03330 112 112
Cookie Reports - Screwfix Cookie Policy

British General

20-Way Insulated Consumer Unit & 100A Switch

Product Code: 31789

22-module insulated consumer unit. Flexible busbar. BS EN 60439-3.

  • 100A Main Switch
  • 20-Way (22-Module)
  • Modern Stylish Design with Curved
  • Smooth Profile
  • Fast Installation
  • Fast Metal DIN Rail Removal
  • Fitted Spirit Level
  • Easy Fit & Easy Clean Cover
  • Backed Out & Retained Combi Terminal Screws
  • View more information

W x D x H: 497 x 117 x 234mm.



Add for Delivery

Add to saved list

Not available for deliveryOut of Stock for Delivery
Available for collection from store Store Collection Check stock in your store
Page 1 of 4
Page 1 of 4
Rated 4 out of 5 by Good value These boards have one of the best bus bars out there. They are as easy to fit as the other makes. Just make sure you take a spare rcd or rcbos as the failure rate is too high. 11 Jan 2013
Rated 5 out of 5 by Very Nice Enclosure Since the first time I installed a BG Enclosure, I loved it. Lots of room to install your modules and cables, nice easy twist lock front cover screws. 20 Apr 2012
  • 2016-02-12 T06:24:00.300-06:00
  • bvseo_lps, prod_bvrr, vn_prr_5.6
  • cp-1, bvpage1
  • co_hasreviews, tv_2, tr_2
  • loc_en_US, sid_31789, prod, sort_default
1-2 of 2
2 Questions  1 Answer

Screwfix Q&A

Ask your questions. Share your answers.

« Back
Sort by:
I see the word NEW next to it, figured you would have to be daft to lunch a plastic one this late in the year.
30 Nov 2015
Customer avatar
Newark on Trent
Read all my Q&A
, Electrician
0out of 0found this question helpful.
Was this helpful?Yes0No0
7 Sep 2015
Customer avatar
Read all my Q&A
, Other Trade
0out of 0found this question helpful.
Was this helpful?Yes0No0


It is never advisable to mix and match devices and units as they have not been tested together. We would always advise any board to only be used with devices made by the same manufacturer.
15 Sep 2015
0of 0found this answer helpful.
Was this helpful?Yes0No0
1 of 1
  • 2016-02-12 T06:21:09.646-06:00
  • bvseo_lps, prod_bvqa, vn_prr_5.6
  • cp-1, bvpage1
  • co_hasquestionsanswers
  • loc_en_US, sid_31789, prod, sort_default
1 of 1


Brand British General
Manufacturer Guarantee 1 years
Model No CUSW20-XD
No. of Ways 20
Pack Size 1
Pieces in Pack/Case 1
Product Depth 117 mm
Product Height 234 mm
Product Length 497 mm
Total Product Weight 2.4 kg