





BG Electrical 603W White 3 Terminal Junction Box With Selective Entry 30A 89mm 3½ Inches
603W
BG Electrical 603W White 3-Terminal Junction Box – 30A, Selective Entry with Rotating Cover for Easy Cable Management
The BG Electrical 603W is a white 3-terminal 30A junction box designed for flexible and secure wiring. Featuring a rotating cover with clearly marked entry options and robust terminals, it's ideal for use in ring or radial circuits where smart cable routing and clean presentation are essential.
- Rotating Cover with Clear Markings: Selective entries are numbered and symbolised for hassle-free identification during installation.
- Adaptable Cable Access: Knockout lips for twin cables and rear entry knockouts in the base simplify cable routing.
- Strong Terminal Configuration: Generous slot terminals with large grub screws provide a secure grip on conductors.
- Medium-Duty Rated: Rated for 30A 250V~, ideal for domestic and light commercial wiring.
- Durable Build: Moulded in tough white urea and compliant with BS EN 60670 for lasting performance.
Technical Specification
- Standard(s): BS EN 60670
- Rating: 30 Amp 250V~
- Terminal Capacity: 4 x 4.0mm²
- No. of Terminals: 3
- Dimensions: 89.5mm dia x 36mm (Fixing Centres: 50.8mm)
✅ Trust the BG 603W for a clean, adaptable, and compliant solution in selective wiring junctions!

Ean Code | 5021166603107 |
Product | Junction Box |
Type | 3 Terminal |
Width | 88.9 mm |
Current Rating | 30 A |
Face Colour | White |
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.