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  • 120/208/240V (Primary)<br>24V (Secondary), 40 VA Transformer, Foot-Mount Product Image
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    120/208/240V (Primary) 24V (Secondary), 40 VA Transformer, Foot-Mount 90-T40F3 120/208/240V (Primary) 24V (Secondary), 40 VA Transformer, Foot-Mount
    SKU: 90-T40F3 White Rodgers
    SKU: 90-T40F3
    Brand: White Rodgers
    (27)
    $10.28 each
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    1,505
    Thu, Oct 7
    1,505
    QtyArrives
    1,505 Thu, Oct 7
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  • Foot Mount 120/208/240V (Primary) 24V (Secondary) 40VA Transformer Product Image
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    Foot Mount 120/208/240V (Primary) 24V (Secondary) 40VA Transformer PF4031OEM Foot Mount 120/208/240V (Primary) 24V (Secondary) 40VA Transformer
    SKU: PF4031OEM Packard
    SKU: PF4031OEM
    Brand: Packard
    (3)
    $14.53 each
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    1,477
    Thu, Oct 7
    1,477
    QtyArrives
    1,477 Thu, Oct 7
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  • Foot Mount 120/208/240V (Primary) 24V (Secondary) 40VA Transformer Product Image
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    Foot Mount 120/208/240V (Primary) 24V (Secondary) 40VA Transformer PF42440 Foot Mount 120/208/240V (Primary) 24V (Secondary) 40VA Transformer
    SKU: PF42440 Packard
    SKU: PF42440
    Brand: Packard
    (6)
    $14.05 each
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    1,239
    Thu, Oct 7
    1,239
    QtyArrives
    1,239 Thu, Oct 7
    Questions? Call 1-888-757-4774
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  • 120 VAC (Primary)<br>27V (Secondary)<br>40 VA Transformer Product Image
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    120 VAC (Primary) 27V (Secondary) 40 VA Transformer AT140A1000 120 VAC (Primary) 27V (Secondary) 40 VA Transformer
    SKU: AT140A1000 Resideo
    SKU: AT140A1000
    Brand: Resideo
    (15)
    $11.49 each
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    893
    Thu, Oct 7
    893
    QtyArrives
    893 Thu, Oct 7
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  • Plate Mount Transformer (120 VAC To 24 VAC) Product Image
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    Plate Mount Transformer (120 VAC To 24 VAC) S84A-410 Plate Mount Transformer (120 VAC To 24 VAC)
    SKU: S84A-410 White Rodgers
    SKU: S84A-410
    Brand: White Rodgers
    (6)
    $19.10 each
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    335
    Thu, Oct 7
    335
    QtyArrives
    335 Thu, Oct 7
    Questions? Call 1-888-757-4774
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  • 120/208/240 VAC (Primary)<br>27V (Secondary)<br>40 VA Transformer Product Image
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    120/208/240 VAC (Primary) 27V (Secondary) 40 VA Transformer AT140A1018 120/208/240 VAC (Primary) 27V (Secondary) 40 VA Transformer
    SKU: AT140A1018 Resideo
    SKU: AT140A1018
    Brand: Resideo
    (4)
    $14.79 each
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    580
    Thu, Oct 7
    580
    QtyArrives
    580 Thu, Oct 7
    Questions? Call 1-888-757-4774
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  • Transformer, 40VA, 60 Hz 120V Primary, 24V (Secondary), Foot Mount Product Image
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    Transformer, 40VA, 60 Hz 120V Primary, 24V (Secondary), Foot Mount 90-T40F1 Transformer, 40VA, 60 Hz 120V Primary, 24V (Secondary), Foot Mount
    SKU: 90-T40F1 White Rodgers
    SKU: 90-T40F1
    Brand: White Rodgers
    (17)
    $12.47 each
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    605
    Thu, Oct 7
    605
    QtyArrives
    605 Thu, Oct 7
    Questions? Call 1-888-757-4774
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  • Class II Foot Mount 208/240V Input & 24V Output, 40VA Transformer Product Image
