Main Categories

Alarms
Cable and Accessories
Cable Management
Heating and Ventilation
Industrial Controls
Lamps and Lighting
Switchboard & Distribution
Tools and Fixings
Wiring Accessories
*Best deals of the month

Browse Main Categories

  • Alarms
    • Carbon Monoxide Alarms
    • Heat Alarms
    • Modules
    • Multi-Sensor Alarms
    • Smoke Alarms
  • Cable and A
    ccessories
    • Accessories
    • Arctic Grade Flex
    • Double Insulated Singles
    • Flexible Cables
    • Flexitail
    • FP PLUS
    • FP200G
    • Hi Tuf cable
    • Price On Application
    • Single Core LSF
    • Single Core PVC
    • Steel Wired Armoured
    • Twin and Earth LSF
    • Twin and Earth PVC
  • Cable
    Management
    • Flexible Conduit
    • PVC Boxes
    • PVC Capping
    • PVC Conduit
    • PVC Trunking
    • Slotted Channel
    • Steel Cable Ladder
    • Steel Cable Tray
    • Steel Cable Trunking
    • Steel Conduit
  • Heating
    and Ventilation
    • Domestic Fans
    • Ducting and Grills
    • Humidistat
    • Pullcord
    • Timer
  • Industrial
    Controls
    • Adaptable Boxes
    • Enclosures
    • Industrial Plugs
    • Rotary Isolator
  • Lamps
    and Lighting
    • Accessories
    • Bezels
    • Downlights
    • Emergency
    • Emergency LED Lighting
    • Floodlights
    • Frames
    • LED Batten
    • LED Bulkhead
    • LED GU10 Lamps
    • LED Lamps
    • LED Linear
    • LED Panels
    • LED Strip & Drivers
    • Marshalling Box
    • Outdoor Lighting
    • Photocells
    • PIR Sensors
  • Switchboard &
    Distribution
    • Blanking Plates
    • Contactor
    • Distribution Board
    • MCBs
    • MCCBs
    • Metal Consumer Units
    • Modules
    • RCBOs
    • RCDs
    • Surge Protection
    • Time Switch
  • Tools and
    Fixings
    • Anchors
    • Armeg
    • Bending Springs
    • Cable Ties
    • Cantilever Arm
    • Channel Nuts
    • Channel Support
    • CK
    • Drill Bits & Sets
    • End Caps
    • Full Nuts
    • Labels
    • Non Drill Anchors
    • Roofing Nuts and Bolts
    • Screws
    • Square Plate Washer
    • Stud Connector
    • Trunking Fire Clip
    • Wall Plugs
    • Washers
    • Wedge Nuts
    • Wera
  • Wiring
    Accessories
    • Boxes
    • Ceiling Accessories and Lamp Holders
    • Data
    • Metal Clad
    • Sockets
    • Spur/Connection Unit
    • Switches
    • Weatherproof
  • Returns & Refunds
  • Terms and Conditions
  • Privacy Policy
  • Contact Us
  • My Account
  • Basket
01923 616998
ex VAT
inc VAT
  • Menu
01923 616998
watford@rapidelectrical.co.uk
My Account
£44.12 3 items
  • Alarms
    Carbon Monoxide Alarms
    Heat Alarms
    Modules
    Multi-Sensor Alarms
    Smoke Alarms
  • Cable and Accessories
    Accessories
    Arctic Grade Flex
    Double Insulated Singles
    Flexible Cables
    Flexitail
    FP PLUS
    FP200G
    Hi Tuf cable
    Price On Application
    Single Core LSF
    Single Core PVC
    Steel Wired Armoured
    Twin and Earth LSF
    Twin and Earth PVC
  • Cable
    Management
    Flexible Conduit
    PVC Boxes
    PVC Capping
    PVC Conduit
    PVC Trunking
    Slotted Channel
    Steel Cable Ladder
    Steel Cable Tray
    Steel Cable Trunking
    Steel Conduit
  • Heating and Ventilation
    Domestic Fans
    Ducting and Grills
    Humidistat
    Pullcord
    Timer
  • Industrial
    Controls
    Adaptable Boxes
    Enclosures
    Industrial Plugs
    Rotary Isolator
  • Lamps and Lighting
    Accessories
    Bezels
    Downlights
    Emergency
    Emergency LED Lighting
    Floodlights
    Frames
    LED Batten
    LED Bulkhead
    LED GU10 Lamps
    LED Lamps
    LED Linear
    LED Panels
    LED Strip & Drivers
    Marshalling Box
    Outdoor Lighting
    Photocells
    PIR Sensors
  • Switchboard & Distribution
    Blanking Plates
    Contactor
    Distribution Board
    MCBs
    MCCBs
    Metal Consumer Units
    Modules
    RCBOs
    RCDs
    Surge Protection
    Time Switch
  • Tools and Fixings
    Anchors
    Armeg
    Bending Springs
    Cable Ties
    Cantilever Arm
    Channel Nuts
    Channel Support
    CK
    Drill Bits & Sets
    End Caps
    Full Nuts
    Labels
    Non Drill Anchors
    Roofing Nuts and Bolts
    Screws
    Square Plate Washer
    Stud Connector
    Trunking Fire Clip
    Wall Plugs
    Washers
    Wedge Nuts
    Wera
  • Wiring
    Accessories
    Boxes
    Ceiling Accessories and Lamp Holders
    Data
    Metal Clad
    Sockets
    Spur/Connection Unit
    Switches
    Weatherproof

Browse

My Account

£44.12 3 items
View basket “ASHLEY J401 30A JB” has been added to your basket.
Awaiting product image

Box, Junction 4 Terminal

Part Number: 491-01 Category: Junction boxes

POACall for price

  • Branch Stock
  • Data Sheets
Rapid Electrical Slough
Rapid Electrical Watford60
Technical Data Sheet
Catalogue Page

Related products

Placeholder

ASHLEY J301 20A JB

£ 5.45 6.54 Add to basket

Wiska MJB2 Gel Insl Junction Box Blue

£ 2.50 3.00 Add to basket
Placeholder

CLICK 20A SMALL ROUND JB-WHITE

£ 3.25 3.90 Add to basket
Placeholder

ASHLEY J601 20A JB(6WAY)

£ 2.25 2.70 Add to basket

01923 616998
watford@rapidelectrical.co.uk
Trade City, Unit 3,
Off Wiggenhall Rd,
Thomas Sawyer Way,
Watford WD18 0EZ
Information
  • About Us
  • Delivery Information
  • Returns & Refunds
  • Terms and Conditions
  • Privacy Policy
  • Contact Us
Payments
Follow Us
Powered By

© 2025 © NG15 Limited 2022

© 2025 This website was designed and built by NG15 Ltd