MK 10A 3-Pole Lockable Fan Isolator Switch White Product Code: 12319

10A. 3-pole isolator with padlock and plate to prevent tampering. BS EN 60947-3: 1992.


  • Model No: K4857 WHI
Additional Information
Technical Specification
  • Brand : MK
  • Product Type : Fan Isolator Switch
  • Total Product Weight : 0.172 kg
  • Model No : K4857 WHIS2
  • Switches & Sockets Product Type : Fan Isolator Switch
  • Switches & Sockets Finish : Plastic
  • Parent Colour : White
  • Colour : White
  • Pack Size : 1
  • Switches & Sockets Profile Type : Raised Slim
  • No. of Gangs : 1
  • Manufacturer Guarantee : 1 Year Guarantee
  • Pieces in Pack/Case : 1
Product Contents
Delivery & Returns


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€16.95 Incl. 20% VAT

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MK 10A 3-Pole Lockable Fan Isolator Switch White is rated 4.3 out of 5 by 20.
Rated 3 out of 5 by from OK but things to watch for MK used to be a reliable brand but no longer. The screws in the new series are not as good and wires can appear to be secure when they aren't. There is no earth connection available so you need to use a back box connection or a separate connector to maintain earth, the switch is on when pressed in at the bottom and isolated when in at the top, opposite to a UK light switch and there is no warning red colouring on the switch. MK make one without the lock-out but Screwfix don't appear to stock it. Still it is a neat isolator switch if overpriced compared to other makes.
Date published: 2018-12-06
Rated 5 out of 5 by from Usual MK quality Got this to replace a cheaper brand switch that had broken down. Simple to fit and is a better match to the other switches. I'm sure the enclosed safety bar and padlock are useful to some, but it would be good to have the option of just buying the switch.
Date published: 2018-11-05
Rated 5 out of 5 by from Quality as always from mk This is a quality product, I have installed an extractor fan and mk is always my go to brand for household electrical things. I do think they could offer a cheaper switch without the padlock as I’ll never use that feature but I can see it’s benefit in a commercial venue.
Date published: 2017-12-08
Rated 5 out of 5 by from MK Fan isolator. I bought this at the same time as buying several MK single gang switches to keep all the switch plates matching. I did not need the lock out plate but as it is not noticeable when not in use no harm done. As ever nice MK quality and a pleasure to fit, I do like the captive screws and sensibly placed terminals.
Date published: 2017-02-17
Rated 5 out of 5 by from Good product. I always use MK in preference to other makes, essentially in this case because of reliability.
Date published: 2016-12-03
Rated 5 out of 5 by from Fan Isolator of your dreams! Ok, so the title may be a bit much, but heck, how can you make a fan isolator sound fun. You pay a bit more for MK products, but it's well worth it, never had a problem. This even comes with an isolating plate and padlock, didn't even realise that until I got it. So for some that added extra may be a bonus and for others it may be negative as they already have one, but I'm not complaining! Would be good if they did a kit without though, for those who already have the padlock etc.
Date published: 2016-11-30
Rated 4 out of 5 by from Super switch Does what it says on the packaging Design fine Functionality just as required
Date published: 2016-01-24
Rated 5 out of 5 by from Lockable Fan Isolater Switch Quality product with smiley price. My Builder and the Mr Nice man on the Screwfix recommended this .
Date published: 2015-10-21
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