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. 454-943
Mfr. Part No.00852
BrandABB
TWD183.00
Each
units
153mm 110mm 66mm Thermoplastic 153 x 110 x 66mm IP65 - - Grey - - - - -
RS Stock No. 454-983
Mfr. Part No.00810
BrandABB
TWD70.00
Each
units
40mm 80mm 80mm Thermoplastic 40 x 80 x 80mm IP44 - - Grey - - - - -
RS Stock No. 454-987
Mfr. Part No.00820
BrandABB
TWD108.00
Each
units
50mm 105mm 70mm Thermoplastic 50 x 105 x 70mm IP55 - - Grey - - - - -
RS Stock No. 455-031
Mfr. Part No.00822
BrandABB
TWD222.00
Each
units
66mm 153mm 110mm Thermoplastic 66 x 153 x 110mm IP55 - - Grey - - - - -
RS Stock No. 455-059
Mfr. Part No.1SL0862A00
BrandABB
TWD669.00
Each
units
220mm 170mm 150mm Thermoplastic 220 x 170 x 150mm IP65 - - Grey - - - - -
RS Stock No. 455-053
Mfr. Part No.00800
BrandABB
TWD46.00
Each
units
- - 35mm Thermoplastic - IP44 - - Grey - - - 60mm -
RS Stock No. 454-993
Mfr. Part No.00816
BrandABB
TWD132.00
Each
units
100mm 100mm 50mm Thermoplastic 50 x 100 x 100 mm IP55 - - Grey - - - - -
RS Stock No. 454-949
Mfr. Part No.00851
BrandABB
TWD148.00
Each
units
100mm 100mm 80mm Thermoplastic 100 x 100 x 80mm IP65 - - Grey - - - - -
RS Stock No. 455-065
Mfr. Part No.1SL0854A00
BrandABB
TWD310.00
Each
units
160mm 135mm 77mm Thermoplastic 160 x 135 x 77mm IP65 - - Grey - - - - -
RS Stock No. 183-3740
Mfr. Part No.150901
BrandABB
TWD67.00
Each
units
- - 40mm Thermoplastic - IP44 - - Grey - - - 80mm -
RS Stock No. 183-3756
Mfr. Part No.150964
BrandABB
TWD1,245.00
Each
units
310mm 240mm 160mm Thermoplastic 310 x 240 x 160mm IP65 - - Grey - - - - -
RS Stock No. 455-069
Mfr. Part No.1SL00860A00
BrandABB
TWD373.00
Each
units
160mm 135mm 150mm Thermoplastic 160 x 135 x 150mm IP65 - - Grey - - - - -
RS Stock No. 454-933
Mfr. Part No.1SL0878A00
BrandABB
TWD1,189.00
Each
units
310mm 240mm 110mm Thermoplastic 310 x 240 x 110mm IP65 - - Grey - - - - -
RS Stock No. 454-961
Mfr. Part No.1SL0834A00
BrandABB
TWD1,303.00
Each
units
160mm 310mm 240mm Thermoplastic 160 x 310 x 240mm IP55 - - Grey - - - - -
RS Stock No. 455-700
Mfr. Part No.12816
BrandABB
TWD1,791.00
Each
units
- 275mm 570mm - - IP65 - - - - - - - -
RS Stock No. 454-971
Mfr. Part No.00872
BrandABB
TWD326.00
Each
units
153mm 110mm 66mm Thermoplastic 153 x 110 x 66mm IP55 - - Grey - - - - -
RS Stock No. 183-3741
Mfr. Part No.150902
BrandABB
TWD73.00
Each
units
65mm 65mm 32mm Thermoplastic 65 x 65 x 32mm IP44 - - Grey - - - - -
RS Stock No. 454-965
Mfr. Part No.1SL0832A00
BrandABB
TWD768.00
Each
units
150mm 220mm 170mm Thermoplastic 150 x 220 x 170mm IP55 - - Grey - - - - -
RS Stock No. 183-3753
Mfr. Part No.150956
BrandABB
TWD576.00
Each
units
220mm 170mm 80mm Thermoplastic 220 x 170 x 80mm IP65 - - Grey - - - - -
RS Stock No. 183-3752
Mfr. Part No.150954
BrandABB
TWD373.00
Each
units
160mm 137mm 77mm Thermoplastic 160 x 137 x 77mm IP65 - - Grey - - - - -