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  1. S

    Lighting circuit contactor

    Hi all I am replacing a contactor in a communal block of flats I believe it for the external and internal lights. Am replacing like for like but it doesnt seem right to me. Looks like its been messed about with previously? The old contactor had an a2 terminal at the bottom aswell whereas the new...
  2. D

    Timer for contactor control

    Hello all, I am needing a din rail mount timer which will control a contactor. It will need to have a function which will allow me to have the contactor energise for 30mins. Off for 30mins. On for 30mins and repeat forever. New to this and i am getting confused with On delay, Off delay timers...
  3. F

    Domestic Fuse box makes humming sound when off-peak water heating

    Video of issue: Hi I’ve noticed a humming from my fuse box when my nightly off-peak water comes on. When I first moved in I had a similar issue, albeit louder / more high pitched. An electrician replaced the contactor at the time. It might be worth noting that that little grey box (I think...
  4. Ironbones

    Commercial Still Learning -Whats this for connected to contactor and overload.

    Hi All Could someone explain this to me please. Connected to the contactor, over load are two coils (are they ferrite chokes) please see photos. Also why only two and not three one for each phase, marked with a 65 in the photos. The motor is used to control a blower unit, that moves a bean...
  5. T

    Contactor question - multiple inputs

    Any contactor specialists out there? I have multiple machines that are connected via extraction ducting to a 2KVA 3 phase extraction fan on the external wall. At the moment I rely on machine operators to switch the extraction fan on before using any of the machines (not all machines are used...
  6. N


    hi i would like to operate an extractor fan by dimmer switch! i looking for relay or contactor which can work between 100v-230v! thx
  7. N

    Contactor control circuit

    Hi guys and gals, I am struggling to figure out how to achieve what seems to be a simple control circuit. I’ve wired a test rig and the system works as expected apart from the lamp not illuminating! What I am trying to achieve is a 13amp socket controlled contactor. Part of the control circuit...
  8. Dengar

    Contactor issues on ceiling heater circuits

    Hi I looked at a contactor schneider ict 4 pole 400v 25a. The fault was a loud knocking noise coming from the electricial riser cupboard. I suspected one of the contactors was pulling in and out rapidly (this known as chattering?) I am hoping you can point me in a direction as I'm not...
  9. J

    Trouble with a contactor

    Hi all Bit of advice needed. Got called to a job with a bunch of lights not coming on the set up is a 5 way board controlled via a timeclock and double pole contactor also has a small fuse inside of enclosure which is plug in fused wire type if you look closely at picture any ideas what could be...
  10. D

    Contactor control advise

    hi guys could you help me out please. I have been asked to put a contactor on a 100 amp supply to a dB on a food stand. The contactor needs to shut off on fire through a firetrace system already installed. 1st I was thinking of coming of the dB with a 2a breaker to feed the pressure switch...
  11. Soulsurfer

    Contactor on borehole water pump issue.

    Hi all, been asked to go look at a contactor setup on a pump which is only used for garden lawn sprinklers etc.. and as I don't often play with danfoss overloads and such I cannot work out what's up! I have no details on the load of the pump / model, make etc.. and only know that the pump was...
  12. B

    What contactor size for a 9kw electric boiler

    Hi all. Don't have much experience on this topic. Called to a job with an electric boiler. It has a dedicated 10mm supply from a 50A MCB. I narrowed down the fault the the contactor which was only feedig 1 of tge 3 elements and had scorching marks around the other 2 terminals. And is currently...
  13. Soulsurfer

    DOL starter / contactor

    Hey all, I have a couple of jobs to look at which one is apparently not working right as is a single phase supply through a D.O.L starter / contactor for I think a borehole pump and another that is running a fresh air ventilation system and is now tripping out ! The thing is I've never needed to...
  14. A

    Shunt trip in a domestic CU? Looking for a complaint way of remotely switching off power

    Hi. A thought of a domestic fire in my house terrifies me, so I installed a really sophisticated fire alarm in my house. This system optionally can even turn off the gas valve (it has a motorized arm which is installed on the main valve) and switch off electricity in case if the fire is detected...
  15. M

    Moeller contactor looking for equivalent.

    Hi, can anyone guide me to an equivalent to the 3phase Moeller contactor .DIL A-XHIC31 ? Thank you in advance.
  16. S

    Old Council Controlled Central Heating Contactor

    Hi, a friend of mine has moved to what once was a council house, and has a contactor that was apparently used by the council to control the heating. He wants to change over to an economy 7 type meter. The DNO won’t do anything until the contactor is gone, but won’t touch it themselves. It’s not...
  17. jaydub

    DOL Starter / Contactor questions...

    Hi guys, I have very limited experience with starters and contactors as my work has always been domestic and have not once come across either that I've needed to work on. Until now... I have been asked if I can update a swimming pool control panel and I think I have the general idea but am...
  18. R

    Wireless contacter for boiler enable

    I am looking for a 2 part contactor to transfer a boiler enable signal from first floor to ground floor where there is no practical way of running a cable. In short the unit needs to receive a 230v call for heat from the wiring centre and send an RF signal to a receiver contactor that will call...
  19. I

    Hot water Contactor issue

    Evening all. I admit I am not affay with the workings of contactors however, I have come across a domestic property that heating and water powered via economy 7 electric. Recently, the water is running luke warm to cold. I have tested the circuit within the property to ensure there is a...
  20. A

    Understanding lighting contactor

    Hi guys, I'm new on here, I'm a level 3 apprentice, most of my experience is commercial and domestic, my boss has just taken on a large industrial job, in which we are testing and rewiring everything, first we are doing the lights, we will be fitting some lighting contacters, which will run...
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