Supco 90293 General Purpose Fan Relay, 1 A Load Current, 24 V Coil Voltage, Single Pole Double Throw Contacts
Score By Feature
OveReview Final Score
Product Description
Questions & Answers
They are, in fact I'll also mention that when the coil was energized with a 24VAC source, I had some buzzing issues at first. When I more solidly mounted the relay inside the metal box I was using, I was able to eliminate the buzzing. For about a year, it's been running on a daily basis - flawless.
Because I'm using another relay to drive it in my application, current isn't an issue. The coil only draws 5VA or less, according to the spec sheet. Because I'm using 24V, that's about 200 mA (5/24). The current would be lower if you used a higher voltage.
In theory, at least. However, I purchased one that was defective right out of the box. Spend a little more money and get this one, in my opinion. Basic Plug In Enclosed Power Relay, DPDT Contacts, 30A NO/3A NC Contact Rating, 24VAC Coil Voltagebr>I've installed two of these to control booster fans and they both work great.
There are a variety of load currents and coil voltages to choose from, ranging from 1A to 12A. By selecting a size, you can find the one you want.
Selected User Reviews For Supco 90293 General Purpose Fan Relay, 1 A Load Current, 24 V Coil Voltage, Single Pole Double Throw Contacts
These were purchased in pairs. One was to use the smaller relays as pilots to control the larger relays on my electric heat strips. The other was to replace a fan relay that had been in the air handler for a long time and controlled a 230 volt blower fan. A 1-year ago, the issues began. We've been at it for two months. The low voltage pilot relay would become stuck, resulting in the electric heat strips remaining engaged. It would let go if I gave it a slap on the outside of the air handler. Then, a few weeks later, I noticed the fan was running even though the thermostat was not set to do so. I also used a 90380 relay to pilot the compressor relay in the condenser unit outside, which worked flawlessly until I replaced them all with a more robust relay. The return spring, in my opinion, is simply not strong enough. Given their ratings, I'm not sure why the points would hold up when used with a low-powered device like a larger relay. It wasn't like it was anything special; it was just a three-pole contactor with a 24-volt coil. Until the other one got stuck in me, I assumed it was just defective.
e. is a two-word phrase that means throw. 2nd pair of pins 4 of them are normally shut; 2nd pair of pins Normally, 5 are accessible. (Pin No. 1) The coil contacts at 24 volts are number three. ) The coil can be powered by 24VAC or 24VDC. 24VDC was the voltage I used. If your 24VAC transformer produces "noisy" power, the relay's coil may buzz. Better "cleaner" AC transformers will result in less buzz. A power supply with a voltage of 24VDC is required. wall/supply - There will be no buzzing from Wart. With a Nest thermostat, I used this relay to control a millivolt gas fireplace valve: The millivolt gas valve was isolated from the 24V required by the Nest by the 24V supply, which powered both the Nest and the relay.
To power the Nest Thermostat, you'll need to add a "C" wire to your wire system. br>br>Although the Nest functioned without the "C" wire, it was unreliable, particularly when the Nest requested heat frequently. Because the Nest only draws power from the two wires when the furnace is not calling for heat, it would be erratic if the heater was turned on frequently and the Nest ran out of power. br>br>The problem was solved by this small relay. By connecting it to the furnace's 24VAC transformer and sharing one of the leads with the Nest's "C" connection, my Nest now has power at all times, even when the furnace is calling for heat. br>br>Throughout the winter, it has performed admirably. When it energizes, it makes a very minor "click," but this happens at the same time as the other furnace relays, so it's barely audible. br>br>The bottom line. If you need to connect a "C" wire to a two-wire circuit, This is a great wire heating system!.
The Nest Thermostat, which controls a gas fireplace, worked flawlessly with Relay. A 24VAC transformer had to be installed as well. The setup is very simple: br>br>1) The gas fireplace switch leads are connected across the N/O switch contact side of the relay. br>br>2) 18-gauge three wire The red, white, and blue gauge thermostat cable (connected to RH, W, and C on the Nest thermostat, respectively) was fished through the wall. The Nest was about eye-level with the fireplace and a few feet away from it. on the same plane as the wall The most difficult aspect of this installation was getting the wire through the wall. br>br>3) Under the fireplace, the wire is connected to the secondary 24VAC side of the transformer using the red RH power wire and the blue C common wire. br>br>4) The relay coil is connected to the white (W) control wire from the nest thermostat, with the other side connected to the blue C common wire; in my installation, the transformer and relay were tucked beneath the gas fireplace a couple of inches apart. In my case, it was 12 inches long and plugged into a 120 volt outlet. br>br>6) On my Nest Thermostat, I had to deceive it by setting it to "electrical heat" instead of "gas furnace. " I think. This is what I did, and it worked. It's worth reading somewhere. br>br>This is my fourth Nest Thermostat, but it's the only one that controls a gas fireplace; the other three are used to control two other furnaces, one of which has two zones, and they don't require a relay. br>br>On this product, shipping was extremely fast, and I have no complaints. I would purchase this item again. In fact, I'm about to use another one of these relays to control my entire-house automation system. humidifier for the house That'll be another project once I figure out how to get the extra wire run to the nest.
It's a relay, in case you didn't realize. It does exactly what it says. For use in HVAC systems, the coil is powered by 24VAC. It was easier to wire this to switch my 120v lines on the HUM transformer, so I used it to connect my humidifier to my Nest. br>br>I connected the white to an open neutral line on the HVAC control board and the black to the Normally Open terminal on the relay because there is a standard terminal hole in my HVAC that mounts the HUM transformer 24v lines outside with both 120v lines inside. The 120v line in the HVAC system is connected to the Relay Common. One side of the relay coil is connected to the HVAC 24v common, while the other is powered by the nest thermostat wire connected to *. br>br>Terminals for relays: br>1=24v Commonbr>2=HUM transformer 120v hot(black)br>3=Nest wire connected to
4=HVAC 120v hot(black)br>br>br>br>br>br>br>br>br>br>br>br>br>br>br>br>br>br>br>br>br>br There was no blade for terminal 6 in my package. Despite the fact that terminal 4 Internally, there are six ties. In addition, the schematic on mine appeared to be different, which perplexed me for a few moments.
The relay was only intermittently functional. The relay is broken. Obviously, it was a dud. The contacts were unable to close properly at 24 VAC. It only worked occasionally at best, so I didn't bother returning it. Maybe they'll send me one that actually works.
Fan relays were purchased in three different brands. Two of the three were terrible right out of the box. Of course, you won't be able to return electronics, so bid farewell to your money. After two months, this brand is still going strong. It cost me $300 in service fees to figure out that the new relays were the source of the problem with the other two. Be careful who you buy from.
Related Products For Supco 90293 General Purpose Fan Relay, 1 A Load Current, 24 V Coil Voltage, Single Pole Double Throw Contacts
