
BG Electrical 491 Brown 4 Terminal Junction Box With Knockout Entry 20A 57mm 2¼ Inches
491
BG Electrical 491 Brown 4-Terminal Junction Box – 20A, Compact Knockout-Entry Box for Versatile Wiring
The BG Electrical 491 is a compact 20A brown junction box with 4 terminals and knockout entry points for quick and neat installation. Ideal for light- to medium-duty wiring applications, it offers a simple and secure solution for branching electrical connections.
- Compact & Practical: 57mm (2¼") junction box with knockout entry for streamlined cable access.
- Multiple Terminals: 4-way terminal layout allows straightforward wiring of multiple circuits.
- Durable Terminal Design: Supports 3 x 1.5mm² conductors with 1 entry per terminal.
- Secure Mounting: 32mm fixing centres for easy and stable installation.
- Standard Compliant: Conforms to BS EN 60670 for quality and safety assurance.
Technical Specification
- Standard(s): BS EN 60670
- Rating: 20 Amp 250V~
- Terminal Capacity: 3 x 1.5mm²
- No. of Terminals: 4
- Dimensions: 59mm dia x 25mm (Fixing Centres: 32mm)
✅ Choose the BG 491 for a reliable, easy-to-fit junction box in residential or light commercial installations!

Ean Code | 5021166491209 |
Product | Junction Box |
Type | 4 Terminal |
Colour | Brown |
Fixing Centres | 32 mm |
Voltage | 250 V |
Width | 59 mm |
Current Rating | 20 A |
Standards | BS EN 60670 |
Height | 25 mm |
Delivery Options:
- PRIORITY DELIVERY – Next Working Day (All items in stock and ordered before 3 pm) - £7.08 inc-VAT. (£5.90 ex-VAT)
- Orders Over £100 (before VAT): We offer free standard shipping on all orders shipped to UK mainland addresses
- Orders under £100 (before VAT): Our standard delivery fee to UK mainland addresses is £5.90 ex-VAT (£7.08 inc-VAT)
*Delivery charges to JE, GY, TR, BT, IM, IV, HS, KW, ZE and certain PA post codes are £12 ex-VAT for all orders (Prices subject to change).
Items requiring specialist shipping:
- Orders containing Solar Panels, Batteries and/or Inverters: Up to 50 qty will be dispatched on a pallet and incur a £120 ex-VAT delivery charge**.
**Delivery charges to JE, GY, TR, BT, IM, IV, HS, KW, ZE and certain PA post codes are £180 ex-VAT (Prices subject to change).
Contact us if you have any further questions.