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    Class II Foot Mount 208/240V Input & 24V Output, 40VA Transformer PF40224 Class II Foot Mount 208/240V Input & 24V Output, 40VA Transformer
    SKU: PF40224 Packard
    SKU: PF40224
    Brand: Packard
    (6)
    $14.49 each
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    269
    Thu, Oct 7
    269
    QtyArrives
    269 Thu, Oct 7
    Questions? Call 1-888-757-4774
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  • Multi Mount 120/208/240/480V (Pri.) 24V (Sec.) 75VA Transformer Product Image
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    Multi Mount 120/208/240/480V (Pri.) 24V (Sec.) 75VA Transformer PM7541MCB Multi Mount 120/208/240/480V (Pri.) 24V (Sec.) 75VA Transformer
    SKU: PM7541MCB Packard
    SKU: PM7541MCB
    Brand: Packard
    (3)
    $39.91 each
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    408
    Thu, Oct 7
    408
    QtyArrives
    408 Thu, Oct 7
    Questions? Call 1-888-757-4774
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  • Multi Mount 120V (Primary) 24V (Secondary) 40VA Transformer Product Image
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    Multi Mount 120V (Primary) 24V (Secondary) 40VA Transformer PM12440 Multi Mount 120V (Primary) 24V (Secondary) 40VA Transformer
    SKU: PM12440 Packard
    SKU: PM12440
    Brand: Packard
    (6)
    $19.14 each
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    236
    Thu, Oct 7
    236
    QtyArrives
    236 Thu, Oct 7
    Questions? Call 1-888-757-4774
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  • 120V/208V/240V/480V (Primary) 24V (Secondary), 75VA Transformer, Foot Mount Product Image
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    120V/208V/240V/480V (Primary) 24V (Secondary), 75VA Transformer, Foot Mount TRAN-75VA 120V/208V/240V/480V (Primary) 24V (Secondary), 75VA Transformer, Foot Mount
    SKU: TRAN-75VA Hartland Controls
    SKU: TRAN-75VA
    Brand: Hartland Controls
    (1)
    $23.21 each
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    308
    Thu, Oct 7
    308
    QtyArrives
    308 Thu, Oct 7
    Questions? Call 1-888-757-4774
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  • 120V/208V/240V (Primary) 24V (Secondary), 40VA Transformer, Foot Mount Product Image
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    120V/208V/240V (Primary) 24V (Secondary), 40VA Transformer, Foot Mount TRAN-40VA 120V/208V/240V (Primary) 24V (Secondary), 40VA Transformer, Foot Mount
    SKU: TRAN-40VA Hartland Controls
    SKU: TRAN-40VA
    Brand: Hartland Controls
    (1)
    $9.19 each
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    258
    Thu, Oct 7
    258
    QtyArrives
    258 Thu, Oct 7
    Questions? Call 1-888-757-4774
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  • Plate or Panel Mounted 120/208/240 Vac Transformer w/ 9" Lead Wires & Metal End Bells Product Image
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    Plate or Panel Mounted 120/208/240 Vac Transformer w/ 9" Lead Wires & Metal End Bells AT150F1022 Plate or Panel Mounted 120/208/240 Vac Transformer w/ 9" Lead Wires & Metal End Bells
    SKU: AT150F1022 Resideo
    SKU: AT150F1022
    Brand: Resideo
    (2)
    $26.69 each
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    402
    Thu, Oct 7
    402
    QtyArrives
    402 Thu, Oct 7
    Questions? Call 1-888-757-4774
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  • 120 VAC (Primary)<br>26.5V (Secondary)<br>40 VA Transformer Product Image
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    120 VAC (Primary) 26.5V (Secondary) 40 VA Transformer AT72D1006 120 VAC (Primary) 26.5V (Secondary) 40 VA Transformer
    SKU: AT72D1006 Resideo
    SKU: AT72D1006
    Brand: Resideo
    (9)
    $22.99 each
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    204
    Thu, Oct 7
    204
    QtyArrives
    204 Thu, Oct 7
