mccb

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  1. P

    100 A MCCB feeding DB with various RCBO's tripping before they do?

    Hi I have a problem on a site that I have inherited. The fault is that a 100A MCCB is tripping indeterminately. The MCCB feeds a DB which has several cct’s none any higher than 32A and all cct’s are RCBO’s the RCBO’s are not tripping yet the MCCB is. The MCCB has been changed recently...
  2. spud1

    Which Max EFL table to use for a BS EN 60947-3 MCCB?

    Hi which maximum permitted EFL table should I use for a BS EN 60947-3 MCCB? Is it table 41.3 BS7671?
  3. F

    Static generator Mccb

    Hi guys, my head has gone blank. I have a generating set 400v 345a flc what is the max distance the Mccb can be from the generator stator lugs. i seem to remember 3 mtrs but something in my mind Is telling me it can be greater under certain rules. many thanks
  4. C

    Hager H125D MCCB - What board/ Main Switch???

    I need to find a main switch to fit an MCCB board. There is no writing or stickers on the board. All I know it that the breakers in it are Hager H125Ds Can anyone shine any light on this? Thanks
    • cllelectrical
    • Thread
    • board hager main main switch mccb switch
    • Replies: 11
    • Forum: UK Electrical Forum
  5. W

    mccb Max zs 80% rule

    Hi all I have an EICR underway and have to compare some ZS values for readings on some circuits protected by MCCB's i have the manuf instructions with the max ZS values for the devices but do they have to be measured against the 80% value similiar to MCB's? doesnt say anything in the...
  6. Y

    Mccb

    Can anyone help with a query that came up at work today? A colleague of mine tripped a 100A MCCB by going across two busbars of the board it was feeding with a test lead. Don't ask me why, no idea what the reason was. The disconnect in the board appears to be okay, as does the MCCB. Somebody...
  7. P

    MCCB as a switch disconector

    Can an MCCB be used as mains isolating switch in a 3 ph board.
  8. P

    Mem memshield 2 mccb, mgl, mel, mfl. Memshield 1 eaton mcb,s rcbo,s

    Hi looking to buy any mem mccb,s mgl,mfl,mel range. Also triple pole memshied 1 , 2 eaton mcb,c. An rcbs just the odd one or job lot new or used regrds paul
  9. L

    4 pole mccb

    Hi all just wondering if anyone knows if it would be possible to feed two single phase supplies through a 4 pole mccb? thanks gary
  10. D

    400A mem mccb

    Can anyone help. I'm on the hunt for a mem 320A mccb gls3320aam or a mem 400A mccb gls3400aam. Found some possibles on eBay but they were for a g series and I wasn't sure if they'd fit my 600A panel board. I also need something ASAP! Thanks andy
  11. S

    Merlin Gerin MCCB

    Off hand does anyone know the BS no and the kA rating for a 125 A .Its about a 30 year old installation so BS 3871 equivelent.
  12. C

    Doorman Smith MCCB 200A

    As title, 200a 3pole MCCB, brand new never installed. offers. 07795 331079
  13. D

    Installing a 200a MCCB in a proteus 3phase board.

    Hi everyone, I'm a newly qualified electrician and im working for a company that have asked to the fit a mccb, my boss sent me this email today and im not completely sure what he means, any help would be great as I really dont want to call him tomorrow asking how to install it. Any help would...
  14. R

    Mccb rating

    Regarding mcb and mccb What is the lowest rating of mccb available
  15. F

    MCCB Boards

    Hi people, Could one of you lovely people tell me the maximum cable size that you can fit in a three phase new style wylex circuit breaker. I have a board to change that contains a couple of 16mm 25mm cables but also one 50mm and the main incomer is 50mm also! What are people using with...
  16. D

    What make is this MCCB??

    Hi im testing a community centre which contains an old 4 way section board. The MCCBs have handles on them and the word 'reset' in different languages. Its approx 35 years old. Anyone know what make it is, there's no writing on it inside or out. sorry photo is wrong way round Thanks
  17. D

    Terasaki MCCB

    Hi does anyone have a list of Terasaki MCCB max ZS. In particular im looking for the max Zs for a type TO-100BA, 40A, 3-pole. ive looked at the terasaki site but it doesnt show the measurements for these. they are from circa 1984. thanks
  18. C

    Wanted large quantities of used MCB, MCCB and ACB

    If anyone has any items they stripped out and would like to sell please contact me. Only large quantities considered. Any make as long as in good condition
    • cleary1981
    • Thread
    • large mcb mccb number phone please stock used wanted
    • Replies: 32
    • Forum: For Sale and Wanted Forum
  19. S

    Hyundai MCCB

    Hi All, I came across this make of breaker and was wondering if anyone has used? I am swapping out old proteus and was thinking of using these instead.
  20. B

    Hager mccb probs

    Hager 100A MCCB new type (brand new) is tripping when attempting to switch on - new installation. Circuit is feeding a SWA to a DB - No Load on DB and cables of SWA meggering out ok . Thinking the MCCB may be faulty - anyone had probs with these?
    • brizospark
    • Thread
    • hager mccb
    • Replies: 2
    • Forum: Australia

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