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Buy any 10 for £3.25 each on these Wylex Type B or Type C MCB's. Discount applied when all items are added to trolley. Promotion valid until 05/03/17.

Wylex 40A Single Pole Type B MCB 6kA (83787)

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

  • 40 Amp Rating
  • 6kA Short Circuit Rating
  • Dolly Reset Mechanism
  • Clamp Terminal Allows Fitting of Comb Type Busbar

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£4.03INC VAT

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Wylex 40A Single Pole Type B MCB 6kA is rated 4.8 out of 5 by 5.
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Rated 5 out of 5 by from Perfect for the job Can't understand why it was not possible for my local supplier t get one of these, and also try supply me with one that was the same, but clearly did not fit the specification. I should have gone to Screwfix first. Does the job and much cheaper than anywhere else.
Date published: 2016-12-06
Rated 5 out of 5 by from A breaker in time Perfect, just what I needed, when I needed it When it's has to be a certain make and you can get it at a moments notice, it has to be a winner
Date published: 2016-04-15
Rated 5 out of 5 by from Quality Trip Good price for quality and reliability from a trusted manufacturer
Date published: 2015-04-26
Rated 4 out of 5 by from Replacement Circuit Breaker Simple replacement of a Hagar circuit breaker that had melted due to a loose connection. Have used Wylex before and it fitted the Proteus Consumer unit without bother. I have always found Wylex mcb's reliable and expect this one to be no different. Only gave 3 stars for features because mcb's don't have any.
Date published: 2015-04-13
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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: 2017-01-27

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
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Specification
Amp Rating 40 A
Brand Wylex
Manufacturer Guarantee 1 Year Guarantee
Model No SFNHXB40
Pack Size 1
Pieces in Pack/Case 1
Power Voltage Supply 230 V
Product Depth 76 mm
Product Height 90 mm
Product Width 17.5 mm
Total Product Weight 155 kg

Short circuit: 6kA.