Relay switch

T

TJ Smith

Joined
Sep 17, 1999
Messages
863
I need a 7 amp 240 volt relay switch to power up a heat treat furnace. Any ideas where I can find one.
Thanks in advance
TJ
 
You might want to try:

www.digikey.com

They have alot of discreet electronic components. They might be able to help. I have ordered things from them in the past and they have been extremly helpful.
 
Surplus Center had 20 amp SSRs in stock at one time for about $20...you might check their current catalog...

:)

-Darren
 
How come you can't? I've not seen a place where an SSR cannot replace a solenoid/magnetic mechanical relay. You are using a controller?
 
Hello TJ

What would you be using to control the relay coil? Would you be using the 240Vac, 120Vac or some lower DC voltage, controlled by a smaller switch. If you have only 7 A of current, you can probably use some kind of switch to directly control it.

Phil
 
If I knew the control voltage I could tell you exactly where to get one... But without it try just using a contactor from an AC repair place... you can get them in 12 or 24 volts and even a few in the 5-7 volt range, most built to control a 240V circuit...

If your control voltage is 24VDC send me an email and i will send you a contactor that will work,i have a box of um.

Alan Folts

alanfolts@hotmail.com
 
TJ Smith said:
I need a 7 amp 240 volt relay switch to power up a heat treat furnace. Any ideas where I can find one.
Thanks in advance
TJ
Click to expand...

TJ
Since you live in Naches you will probably have to mail order a realy unless you want to Drive into Yakima. Solid state relays (SSR) are usually better(no arching and sparking!) if you have someone who can guide you through putting it in a circuit that it wasn't meant to be in. The trigger voltage on most SSRs is usually in the neighborhood of 6 to 30 volts DC. This can vary greatly from make to make. The output ratings are in AC volts and amps. If you don't want to spend a lot of time looking for one you can call Graingers in your area or go on line and look at their website. They are usually a little stiff on their prices. A SSR rated at 240VAC @ 10 amps will run about $18.00

Most of the new SSR will handle inductive loads (I.e. motors) the old ones didn't like inductive loads.

If you don't want SSR Grainger carries a variety of other relays. You still need to know the activation voltage and whether it is AC or DC. You might try going by some place that repairs furnaces and see if they have a junker you can scrounge a relay off of.

If you need help on installing the relay shoot me an email and I'll walk you thru it. I do this at work frequently.

If you don't know Kelly Cupples (YAKIMA) you should look him up. He sells steel and runs a machine shop and oh yea, he makes knives.

Jim A.
 
Thanks guys I will be sending email and will post the results when I get this thing together. I am making a heat treat oven and want to use a digital control whick is an Auber SYL 2342.
Thanks again for all the replys
Take Care
TJ
I do know Kelly, forged a couple of knifes with him a copuple weeks ago.
 
TJ

If you run into trouble give me a call & I'll walk you through it. If you are interested in making your own thermocouples (TCs) let me know. I also have plenty of type K TC wire if you can't find someplace to get a small quantity.

Jim Arbuckle 757-867-9578
 
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