3 phase starter switch

[jules27]

Well this is why I'm here to seek advice , It can go back just as easily as i took it out it not a problem ....I understand the diagram i.e 400v coil , perhaps was really looking for some explanation as to what might be happening , which you have just told me .Initailly I thought I could just swap it like for like but that is not going to happen , so clearly more thought had to go into it .I am trying to learn .If I'm certain I'll proceed .

 

[jules27]

Er yeah , I am doing an apprenticeship , nothing to do with times being tight . It s actually for a freind , More like a favour .

Thanks for your time .

 

[netblindpaul]

jules,
Well you have answered your own Q then, contact the machine builder and get a direct replacement.

 

[bomjac]

The coil is an undervoltage coil. "U <" is the standard symbology to represent this.

 

[trong]

manual starter switch?

 

[Inteificio]

Seems simple enough.

DOL starter with undervolt protection.


So what is wrong with it, and how did you come to that conclusion?