Skip to Navigation Skip to Content

ribbon image Stock Up on Real OEM HVAC Parts for the Summer Season!  SHOP NOW

Important Update: Click here for the latest information on tariffs and their impact on our industry.

Rational 42.00.279P Controller, Fan Motor, 400-480VAC, 50/60HZ

Drag to spin
Log in to enable Quick Order
Manufacturer:
Rational
Manufacturer #:
42.00.279P
Parts Town #:
RATL42.00.279P
Units:
Each
Fits Models:
View Models List

Rational 42.00.279P Genuine OEM Replacement Part

A Rational 42.00.279P Controller regulates motor response so the system maintains steady airflow and consistent performance.

  • Real OEM controls align exactly with original mounting points and connections for a precise fit that installs cleanly and runs as intended
  • Product Type: Fan Motor Controller
  • Voltage: 400-480VAC
  • Frequency: 50/60HZ

Common Questions and Answers

What is the importance of the Rational 42.00.279P Controller in system operation?

The controller regulates fan motor performance within the equipment by managing power delivery across the specified 400-480VAC, 50/60HZ range. Its design matters because it is built to match the electrical requirements of the system, supporting reliable airflow control and protecting operation under demanding conditions.

What signs might suggest the Rational 42.00.279P Controller should be replaced?

The controller may need to be replaced if the equipment shows erratic fan operation, failure to maintain proper airflow or intermittent motor response during use. Physical signs can include visible scorching, damaged connectors or corrosion and environmental signs may include exposure-related wear from heat, moisture or electrical stress that could affect performance.

Read More FAQs

How fast will my Rational 42.00.279P Controller ship?

Parts Town offers same-day shipping on in-stock real OEM parts Monday—Friday until 9 PM ET and on Saturday until 4 PM ET for online air orders. All orders submitted afterward will be handled the next business day.

Will I be able to track my Rational 42.00.279P Controller once it ships?

Yes! View updates on your real OEM parts after shipping by visiting our Track My Order page and putting in your order number or purchase order (PO) number and zip code. You'll then be able to check shipping details whenever you want, giving you peace of mind as shipping progresses.

Does Parts Town provide customer assistance for the Rational 42.00.279P Controller?

Of course! Customer assistance for your real OEM parts is available 8 AM to 9 PM ET Monday—Friday with chat, email and phone among the options. Go to our Contact Us page and learn all the ways you can reach out to us about any issues with your purchase.

What's the return window for the Rational 42.00.279P Controller?

We allow you to return most new, unopened real OEM replacement parts within 90 days of delivery, so head to our Returns page to see if your order qualifies. If your order was fulfilled by a third-party seller, the return must be handled directly with them.

  • Length:
    16 in / 40.64 cm
  • Width:
    15 in / 38.10 cm
  • Height:
    12 in / 30.48 cm
  • Weight:
    4.5 lbs / 2041 g