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About this product
Product Identifiers
BrandWhite-Rodgers
MPN90T40F3
GTIN0786710548321
UPC0786710548321
eBay Product ID (ePID)1559609639
Product Key Features
Power Rating40 VA
Secondary Voltage Rating (DC)24 V
Number of Outlets1
Termination StyleWire Lead
ColorWhite
Conversion FunctionStep-down
Primary Voltage Rating (DC)24 V
Secondary Current Rating40 A
Minimum Operating Frequency60 Hz
Primary Current Rating40 A
Turns Ratio1:20
Secondary Voltage Rating (AC)24 V
Mounting StylePanel Mount
Number of Phases1
Primary Voltage Rating (AC)120/208 V
TypeClass 2 Transformer
Maximum Operating Frequency60 Hz
Dimensions
Item Height2.75 in
Weight1.55
Depth2.700
Width2.700
Length4.000
Ratings and reviews
Most relevant reviews
- 23 May, 2018Most favourable review
Perfect match and fit
My 4 zone HVAC system needed some 70VA to operate the control board, 5 dampers and 4 thermostats. The old control board and equipment could operated on the 40VA transformer that came with the furnace but the new board took more current. The WR Transformer was a perfect match for parallel installation to provide the extra current needed for the system. I drilled two holes, mounted it and wired it in. Power applied and it worked perfectly as did the entire system. WR makes a good product and this transformer not only worked with 120VAC, but with other voltages as well.Verified purchase: YesCondition: New
- 26 Mar, 2016Most critical review
"Universal application but one in a million"
installed it a@ 120vac, connected VOM to output and reading was 35v and not 24v and it was too warm with the malfunction odor. the price was ok so i tossed it rather than the hassle of return and wait etc. i probably got the only questionable one from the entire production line of a million of these. it happens.Verified purchase: YesCondition: New
- 07 Oct, 2017
Gets ridiculously hot, but works great.
The 120/24VAC "plugin" transformer that came with the irrigation control unit kept overheating and tripping the breaker in my breaker box. So I replaced that transformer with this on and put this in my breaker box and ran the 24VAC power to my outdoor irrigation control box. I live in NM and it can get to over 130F inside the breaker box and rhis transformer has run all summer 2017 without issue.Verified purchase: YesCondition: New
- 25 Apr, 2018
This is a Class 2 "double-insulated" excellent transformer.
Class 2 refers to a transformer that delivers 100VA or less with a maximum output voltage of 30VAC or less. Class 2 transformers are limited, either by inherent winding impedance or external fusing, to power levels considered safe enough to receive special consideration in safety requirement compliance. It is safe to use equipment even if a protective ground is not present.Verified purchase: YesCondition: New
- 28 Sep, 2017
24VAC control transformer
This product met my requirements in form, fit and function. Could have been a little more competitively priced. Delivered on date promised.Verified purchase: YesCondition: New
- 19 Jun, 2018
Wow
This is the finest White Rogers transformer that I have ever bought. It is supreme in every aspect that you would expect in a transformer. Indeed this is the epitome of 120/24v transformers. I am sure that I will keep it for all time.Verified purchase: YesCondition: New
- 08 Nov, 2015
Perfect replacement transformer
I needed to replace a failing transformer in my air handler and the specs on this unit fit the bill. Pay attention to wire colors vis-a-vis voltage inputs, and you'll be up and running in no time.Verified purchase: YesCondition: New
- 14 Sep, 2016
Transformer review
Well made, heavy duty, worked perfectly in my project which detects if the tailgate of our suv is open, if it is it turns off the door opener so it won't mangle the tailgate like it did a month ago. From in HendersonvilleVerified purchase: YesCondition: New
- 12 May, 2021
Transformer
Worked really well, perfect fitVerified purchase: YesCondition: New
- 23 May, 2019
transformer for 24vac
good product. works fine. well made.Verified purchase: YesCondition: New
