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Use of Old Serviceable M.E.M. switches and Switch Fuses.

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Evenin' all,


 I have access to old unused or used but in good as new serviceable condition, metal clad M.E.M. switches and switch fuses, 15 to 32 Amp mainly.  You know the type, popular during the 60s to 80s. Battle ship grey painted, heavily chromed switch  handles, rewirable of H.R.C. fuse carriers. Some have ceramic innards. Very good contact distance clearance and good positive action upon switching.


Can I use them in new installations thus saving money and recycling materials?


Z.


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  • 0
    PG:

    One of the developments in switchgear is that it it is still "fingerproof" IP20 when you open it. I think that the old MEM range has accessible incoming terminations?

    If so it wouldn't comply with current standards and shouldn't be used in a new installation.


    Strangely enough even back in the 60s, 70s  and 80s gear was designed so that live parts were covered to prevent electrocution. Also, with most M.E.M. switches the switch is mechanically interlocked so that the door can not be opened with the switch in the ON position. The switch has to be OFF before the door can be opened, say to replace fuses in the case of a switch fuse.


    Please notice the sheet of brown coloured insulating Paxolin that prevents the IP test finger from gaining access to live parts. Have you ever worked on a live dis. board or consumer unit? Some sparks have to do so to allow other essential circuits to continue to be used. Not good, but it does happen.

    USED MEM EXEL 15AXTN2 TPN Switch Disconnector Isolator 20Amp 3-Phase Eaton | eBay


    Z.


Reply
  • 0
    PG:

    One of the developments in switchgear is that it it is still "fingerproof" IP20 when you open it. I think that the old MEM range has accessible incoming terminations?

    If so it wouldn't comply with current standards and shouldn't be used in a new installation.


    Strangely enough even back in the 60s, 70s  and 80s gear was designed so that live parts were covered to prevent electrocution. Also, with most M.E.M. switches the switch is mechanically interlocked so that the door can not be opened with the switch in the ON position. The switch has to be OFF before the door can be opened, say to replace fuses in the case of a switch fuse.


    Please notice the sheet of brown coloured insulating Paxolin that prevents the IP test finger from gaining access to live parts. Have you ever worked on a live dis. board or consumer unit? Some sparks have to do so to allow other essential circuits to continue to be used. Not good, but it does happen.

    USED MEM EXEL 15AXTN2 TPN Switch Disconnector Isolator 20Amp 3-Phase Eaton | eBay


    Z.


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