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Federal Electric Stab-Lok MCBs Information
Former Community Member
Hi Folks,
I am currently doing an EICR on a large site, with many old Federal Electric boards with the Stab-Lok type MCBs. I think they would have been installed circa 1980.
I have been scouring the internet and these forums in particular for manufacturers details, specifically for type 4 Federal MCBs. There have been consistent figures posted throughout but I would like to get my eyes on a datasheet, or any other information that's floating about, if it was possible that any you may still have that kind of information in your archives!
Apologies if this is a somewhat repetitive subject as I have seen many threads over the years asking the same details.
I know I am 12 days late, but, are these the dark brown bakelite MCB's ? If so, be careful. I have had a few occasions where they entirely fail to trip under fault and have had some that do not break the contacts when in the off position. They appear to be horrendously unreliable, and the DB's are poorly constructed.
Whilst a lot of information online relates to issues with the American version, The UK made MCB's and DB's are of a very similar construction.
Information on the failures of UK manufactured kit seems to be mostly anecdotal, but from personal experience I would not consider them to be fit for purpose and would not be comfortable issuing a satisfactory EICR for an installation that has this equipment installed.
I know I am 12 days late, but, are these the dark brown bakelite MCB's ? If so, be careful. I have had a few occasions where they entirely fail to trip under fault and have had some that do not break the contacts when in the off position. They appear to be horrendously unreliable, and the DB's are poorly constructed.
Whilst a lot of information online relates to issues with the American version, The UK made MCB's and DB's are of a very similar construction.
Information on the failures of UK manufactured kit seems to be mostly anecdotal, but from personal experience I would not consider them to be fit for purpose and would not be comfortable issuing a satisfactory EICR for an installation that has this equipment installed.
