



Crabtree 4551 Rockergrid 2 Way 1 Module Single Pole Grid Key Switch 20A
4551
Crabtree 4551 Rockergrid 1 Module Key Switch – 2 Way, 20A Single Pole, Secure Modular Switching
The Crabtree 4551 Rockergrid Key Switch offers controlled access to circuit switching, ideal for secure areas or restricted use. With 2 way operation and a 20A rating, it’s designed for reliable performance in professional modular grid installations.
- Key Operated Control: Supplied with key to restrict access and prevent unauthorised switching.
- 2 Way Operation: Suitable for controlling a single circuit from two different locations.
- 20A Current Rating: Capable of handling higher load requirements in both commercial and residential applications.
- Single Pole Switching: Provides standard circuit control for lighting or power circuits.
- Rockergrid Safety Design: Labyrinth mechanism reduces arc flash and prevents front access to live parts.
Technical Specification
- Operation: 2 Way
- Type: Single Pole, Key Operated
- Current Rating: 20A
- Module Size: 1 Module
- Standards Compliance: BS EN 60669-1
✅ Choose the Crabtree 4551 for secure and controlled 2 way switching in modular grid installations!

Ean Code | 5017399009908 |
Range | Crabtree Rockergrid |
Product | Gridswitch Module |
Type | Key Switch Module |
Number Of Gangs | 1 |
Current Rating | 20 A |
Standards | BS EN 60669-1 |
Face Colour | White |
Ways | 2 Way |
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.