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. 455-009
Mfr. Part No.1SL0876A00
BrandABB
HK$197.25
Each
units
220mm 170mm 80mm Thermoplastic 220 x 170 x 80mm IP65 - - Grey - - - - -
RS Stock No. 730-385
Mfr. Part No.GB 255 - 730385
BrandBartec
HK$2,907.28
Each
units
255mm 250mm 120mm Glass Fibre Reinforced PET 255 x 250 x 120mm IP66 20 8 Black ATEX - 11.5A - -
RS Stock No. 455-700
Mfr. Part No.12816
BrandABB
HK$489.14
Each
units
- 275mm 570mm - - IP65 - - - - - - - -
RS Stock No. 905-4393
Mfr. Part No.CEP807555PA
BrandCE-TEK
HK$751.00
Each
units
80mm 75mm 55mm Polyester 80 x 75 x 55mm IP66 5 2 Black ATEX M20 - - -
RS Stock No. 700-0789
Mfr. Part No.COMBI 308/5/S
BrandWISKA
HK$66.178
Each (In a Pack of 5)
units
85mm 85mm 51mm Polypropylene 85 x 85 x 51mm IP66 - 8 Black - - - - -
RS Stock No. 483-5995
Mfr. Part No.6525102200
BrandKrone
HK$650.71
Each
units
160mm 90mm 210mm Plastic 160 x 90 x 210mm - 50 50 Grey - - 5A - -
RS Stock No. 455-712
Mfr. Part No.12808
BrandABB
HK$201.24
Each
units
140mm 205mm 220mm - - IP65 - - - - - - - -
RS Stock No. 700-0811
Mfr. Part No.COMBI 607/5
BrandWISKA
HK$91.077
Each (In a Pack of 3)
units
110mm 110mm 66mm Polypropylene 110 x 110 x 66mm IP66, IP67 - 10 Grey - - - - -
RS Stock No. 381-0614
Mfr. Part No.74040201
BrandSpelsberg
HK$580.88
Each
units
- - - - - IP65 - - - - - - - -
RS Stock No. 390-902
Mfr. Part No.89540601
BrandSpelsberg
HK$106.845
Each (In a Pack of 2)
units
110mm 110mm 67mm Polystyrene 110 x 110 x 67mm IP65 5 9 - - - - - -
RS Stock No. 730-379
Mfr. Part No.GB 160 - 730379
BrandBartec
HK$1,511.10
Each
units
160mm 160mm 90mm Glass Fibre Reinforced PET 160 x 160 x 90mm IP66 15 6 Black ATEX - 15A - -
RS Stock No. 905-4396
Mfr. Part No.CEP121290PA
BrandCE-TEK
HK$797.68
Each
units
122mm 120mm 90mm Polyester 122 x 120 x 90mm IP66 10 4 Black ATEX M20 - - -
RS Stock No. 504-4550
Mfr. Part No.235471
BrandBartec
HK$1,101.84
Each
units
122mm 120mm 90mm Glass Fibre Reinforced PET 122 x 120 x 90mm IP66 9 - - ATEX - 21A - -
RS Stock No. 455-716
Mfr. Part No.12814
BrandABB
HK$372.32
Each
units
- 275mm 370mm - - IP65 - - - - - - - -
RS Stock No. 455-750
Mfr. Part No.12818
BrandABB
HK$614.44
Each
units
- - - - - IP65 - - - - - - - -
RS Stock No. 229-0744
Mfr. Part No.16122209.8
BrandRose
HK$1,752.38
Each
units
91mm 120mm 90mm Glass Fibre Reinforced PET 220 x 120 x 90mm IP66 20 2 Black ATEX - - - -
RS Stock No. 842-8481
BrandRS PRO
HK$512.96
Each
units
150mm 150mm 120mm Steel 150 x 150 x 120mm IP65 - - Grey - - - - -
RS Stock No. 860-4584
Mfr. Part No.JB101006HC
BrandRittal
HK$956.06
Each
units
250mm 150mm 250mm Carbon Steel 250 x 150 x 250mm IP66 - - Grey - - - - -
RS Stock No. 448-7388
Mfr. Part No.6429 1 076-00
BrandKrone
HK$526.85
Each
units
120mm 43mm 170mm Plastic 120 x 43 x 170mm - 20 20 Grey - - - - -
RS Stock No. 151-808
Mfr. Part No.ENN05010
HK$80.14
Each
units
150mm 80mm 175mm Polypropylene 150 x 80 x 175mm IP55 - 12 Grey - - - - -
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