





BG Electrical 603 Brown 3 Terminal Junction Box With Selective Entry 30A 89mm 3½ Inches
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BG Electrical 603 Brown 3-Terminal Junction Box – 30A, Selective Entry Design for Flexible Ring or Radial Wiring
The BG Electrical 603 is a durable 30A brown junction box with three robust terminals and a smart rotating cover for selective entry. Designed for ease of installation in ring or radial wiring, it provides a versatile solution where secure terminations and cable routing flexibility are key.
- Rotating Cover with Marked Entry Points: Selective entries clearly indicated by numbers and symbols for easy identification.
- Flexible Cable Access: Knockout lips accept twin cables and rear entry points aid tidy installation.
- Robust Terminal Design: Generous capacity slot terminals with large grub screws for reliable clamping.
- 30A Rated Performance: Suitable for medium-duty installations up to 250V~.
- Built to Last: Manufactured in brown urea and conforms to BS EN 60670 for assured quality.
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)
✅ Opt for the BG 603 for adaptable, clearly marked junctions that simplify installation and enhance reliability!

Ean Code | 5021166603206 |
Product | Junction Box |
Type | 3 Terminal |
Colour | Brown |
Fixing Centres | 50.8 mm |
Voltage | 250 V |
Width | 89.5 mm |
Current Rating | 30 A |
Standards | BS EN 60670 |
Height | 36 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.