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Topic Title: Faulty MK MCB's
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Created On: 23 February 2009 05:07 PM
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 23 February 2009 05:07 PM
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AMN

Posts: 644
Joined: 29 June 2007

Is it just me, but I am getting fed up with new MK, particularly 6A B type MCB's being faulty. When you go to energise the circuit the lever just flops around and won't stay in the on position and no its not on faulty circuits. I must have had 5 or 6 in the last three months, but the wholesaler says they are not aware of a problem (don't you just love them) I have also noticed a fair increase in the amount of fittings I am having to return, that are either faulty on fitting or go wrong a few weeks down the line which is particularly annoying. Perhaps its just the 'China Syndrome' we shouldn't let them get away with it. Suggestion, as part of our contract of agreeing to purchase their equipment they agree to pay for our time to replace their faulty products. Dream on eh ?

AMN
 23 February 2009 05:25 PM
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aligarjon

Posts: 2735
Joined: 09 September 2005

Yes, ive had a couple of mk B6 breakers like that as well. one of them i took back out and it started latching properly. i refitted it and it worked fine. i changed it anyway to be sure but its bloody annoying. i had a couple of mk B32 breakers just fail after being in service for a few months as well a couple of years ago, no problems since thankfully. Gary

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Specialised Subject. The Bleedin Obvious. John Cleese
 23 February 2009 07:07 PM
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JZN

Posts: 551
Joined: 16 November 2006

I use mostly crabtree breakers. Like your MK experience I've had in the last year quite a number of failures. They work fine for a while, then you come to isolate the circuit to work on it. Upon closing the breaker again to re energise, the switch action is fine but there's no volts at the output terminal!

Jon
 23 February 2009 07:09 PM
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peteTLM

Posts: 3084
Joined: 31 March 2005

thats nothing.
ive just had to replace all the battery packs in 15 emergency lights made by SUPALUX.
They have gone wrong after just 5 months in service.

They sent replacement battery packs via my wholesaler, without any explanation or apology, and have kept my original gear tray i sent them to confirm my diagnosis.

I now have to chase them for the gear tray or a new light, and yes the best bit is, there are another 6 of these fittings which are failing now as well.
Already 2 central london visits because of these crap lights, looking at another 1 at least.
Dont buy supalux products.

P

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Lack of planning on your part doesn't make it an emergency on mine....

Every man has to know his limitations- Dirty Harry
 23 February 2009 09:39 PM
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antric2

Posts: 1034
Joined: 20 October 2006

I have an issue with a socket supplier that is being dealt withat the moment.
I have replaced around 30 d\gang sockets over last 12 months. Two of my customers now insist that I replace the whole installation with new.
I have decided to informally approach the supplier as I now want covering for my labour costs as I expect many more failures in the future.
I have to do it through my wholesaler who supports my action but if the supplier does not make me an offer to cover my cost then I will go through court.
It is not money but principle that is driving me.
The supplier said the same that now one else had problems but I got numerous responses when I asked the questions on this forum.
Regards,
Antric
 23 February 2009 09:56 PM
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ChrisGilbert

Posts: 136
Joined: 12 January 2003

Originally posted by: aligarjon

Yes, ive had a couple of mk B6 breakers like that as well. one of them i took back out and it started latching properly. i refitted it and it worked fine. i changed it anyway to be sure but its bloody annoying. i had a couple of mk B32 breakers just fail after being in service for a few months as well a couple of years ago, no problems since thankfully. Gary


I have had exactly the same thing with 2 MK B6 MCBs. I have just checked the Sentry Catalogue as I thought it may be a design intention to indicate that the MCB was not locked on the DIN rail or something but no such cleverness so there must have been a bad batch. I complained to the MK helpline last week about high resistance switches on some sockets. Once I had explained what I meant in noddy terms (ie 0.2 to 0.3 ohms from line terminal on back to socket terminal on front), they claimed not to have had any complaints and agreed to accept them back for examination. I will send them a faulty MCB as well and suggest we all do the same.
 23 February 2009 10:18 PM
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Testit

Posts: 2962
Joined: 06 August 2007

Yes actually MK are the only fauty ones I have had.. no a lie, some wylex 3036 adaptors I have had faulty as well.... nuisance value...

Edit: makes you wonder about their compliance really.

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Online Services - http://propertydevelopment.org.uk

Experience can sometimes show that cost prevails over quality and safety, such little self-value that people hold.

Edited: 23 February 2009 at 10:18 PM by Testit
 10 June 2009 02:46 PM
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peteTLM

Posts: 3084
Joined: 31 March 2005

on this thread regarding defective products, i made a comment regarding supalux lights a few months ago.

I now have to say that supalux customer service is one of the best i have encoutered. They have offered to replace the lights as a solution with a different product.
The problem was handled by the managing director himself.

The problem was with the specification and operating temperatures of the fitting and its effect on the battery packs. My requirements were not passed to the supplier via the wholesaler, hence the shortfall.

Many thanks to supalux for resolving the problem.

All the technical reasons were never passed either way by the wholesaler. So the moral of the story is to get the story from the horses mouth.


P (for plonker today)

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Lack of planning on your part doesn't make it an emergency on mine....

Every man has to know his limitations- Dirty Harry
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