K type circuit breaker?

[RF Lighting]

I'm trying to source a circuit breaker for an older ABB TP distribution board. My wholesaler says they are no longer made and they can not source them.

I've had a look on a well known internet auction site and found a circuit breaker which appears to be the right one, but it is labelled as K 40 A.

Does anyone have any information about these circuit breakers or understand what the labelling means?

Thanks.

 

[EFLImpudence]

Mr. Google
https://en.wikipedia.org/wiki/Circuit_breaker

 

[EFLImpudence]

Lots more info.
http://www.farnell.com/datasheets/482443.pdf

 

[bhm1712]

We have ALOT of these boards at work.

Our stores never seem to have problems getting hold of these breakers - I shall enquire where they get them from!

 

[Adam_151]

Effectively 'motor rated' very similar to a C type. Max zs can be found by (230x0.95)/(12xrating).

I think at the time that was made, ABB was also producing breakers for dorman smith, and while DS has changed their manufacturer since (more than once) their current line of breakers is still compatable with their older boards, so if realy stuck try a DS breaker

http://electricsoutdoors.co.uk/images/5072ec507a398.jpg

http://dormansmithswitchgear.com/wp/?portfolio=loadmodule-mcb

 

[RF Lighting]

If you wouldn't mind that would be great. I'm always a but weary of buying from eBay, but it looks as though a k type would be suitable.

You learn something new everyday.