Where can i find a 100A/63A change over relay/contractor????

[energizedelec]

Anyone know where can i find a 100A/63A change over relay/contractor????

hears a little diagram so you know what im after

 

[Knobhead]

Have you looked on Google?

PS, what do you want it for?


PPS, dont wire it up to a contractor, he'll get up set.

 

[spark 68]

The contactors I have used before usually just have N/O and N/C contacts rather than C/O, but you can wire one side of one pair of each to give a 'common', this will then give you the C/O function.

 

[Lighthouse Phil]

Contactors | Buy Contactors & other Contactors parts | RS Components


Sorry, didn't read the OP right, but the above link is for contactors etc.....

You could put 2 contactors together, interlocked, one would be normally open, the other woukld be normally closed.

:smart:

 

[spark 68]

Normally as Phil above says, you would use two N/O contactors mechanically interlocked for larger currents, often these have timers controlling the C/O times, especially if it is for automatic transfer switches

As Tony said what is the intended application ?

For smaller applications (circa 10A or so), to provide an always supply for controls etc. I have used Schneider/Merlin 3NO/2NC contactors wired as I suggested above.

 

[Engineer54]

If this Auto changeover system is being used as a power supply transfer switch, between two separate supplies (Eg, Utility Power and Generator Power) you will need a ''4 Pole change over switch, never use a 3 pole in such situations....

Can't and won't comment any further, until you give us some idea what this change over switch is being used for??