Looking for120vac thermostat and relay

Swimming pool supply store. My pump controller turns on the pump when temperatures approach freezing. ...Jim Thompson

Thanks, I'll look into those. Mikek

I looked, they will do the job in one fell swoop, but cost is to high. Thanks, Mikek

The more durable (typically) sort of water-sensing thermostats (aquastats), since you specify "must be able to be waterproofed" have a capillary and sensing bulb to stick in the water and the rest of it is located in a dry location. The dry location can be something like a NEMA exterior rated box if it's more "putting it out in the weather" rather than "putting it underwater" situation. Attempting to directly waterproof a thermostat rather than using a rated enclosure would make your frequent failures non-surprising.

The surplus place I had gotten some nice heavy-duty relays from is now out of them, too bad. That's surplus. Try to find one rated for MORE than 1HP at 120 (or rewire the motor application to 240, where it will be easier to find a relay rated for more than 1HP at 240V) for longer relay life.

Roll your own. With one of those National Temp Sensor chips, and drive a relay.

And value your own time. I'm finding it's often more economical to buy than spend a lot of time fabricating your own gimmick. ...Jim Thompson

In Arizona ?

Jamie

Yes, it's desert, which can get _amazingly_ cold at night. I'm in So. Cal, and a couple of winters ago I actually saw ice on the sidewalk one morning. Luckily, being a Minnesot'n, I know how to walk over ice; I saw some passerby almost fall on his butt, and I almost felt guilty for finding that so amusing. ;-)

Cheers! Rich

Google Klixon.

Cheers! Rich

Google Klixon.

Cheers! Rich

Hi Rich, I have searched Klixon, so far nothing has been right. It would be a great find if a Klixon temperature switch would handle the motor current. Regarding your previous post about amusement of others slipping on ice, my wife is foreign born, years ago I ask her about a small scar on one of her legs, she said when she was a kid she slipped on a banana peel! I started laughing, she didn't see the humor, the humor of slipping on a banana peel is cultural. Mikek

Check with Granger.

tm

I once read an item by Charlie Chaplin, saying something to the effect that a person slipping on a banana peel is merely slapstick. What's funny is when the victim sees the banana peel and carefully steps over it into an open manhole. ;-)

Speaking of humor, some years ago I was astonished to see an old movie from my parent's generation that was absolutely gut-splittingly hilarious, but dressed like a serious movie, not the Stooges or Laurel & Hardy. "What? Old people like comedy?" (I think the title was something like "A Certain Kind of Feeling," but couldn't find it on imdb.) My favorite line from it was when some guy walked up to a dame in some bar, and says, "Excuse me..." She said, "What'd you do?" He was kind of taken aback, and said, "I beg your pardon?" and the dame said, "You just said that."

Just this morning, I had the TeeVee on the local indie (KTLA 5.3 or so), just for the audio wallpaper while I was perusing the morning comix. I wasn't paying much attention; the movie was "The Invisible Woman." (like, what's the point of a naked lady that you can't even see?) What caught my attention was some guy saying, "He's got the personality of a temporary filling." I almost FOOMC. I started watching the movie, and my biggest surprise was seeing Shemp Howard playing something other than one of the Stooges! (but still funny.)

I Love Humor - even Reader's (Readers'?) Digest calls laughter the best medicine. :-) (and as long as people are laughing at me, they're not beating the crap out of me. =:-O )

Just for completeness, I searched Digi-Key and Newark, and didn't find Klixon, but I did find "Microtherm" - you might try them. I also spotted a couple of other names, but that's as much of your homework I'm willing to do for free. ;-D

Almost every microwave oven has at least one klixon-type switch - my borrowed electric space heater has a klixon-type switch - SOMEbody's making them!

Would 10 or 15 amps switch a 1 HP motor? (That's what you said you need, right?)

Good Luck! Rich

Free? I never said free, I offered my undying gratitude!

I think so, I haven't looked at the spec's, it's a bigbox shallow well pump. Mikek

Have you looked into Pond stuff? Can imagine they'd have something to keep ponds from freezing.

Cheers

Once again, Rich is out of touch with reality. Klixon hasn't existed for years. It was a division of Texas Instruments. It was sold off to Sensata:

When I needed a fail-safe thermostat to keep my greenhouse frost-free, I used a refrigerator thermostat to operate a relay which switched on a fan heater. The adjustable control could be mounted in a waterproof container if necessary, with the copper sensing tube outside. If the thermostat fails it will usually go open-circuit, cutting off power to the relay, whose normally-closed contacts then switch on the heating.

FWIW, this system has been operating for nearly 12 years without problem.

That's basically what I'm doing. I'm using this thermostat,

That is a thermostatically controlled 15 amp outlet. Turns on at ~35 degrees F, and off at ~45 degrees. $12.95

Ed

That is very close, The differential is to much. I may but one just to see if I could modify it. Thanks, Mikek

I thought spares were cheaper in the US than here in the UK! See here (£1.00 ~ $1.63):

May be worth the shipping cost...