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Product Details

Single pole 230V B curve MCBs.

Technical Specification
Brand MK
Manufacture ID 5910s
Type Type B
Amp Rating 10
Delivery details
Order value: Under £10 £10 & over
Express usually Next Business Day before 6pm
Due to temporary service restrictions our estimated delivery time is currently 2-3 business days
£5 Free
Turbo usually Next Business Day before 12 noon Temporarily unavailable £10 £5
Remote areas standard delivery (2-4 days) £5 Free
Order Value: Under £25 Over £25 but less than £75 £75 & Over
£10 £5 Free

Please note items delivered by our suppliers are not available for the options above. Delivery times may vary.

More about Delivery & Returns
Click & Collect details
If you are using our Click & Collect service please note the following:
  • Order online or over the phone and collect in branch from 5 minutes later.
  • Ensure you check stock is available for collection at your chosen branch.
  • Check branch opening hours to ensure you have sufficient time to collect.
  • For items not available for same day collection, place order before 9pm Mon-Fri (4pm Sun) and you can collect Next Business Day (Mon-Fri) after 3pm.
  • If we have your mobile number, we’ll send you a text when your order is ready to collect.
MK MCB 10A SP Type B is rated 4.8 out of 5 by 21.
Rated 5 out of 5 by from MK MCB 40A SP Type B GREAT price for a MK fuse good make reliable company
Date published: 2020-03-20
Rated 5 out of 5 by from 32amp mcb Brought this as needed a mcb sorted problem good price and in stock
Date published: 2020-03-17
Rated 5 out of 5 by from Mk mcb 6a type b Mk good reliable make and a great price from toolstation
Date published: 2020-03-10
Rated 5 out of 5 by from Mk 40 sp type b rcb Great price and made by MK must be good
Date published: 2020-03-10
Rated 1 out of 5 by from Faulty MCB The device was faulty from new, no voltage on the 'switched side' regardless whether the switch was on or off! This is the first ever MK product that I have purchased which has not been reliable. It makes you question whether MK manufacture and quality control is what it used to be!
Date published: 2020-02-15
Rated 5 out of 5 by from Reliable MCB's Mk Sentry are one of my favourite CU's and have used them a lot over the years. Solid and plenty of room for cable. The MCB's are reliable and a great fit. For some reason everywhere was out of stock of these MCB's but Tool Station came up trumps when i needed them.
Date published: 2020-02-08
Rated 4 out of 5 by from Different from Consumer Unit MCBs MK Sentry MCB as you would expect fits the MK Sentry Consumer Unit, however the MCB's now being sold separately are a slightly different, the switch position and on/off indication are not in the same position (despite part number still being the same).
Date published: 2020-02-02
Rated 5 out of 5 by from It's a fuse! So I went on Youtube to see how to change the fuse in my consumer unit, I watched the video and it seemed 'interesting'. I then read the comments, which basically was a bunch of electricians stating that if you have to go on youtube to learn how to change a consumer unit fuse, perhaps you shouldn't be changing it and get a professional in. I agreed with them and got an electrician in. So happy I did. Still atleast I bought the right fuse, got that right at least ;)
Date published: 2020-01-27
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