Wiring Diagram for 3-Phase Contactor with Two Switches - Ahmed Hassan

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Discussion Overview

The discussion revolves around the request for a wiring diagram for a 3-phase contactor that includes two switches—one for starting and one for stopping the contactor. The context includes practical applications in electrical wiring and control systems.

Discussion Character

  • Technical explanation
  • Debate/contested

Main Points Raised

  • Ahmed Hassan requests a wiring diagram for a 3-phase contactor with specific functionalities.
  • Some participants provide links and diagrams to assist Ahmed with his request.
  • A question is raised about the function of terminals 21 and 22 on the contactor, leading to a discussion about terminal numbering and functions.
  • Ahmed identifies that terminals 21 and 22 correspond to normally closed connections, while terminals 13 and 14 are normally open, based on his findings regarding a Moeller contactor.
  • One participant suggests that Ahmed should have attempted to find the information independently before posting the question.

Areas of Agreement / Disagreement

There is no clear consensus on the specifics of the contactor's terminal functions, as participants express uncertainty about the model Ahmed is using. Some participants provide assistance, while others question the need for the thread.

Contextual Notes

The discussion is limited by the lack of specific information about the contactor model, which affects the ability to provide definitive answers regarding terminal functions.

ahmedahmed
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Hi everybody

I am new here but I hope that you help me.

I need wiring diagram for 3-phase contactor with two switches one for start (give the contactor the signal) and the other for stop.

when the electricity went off , the contactor should stop working

it's too simple not complicated

Thanks

Best Regards
Ahmed Hassan
 
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please refer to attached diagram.
 

Attachments

Ohhh

thanks for Don and m.s.j

it's really helped me

Thanks
 
What is case of the two terminals 21 and 22 in the contactor ?
 
We don't have any idea because we don't know which contactor you have. What makes you think all contactors have the same terminal numbers?
 
NO
I know that's every contactor has it's only terminal numbers but...

If there is 21 and 22 number in contactor , what is the situation for?

No (Normally Open)
Nc (normally Closed)

Thanks
 
I have no way of knowing. What is the brand and model number of the contactor?
 
Thanks

I'm looking in moeller contactor and found the thing I need.

I found that the connection terminal for (21 and 22) normally Closed and the terminals (13 and 14) Normally Open if the contactor not work

Thanks again
 
  • #10
Just a sugestion, but perhaps in the future you could at least make a token effort to find the information yourself before stating a thread here. Obviously the information was available to you; this could have been finished a week ago.
 

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