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KB Electronics 8811006 Solid State Variable Speed AC Electric Motor Control, 2.5 Max amp, 115V, # K177-1002

4.3 out of 5 stars 56 customer reviews
| 11 answered questions

List Price: $32.00
Price: $18.11 ($18.11 / Control) & FREE Shipping on orders over $35. Details
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Specifications for this item
Brand Name KB Electronics
Part Number 8811006
UPC 663001020516
Specification Met CSA/UL
EAN 0663001020516
Number of Items 1
UNSPSC Code 25174001

Control provides infinite variable speed for shaded pole and PSC motors. Max amps means that the ... See more product details



Product Features

  • Designed for Standard 2" x 4" Electrical Wall Box
  • 2.5 Max amps 115 Volts; UL & CSA Approved
  • Not to be used with Capacitor Start or Capacitor Run Motors
  • Applications: Fans, Blowers, Fireplace Blowers, Attic Fans, Humidifiers, Ventilators

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Product Details

  • Shipping Weight: 4.8 ounces (View shipping rates and policies)
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item can be shipped to select countries outside of the U.S. Learn More
  • ASIN: B000F9B712
  • Item model number: 8811006
  • Average Customer Review: 4.3 out of 5 stars  See all reviews (56 customer reviews)
  • Amazon Best Sellers Rank: #2,117 in Industrial & Scientific (See Top 100 in Industrial & Scientific)
  • Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

Frequently Bought Together

  • KB Electronics 8811006 Solid State Variable Speed AC Electric Motor Control, 2.5 Max amp, 115V, # K177-1002
  • +
  • Thermal Switch Can be used with Fireplace Blowers for automatic blower operation # 19-SF2-115
  • +
  • Dayton 1TDR3 PSC Blower, 115 Volt
Total price: $124.49
Buy the selected items together

Product Description

Control provides infinite variable speed for shaded pole and PSC motors. Max amps means that the rated motor name plate amperage can not exceed this rating or you will damage the control and motor. Motor must be run with sufficient torque to prevent stalling - A motor not turning will burn up Motor must have fan blade installed on shaft (direct drive) to cool motor. Not to be used with gear motors. Controls that have been installed are not returnable.

Customer Reviews

Top Customer Reviews

Verified Purchase
The control has a small adjustment screw on the side that you are supposed to tweak when you install. The screw allows you to set the lowest speed (which should not be so slow that the motor stalls). You can set a slow speed easily enough, but two problems crop up after installation:

1. The taper isn't smooth, meaning that (in may case, with a fireplace fan) there really isn't a "medium" speed. In other words, as you turn the control towards "low" the speed of the fan stays pretty much the same until you reach a certain point at which the speed drops to the previously mentioned lowest setting. Same deal in reverse, i.e., as you turn the dial toward "high," the fan runs slow until it jumps to full speed.

2. If you set the control low enough to be, well...low, then any additional draw put on the same circuit stalls the motor. In my case I turned on a light, so we aren't talking major draw. I tried changing the adjustment (putting more load on the circuit and then setting the "low" adjustment a bit higher), but I couldn't find a happy medium. If I set the adjustment high enough to not be bothered by a minor additional stress on the circuit, the "low" setting was almost the same as the "high" setting.

So, with these limitations, this speed control is effectively an on/off switch, something I could have purchased locally for less than a buck.
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Verified Purchase
This device uses a triac type scr to control the speed of specific types of motors. Manufacturer's spec sheet lists shaded pole, permanent split capacitor, and universal (AC-DC) motors. This covers most small air moving systems. Since it's rated 2.5A maximum you'll want to also check that your motor's maximum current requirement falls below 2.5A @125VAC. I'm using it on a very low wattage universal motor drawing about 0.12A and it works perfectly. I didn't even need to adjust the trim pot for the low speed setting.

Knowing the type of motor and its current requirements is important if you want good speed control over the full range of settings. For instance, the small motor I mentioned above will NOT operated properly on the larger 15A maximum speed controls listed. With those controls the motor only runs when the control is getting near its maximum setting.

Here's the manufacturer's data sheet for those wanting more detail: [...]
If Amazon won't let me post the web address, just go to kbelectronics - it's a dot com site.
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Verified Purchase
I bought this to slow down a ceiling fan and it worked perfectly. I wanted to run a 50 cfm ceiling fan in my basement all of the time to keep pet smells from entering the rest of the house but did not want 50 cfm of conditioned air being exhausted constantly. I also wanted the fan to make less noise. This switch worked perfectly, I did not even have to adjust the set screw. The fan speed seemed to vary with the switch position perfectly. I read a few unfavorable reviews and I can only speculate, but it might be that they did not purchase the correct amp rating for their motor. In my case, I bought the 2.5 amp model for my motor rated at 1.6 amps.
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Verified Purchase
I have Hunter air cleaners to control dust from my parrots, and the motor speeds were much too fast even on low setting, and blew more dust than they collected. I purchased these units to slow down the motor speed, and was able to mount them inside the cases for a clean mount, with the wall plate and dial on the outside. These work perfectly for my application to lower the fan speed of my air cleaners, resulting in less noise and a lower CFM rate, while still filtering the air satisfactorily.
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Verified Purchase
Works as described. This was purchased to permit speed variations for a fireplace insert fan as the one we had before was not designed for that and was hard to use and difficult to have a nice range of speeds over the turn of the knob. I have installed similar devices so this was easy for me and really should be for anyone. The task of getting new outlets and running wires, etc. was a bit of a task as I needed to wire this in line to a new outlet for the fireplace fan to plug into - but that has nothing to do with the item itself. It has a nice range of gradual speeds for the fireplace insert fan and a nice "click" for the off position. Nothing really to complain about yet.
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Verified Purchase
These are rated 2.5 amp up to 25C/72F.... Mine worked fine for a week then melted, when I called KB customer support they told me of the low temperature rating and told me I would need a 5 amp model because the 2.5 amp one is only rated 2.5 amps up to 25C/72F.... Ugh, we keep the house 75 degrees in the winter it overheated.... By the way our fan motor is 1.5 Full Load Amps.
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Verified Purchase
The A/C unit in my condo blew air far too strongly, even on the lowest of the 3 fan speeds. It blew freezing air over people anytime the A/C was running and was quite uncomfortable. So I wired this in series with the low fan speed setting, and now I have perfect control over the fan and can get it as low as I want, and the A/C is much more comfortable. It is also much quieter. Problem solved!

My fan motor is a 2.0 amp, 1/8 HP, single phase 120 VAC. This control, good for up to 2.5 amps, works perfectly with my motor. Be sure to check your motor's rating and order the speed control with the correct amperage for it.
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