FREE DELIVERY OVER £50
CLICK & COLLECT
FREE Returns
Screwfix Gift Cards a perfect gift

Latest Service Update

MULTIBUY DEAL BUY ANY 5+ FOR £3.00 EACH ON SELECTED WYLEX MCBS - View all products

Wylex 40A SP Type B MCB (83787)

£ 4.39INC VAT

Add to basket for...

Check stock in your local store

Wylex 40A SP Type B MCB (83787)

40A B curve 6kA single pole 230V AC MCB.

  • Fitting
  • Type B Curve
  • Dolly Reset Mechanism
  • Clamp Terminal Allows Fitting of Comb Type Busbar

More Info

View all: Wylex MCBs

£4.39INC VAT

Add to basket for...

Check stock in your local store

Wylex 40A SP Type B MCB is rated 4.8 out of 5 by 10.
  • y_2020, m_7, d_9, h_15
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.10
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_10
  • loc_en_GB, sid_83787, prod, sort_[SortEntry(order=FEATURED, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_screwfix
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getAggregateRating, 13ms
  • REVIEWS, PRODUCT

Add to saved list...

Save
Rated 5 out of 5 by from Great price Great price for a quality product cheaper than other merchant s
Date published: 2018-12-16
Rated 5 out of 5 by from Wylex type B MVB As original. Easy fitting. Good price.I found same product on ebay more expensive for used MCBs.
Date published: 2018-12-07
Rated 5 out of 5 by from Works brilliantly It is cheap, and it fits well, and works well. Can't expect more.
Date published: 2018-12-06
Rated 5 out of 5 by from Does what it says on the tin Used this for a new circuit feeding a garage consumer unit from an existing Wylex consumer unit, it worked well, easy to use and to install.
Date published: 2018-06-26
  • y_2020, m_7, d_9, h_15
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.10
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_10
  • loc_en_GB, sid_83787, prod, sort_[SortEntry(order=FEATURED, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_screwfix
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getReviews, 24ms
  • REVIEWS, PRODUCT

Will this Wylex B40 fit a Volex box that has VB40 mcb's in?

Asked by: Picassoguy

Will this fit in consumer unit NHRS6304

Asked by: Gris2222
Hi, Yes this MCB will fit the NHRS6304 consumer unit. Thanks for your interest in Wylex products
Answered by: Wylex Expert
Date published: 2019-04-13

Like for like

Will this replace a NB40 40 amp type 2.
Asked by: pietown
Hi, No these NHX MCBs cannot be used to replace the old NB range of MCBs. There is no alternative available which can be used to replace the NB product.
Answered by: Wylex Expert
Date published: 2018-02-11

Will this MCB replace a Proteus 640B?

Asked by: Tartandude
Under the BEAMA directive we would not allow this as they have not been tested in these units and it would also invalidate any warranty. Wylex devices should be used in Wylex Consumer units only.
Answered by: Wylex Expert
Date published: 2018-01-27

will the above replace NSB40

Asked by: ASKING
Hi, The MCB you are referring to is an NHXB40 and cannot be mixed with NSB MCBs. The NSB MCB should be replaced with another NSB or alternatively all the MCBs in the board should be replaced using NHXB MCBs.
Answered by: Wylex Expert
Date published: 2016-03-13
  • y_2020, m_7, d_10, h_15CST
  • bvseo_bulk, prod_bvqa, vn_bulk_3.0.10
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_5
  • loc_en_GB, sid_83787, prod, sort_[SortEntry(order=LOCALE, direction=DESCENDING), SortEntry(order=FEATURED, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_screwfix
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getReviews, 13ms
  • QUESTIONS, PRODUCT
  • bvseo-msg: BV SEO Content for this product did not include verbose reviews.;
Specification
Amp Rating 40 A
Brand Wylex
Breaking Capacity 6 kA
CSU Device MCBs
Curve Type Type B
Manufacturer Guarantee 1 Year Guarantee
Model No NHXB40
No. of Phases Single-Phase
Number of Poles Single Pole
Pack Size 1
Pieces in Pack/Case 1
Power Voltage Supply 230 V
Product Type MCB