Re: Air conditioner contactor snubber.

GEORGE S JAYNES wrote: 
My contactor has just killed two thermostats in a row.  Yes, i will get a
new contactor.  Anybody know what values to use on this 24vac coil?


I don't think most thermostats are capable of driving a motor contactor, directly. You need a small relay between them. 24 volt AC coil and something like 5 or 10 amp contacts. Something with a less than 1 watt coil. This might work:
KUP-11A15-24 at the bottom of
http://dkc3.digikey.com/PDF/T052/1290.pdf
This can be socketed, or connected with separate wires with push on crimp terminals.

Then get a contactor with a generous contact rating, compared to the current your compressor takes. It can have a 120 or 240 VAC coil.

A 47 ohm in series with .47 uF across the thermostat contact will reduce the turn off flash.
.

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