contactor/overloads

[connordev]

hey all,
I`m pretty new to contactor/overloads, I`ve changed a few in my time but that was just `wire for wire` when i took one cable out of the old one and put it straight into the new one. I understand the coil setup, its just the n/o, n/c contacts at the bottom I dont understand, where do these cables go/come from? Can anyone shed any light? Thanks

 

[needasparks]

can i ask. Why are you changing an overload on a contactor ? do you know what it does ?

 

[connordev]

Yes of course, the contactor/overloads were completley submerged in water. I have to change both. Would just like to know how they work.

 

[Knobhead]

View attachment 5690
Hope you can read a single line drawing

 

[silva.foxx]

http://www05.abb.com/global/scot/scot209.nsf/veritydisplay/41ba306d7b8fca1fc1257110002ea116/$file/2cdc106015b0201.pdf