whats the difference with all the Mk RCBO models?

[happyhero]

Hi can anybody tell me what is the difference or where can I look it up what the differences are with all the MK RCBO model numbers?

I think as I understand it that the 69** series are the older ones and the 79** series are the newer ones but that they all fit in the same boards but after the 79 there are various numbers which I can't seem to find the meaning of ie 7932, 7936, 7938 etc. Its not anything to do with ratings in mA or Amps as far as I can see, can anybody shed some light please?

Any help appreciated.

 

[securespark]

I believe the 7900 series replaced the 6900 series around October 2009.

They are interchageable with each other. However, the switches do not align exactly with the older devices.

 

[flameport]

http://www.mkelectric.com/en-gb/Products/CP/sentry/RCBOsinglepoletypeb/typeaconly/Pages/default.aspx

The numbers are all 793_ with the last digit just being 2,3,4 etc. as the rating of the device increases from 6A upwards.
893_ range is the same, except they are C types.

 

[AndyPRK]

If fitting a 79xx to an older CU, the test button can foul the CU cover, but nothing a little trimming/filling won't sort.