.98
Each
Units
220mm 120mm 80mm Aluminium 220 x 120 x 80mm IP66 20 2 Grey ATEX - - -
RS Stock No. 455-075
Mfr. Part No.1SL0858A00
BrandABB
£21.03
Each
Units
310mm 240mm 110mm Thermoplastic 310 x 240 x 110mm IP65 - - Grey - - - -
RS Stock No. 263-0344
Mfr. Part No.12540901
BrandSpelsberg
£10.45
Each
Units
130mm 94mm 57mm Polycarbonate 130 x 94 x 57mm IP66 - 10 Grey - - - -
RS Stock No. 455-712
Mfr. Part No.12808
BrandABB
£23.81
Each
Units
140mm 205mm 220mm - - IP65 - - - - - - -
RS Stock No. 365-9245
Mfr. Part No.80490701
BrandSpelsberg
£4.57
Each (In a Pack of 3)
Units
93mm 93mm 55mm Polystyrene 93 x 93 x 55mm IP65 - 8 Grey - - - -
RS Stock No. 455-065
Mfr. Part No.1SL0854A00
BrandABB
£7.83
Each
Units
160mm 135mm 77mm Thermoplastic 160 x 135 x 77mm IP65 - - Grey - - - -
RS Stock No. 730-385
Mfr. Part No.GB 255 - 730385
BrandBartec
£225.26
Each
Units
255mm 250mm 120mm Glass Fibre Reinforced PET 255 x 250 x 120mm IP66 20 8 Black ATEX - 11.5A -
RS Stock No. 266-3108
Mfr. Part No.38101200
BrandBopla
£15.32
Each
Units
58mm 64mm 34mm Polyamide 58 x 64 x 34mm IP65 0, - 2 Grey Silver - - - -
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