mccb

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  1. B

    Mitsubishi MCCB F-type and V-Type Operating Handles

    Does anyone know how to/if you can spoof the operating handles on Mitsubishi panels with the circuit breaker still live? Thanks
  2. C

    Electrician Jobs Supply to flats using Ryefield boards or mccb panel

    Hi all We are doing wiring to 6 flats.DNO will provide 200 amps service head on ground floor.All Swas for flat submains come to the intake area on ground floor. What is the best option for termibating those SWAs into individual switch fuses after Ryefield board or can i use MCCB panel.Do the...
    • circuitsolution
    • Thread
    • boards flats mccb panel ryefield supply supply to using
    • Replies: 9
    • Forum: Electricians Jobs
  3. N

    EATON MCCB Trip Parameters

    I am to replace an old MCCB with a new Eaton one, the circuit feeds a few boards and the current rating for the circuit is 160A. What I'm trying to understand is the 4 trip parameters that you select yourself on the breaker. These are: IR - Continuous current setting (A) tR - Number of...
    • n_gunter
    • Thread
    • circuit current delay eaton mccb setting short trip
    • Replies: 3
    • Forum: UK Electrical Forum
  4. W

    How to reset E.T.N GEB2080ffg mccb

    Hi, Guys is somebody know how to reset ETN GEB2080fg MCCB, which is stuck in middle of position and can't on or off. the product is out of UK. many thanks for your help.
    • wei zeng
    • Thread
    • how to mccb position reset
    • Replies: 9
    • Forum: The Welcome Forum
  5. astormatt

    MCB or MCCB?

    Afternoon all Hopefully someone can throw some light on a small problem i have. I am currently on a job, carrying out an eicr on a building and i am confused by the ocpd feeding it...... The set up is, main cut out in the sports hall building, then there are 5 circuits fed from the 200a main...
  6. LeeH

    Dorman Smith Load Line AA frame MCCB replacement.

    I need 1 100A MCCB and 1 switch disconnector that is obsolete, has anybody found an equivalent? They are both wont switch at all. I'll contact Dorman tomorrow but though I'd chance my look here.
  7. michaelw6

    commercial industrial zs mccb 3phase question TN-C-S.

    Im specking a large 480a cable over 160m ive done cable calcs and come up with 2x 120mm 70c armored. now Im trying to work out my max zs...with no avail. my main ze is 0.17 but my mccb is saying max zs of 0.054 and my mccb will not trip... why is it so low? its impossible to get my zs less than...
  8. D

    Mccb advice

    Hi looking to select the correct mccb for a 20kw TP pasteuriser within a kitchen the piece of equipment has inverters within it can you adjust a standard Schneider mccb to allow for a (would it be a high inrush for inverters)?
  9. A

    Chiller Tripping MCCB

    As title, we have a chiller which is tripping out an MCCB. The chiller itself doesn't have it's own OCPD, which I intend to fit at some point anyway, but that wouldn't necessarily stop anything tripping. As far as I can make out the only other things on the circuit are a few fans, a pump, and...
  10. B

    Zs to high on MCCB Protected circuit?

    Hello to the experts of the forum! I am currently checking an installation and the measured r1+r2 of the cable (4c 70mm swa of 550mtrs) is 0.8Ohms using the armourings as the cpc. Ive checked with schneider and the max Zs is 0.38 Ohms (5s disconnection time). This installation is new and i'm...
  11. Y

    mccb

    Been at a job to do some testing all okay but high impedance values. The main mdp is free with a tncs eartbing system and Sun boards are TT. As the tags suggests if vaules are higher than in the regs a tt system.should be protected with an rcd at the origin of the supply. In this case as the tt...
  12. G

    Mccb

    Anyone know the make and type of these mccbs. 4752?. could be early crabtree?
  13. N

    Max Zs of MEM MFL1253 125 MCCB

    Hi Could anyone help with this. Cant find manufacturers data anywhere. Thanks
  14. driverman

    Wylex MCCB replacement required

    Hi guys, No doubt been asked before but I'm trying to source a replacement for a Wylex 125amp MCCB > NHGPCB1253. Not in production now, possibly not for a few years now going by some comments I've seen on the IET site. Wylex Tec Dept suggested change whole panel. Not an option. I've tried Rare...
  15. A

    Obsolete MCCB panel board

    A new extension requires a new TPN mcb dis board and I was looking at serving it from the existing MCCB panel board but breakers for it are obsolete and there aren't any breakers that can be retrofitted into the board. Who would: 1) suggest the whole MCCB panel board is upgraded and serve the...
  16. D

    Merlin gerin mccb ns160N torque setting

    Hello I have an above mentioned mccb the torque setting nuts have been previously snapped off as its second hand does anyone know the torque setting it should be thanks
    • Davehaywire
    • Thread
    • mccb merlin setting torque
    • Replies: 4
    • Forum: UK Electrical Forum
  17. O

    Eaton LZM2 MCCB

    Hello peeps i have to set up a mccb. I can not seem to find instructions on what each dial does on the above. has anyone had any experience of these many thanks Paul
  18. S

    nuisance tripping of 100 NSX Schneider MCCB

    Evening Gents i have a 4 pole schneider mcb which keeps tripping intermittently the overload is set at 80A and runs in delta at around 40 A.The mcb supplies a 3 phase pump rated at approx 50kw-any one got any ideas what the problem could be . cheers.
  19. J

    MCCB incomers on paneboards

    Hi I have a question which I am sure can be answered by the chaps on here in seconds. Why do panelboards often have MCCB's as incoming devices over isolating switches? I understand this can be useful if the PFC is high at the board and an incomer like this can protect outgoing devices. Is this...
    • JameZZZ
    • Thread
    • discrimination mccb roman times
    • Replies: 9
    • Forum: UK Electrical Forum
  20. V

    Max Zs MCCB

    Hi all was just looking to know does anyone know the max Zs for a 250-400 amp MCCB I can't find it anywhere in BS7671

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