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Aaon R51290 200F Limit Switch ENC 3.00 OEM HVAC Replacement Part

Manufacturer

Picture for manufacturer Aaon

Part Number

R51290
6 reviews
Sale Price

$88.44

1 left at this price

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Usually delivered within 2 days

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Fitment guaranteed

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Product Details

The Aaon R51290 is a genuine OEM 200°F limit switch with a 3.00-inch enclosure (ENC 3.00), designed for use in Aaon commercial and industrial HVAC rooftop units and air handling systems. This temperature-activated safety switch monitors heat exchanger and supply air temperatures, automatically interrupting the control circuit when temperatures reach the 200°F trip point to protect the system from overheating damage.

Key Features:

  • 200°F Trip Temperature — Opens the control circuit at 200°F to prevent overheating
  • 3.00-Inch Enclosure (ENC 3.00) — Compact capillary tube length for precise placement in tight HVAC cabinet spaces
  • Genuine Aaon OEM Part — Direct factory replacement for Aaon rooftop units and air handlers
  • Safety Protection — Monitors supply air or heat exchanger temperatures to safeguard system components
  • Reliable Construction — Built for consistent performance under the temperature and humidity conditions found in commercial HVAC applications

The R51290 is a direct OEM replacement limit switch sourced from Aaon, a leading manufacturer of semi-custom HVAC equipment for commercial and industrial applications. Using a genuine OEM part ensures proper fit, calibration, and long-term system reliability.

The turbo (s475sx-e) has been my best purchase this year. The order was placed at the end of the workday and Thmotorsports shipped it the very next morning, also the box arrived in magnificent condition, the turbo was picture perfect without a blemish. Thmotorsports was the most affordable out of all ten sites that were considered, with top notch shipping. I have to say Thmotorsports was the best choice for my genuine part.

Arrived earlier than expected. Shipping was a little more but it was a small order so that happens.

Transaction was smooth, shipped quickly

I'm waiting on my refund. I was not happy that I couldn't talk to a real person regarding my return and my repurchase of the correct prop that I needed. So , if I get my total refund without a huge restocking fee(since the prop is new in original packaging and I bought another prop that is the correct size) then I will be extremely satisfied.

Ordered replacement seats for my fishing boat. I was shocked and impressed with the quality of the seats. They look as good as the originals from Tracker. Shipping was great, arrived sooner than I expected.

Seems good so far

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