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contactor

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  1. P

    40A single phase contactor + timer motor control

    need some advice really bee asked to wire in a timer to a swimming pool heater as it is on constant run, which I explained is how they are supposed to run. does anyone know of a single phase 230v contactor of AV-3 type I can use with a simple manual clock timer switch, or suggest any other...
  2. D

    contactor

    what size contactor (delta) do i need to run a 15kw 3 phase motor 24 v coil pls
  3. uksparks

    Time clock stopped working

    Hi, any ideas chaps? Got the time clock below, was working fine 12 months ago before works started, just gone to power up and am getting no voltage on the output, wound it up etc...
  4. S

    No Volts Protection

    Hi guys I've got a customer that's changing a centrifugal exhaust fan from a single phase version to a 2.2kw three phase version. This is currently run through a rotary isolator into a contactor with the control run through a timer no DOL present. My question is does something like an exhaust...
  5. M

    contactor burning out

    I recently fitted a new contactor three phase 10amp with 230volt coil, now it was working fine for about two weeks and now seems to have burnt out. I can not manually push the contactor in even using a screwdriver as it is solid. The overload is set to 4 amps so shouldn't be a problem with that...
  6. G

    communal lighting , contactor

    got a 240v ac set up for communal lighting in a small block of flats , call out was that outside lights not working , the contactor has 25mm incomer from db1 and 25mm outgoing to db2 incoming side also has 1.5mm t&e. i cant seem to find the operating device for the contactor any...
  7. S

    led and photocell.

    recentlly fitted 4x23w,1x50w flood,and 2x80w floods via a photocell outside. the photocell keeps failing after about 4 weeks and ive changed it twice already. does anyone know why as im confused. the cell is capable of switching 1000w so is easily suitable(so i thought).. thanks simon
  8. B

    schneider multi 9 contactor

    I feel like a dope for asking but can someone tell me if a 25 amp 4 pole schneider multi 9 contactor is rated at 25 amps per pole or 25 amps in total? Ive been having a look at the schneider characteristics page and still wasnt sure
  9. B

    Noisy contactor

    Hello I have installed a 100amp contactor in a generator control system I have designed tested and installed its a simple basic design two 230v ac contactors controlled individually by 12v 250v contact relays (12v relay used to get away with a cat5 between shed and house) and to change it all...
  10. L

    Contactor Wiring District Pump

    Please can somebody advise how I connect a contactor. I have a single phase district pump feeding multiple properties 12Amp max. LNE I have a local switch fuse spur for pump. LNE It is switched from a Biomass controller (has a 3A supply). LNE I have not connected one before and do not want...
  11. B

    Sizing Contactor to control Photovoltaic DC

    I know this is a U.K. site but I'm hoping someone will be able to answer a qn. Recently I saw a that a company was producing a remote disconnect safety system for PV panels mounted on a roof.This is to disconnect the arrays automatically if the mains is disconnected or manually after a storm or...
  12. N

    three phase contactor

    Hi Guys, please can someone help with a little problem I have........ please see photos! I would like to add a push switch to bring a motor in to turn over an engine (on a dyno) and I would like to use the contactor pictured but cannot for the life in me make it work , the single breaker appears...
  13. J

    Patio Heaters through contactor?

    Hi all, Had a customer who has 2x 1.5kw patio heaters. He is looking for these to be switched separately, in an ideal world this would be from a 2G Master seal switch. Now obviously the loading is an issue. I was thinking of maybe using 2x din rail contactors in an enclosure as the db is...
  14. infinity

    Emergency stops for LAB sockets

    I have been tasked with installing emergency stop buttons at the doorways to a few labs, so in an emergency they can hit the stop button and it will kill the power to all the sockets in the room. Now the problem is they are all rings with the DB's some distance away. Had they been radials t...
  15. B

    Remote cooker switch?

    I don't suppose anyone knows of a remote cooker switch? i.e. actual wiring and switch can be hidden behind the cooker and controlled from a switch elsewhere? It will be on a 32A circuit. It needs to be relatively small, say fit in a 35mm 2G backbox sort of size so I suspect that rules out a...
  16. joel89

    JIB Electrotechnical Certification Scheme (ECS) one for tony. demag jib hoist

    heyup tony, stripped one of our demag jib hoists down suspect contactor welded in, and i have found what appears to be a double "coil" contactor A1 , A2, B1, B2. the motor is a 2 speed hoist, with another contactor mounted at the side 2phase in from the double coil contactor dead side and 4...
  17. uksparks

    Best place to buy a new contactor

    Hi, Just got to replace an old MEM Autoline 3 with a resistor pack inside, its about 50 odd years old, Just wondered if anyone knew of anywhere that's good on prices for these? Basically just want a new one, like for like, 50A 4 Pole. Thanks,
  18. A

    3 phase contactor advice

    http://www.google.co.uk/url?sa=t&source=web&cd=1&ved=0CCoQFjAA&url=http%3A%2F%2Fwww2.schneider-electric.co.jp%2Fappl%2FElibrary%2FSETechnical_DB_INT.nsf%2F8a6913e20cdd8337492572b4000e156d%2Fdaecb55dd5d11c4349256dff002ba2f9%2F%24FILE%2F0381933_01A55.pdf&ei=MXiGUuvKK8KUhQeRjIDgCw&usg=AFQjCNHis8DmSa...
  19. E

    large circuit

    Hi all its been a while ,(too busy) i have been to a job today but a little out my comfort zone to be honest so turned it down but sitting here tonight i was wondering how you more commercial guys or gals would have designed the circuit , job was at a commercial nursery in Wolverhampton they had...
  20. U

    Din rail timer contactor wiring

    Got a call out to a pub today, outside lights weren't working. What a mess the wiring is, as usual done by a large 'reputable' electrical contractor! DB for externals fed from supply side of switch on another DB, blanks missing from, no grommets in it 6mm Earth for the 25mm tails feeding the DB...

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