Discuss contactor rating in the UK Electrical Forum area at ElectriciansForums.net

Interesting thread, my thoughts are that a contactor is either open or closed and used to switch on/off and for switching high loads.
whereas a relay is for control switching with a common and n/o n/c. So a relay can be used as a contactor but not the other way round.

So if I'm right, the picture is of a contactor as it has no common, although it has independent n/o n/c contactors it cant switch from one to the other.
 
Last edited:
Interesting thread, my thoughts are that a contactor is either open or closed and used to switch on/off and for switching high loads.
whereas a relay is for control switching with a common and n/o n/c. So a relay can be used as a contactor but not the other way round.

So if I'm right, the picture is of a contactor as it has no common, although it has independent n/o n/c contactors it cant switch from one to the other.

Relays can have single contacts or any combination of contacts though. Daz
 

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