    Questions? Call 1-888-757-4774
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  • Transformer, Single Hub, Foot Mount, 75VA, 120 to 24 Vac Product Image
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    Transformer, Single Hub, Foot Mount, 75VA, 120 to 24 Vac TR75VA001 Transformer, Single Hub, Foot Mount, 75VA, 120 to 24 Vac
    SKU: TR75VA001 Functional Devices
    SKU: TR75VA001
    Brand: Functional Devices
    $22.25 each
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    198
    Thu, Oct 7
    198
    QtyArrives
    198 Thu, Oct 7
    Questions? Call 1-888-757-4774
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  • Foot Mount 120/208/240/480V 75VA Transformer Product Image
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    Foot Mount 120/208/240/480V 75VA Transformer PF52475 Foot Mount 120/208/240/480V 75VA Transformer
    SKU: PF52475 Packard
    SKU: PF52475
    Brand: Packard
    (3)
    $37.34 each
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    192
    Thu, Oct 7
    192
    QtyArrives
    192 Thu, Oct 7
    Questions? Call 1-888-757-4774
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  • Gas Ignition Transformer<br>(120 VAC, 60 Hz) Product Image
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    Gas Ignition Transformer (120 VAC, 60 Hz) ET401A1 Gas Ignition Transformer (120 VAC, 60 Hz)
    SKU: ET401A1 Honeywell
    SKU: ET401A1
    Brand: Honeywell
    (2)
    $68.99 each
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    108
    Thu, Oct 7
    108
    QtyArrives
    108 Thu, Oct 7
    Questions? Call 1-888-757-4774
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  • 120 (Primary) 24V (Secondary) 40VA Rating Multi-Mount Transformer, Class 2 1585 UL Recognized Product Image
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    120 (Primary) 24V (Secondary) 40VA Rating Multi-Mount Transformer, Class 2 1585 UL Recognized T3401 120 (Primary) 24V (Secondary) 40VA Rating Multi-Mount Transformer, Class 2 1585 UL Recognized
    SKU: T3401 DiversiTech
    SKU: T3401
    Brand: DiversiTech
    $12.29 each
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    Thu, Oct 21 – Thu, Oct 28
    Arrives
    Thu, Oct 21 – Thu, Oct 28
    Questions? Call 1-888-757-4774 or
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  • Foot Mount 120/208/240V (Primary) 24V (Secondary) 20VA Transformer Product Image
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    Foot Mount 120/208/240V (Primary) 24V (Secondary) 20VA Transformer PF42420 Foot Mount 120/208/240V (Primary) 24V (Secondary) 20VA Transformer
    SKU: PF42420 Packard
    SKU: PF42420
    Brand: Packard
    (3)
    $13.71 each
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    418
    Thu, Oct 7
    418
    QtyArrives
    418 Thu, Oct 7
    Questions? Call 1-888-757-4774
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  • Transformer, Dual Hub, Foot Mount, 50VA, 480/277/240/120-24 Vac Product Image
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    Transformer, Dual Hub, Foot Mount, 50VA, 480/277/240/120-24 Vac TR50VA004 Transformer, Dual Hub, Foot Mount, 50VA, 480/277/240/120-24 Vac
    SKU: TR50VA004 Functional Devices
    SKU: TR50VA004
    Brand: Functional Devices
    $20.95 each
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    144
    Thu, Oct 7
    144
    QtyArrives
    144 Thu, Oct 7
    Questions? Call 1-888-757-4774
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  • 120/208/240V (Primary) 24V (Secondary) 40VA Rating Transformer, Class 2 1585 UL Rated Product Image
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    120/208/240V (Primary) 24V (Secondary) 40VA Rating Transformer, Class 2 1585 UL Rated T1404 120/208/240V (Primary) 24V (Secondary) 40VA Rating Transformer, Class 2 1585 UL Rated
    SKU: T1404 DiversiTech
    SKU: T1404
    Brand: DiversiTech
    $9.49 each
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    Thu, Oct 21 – Thu, Oct 28
    Arrives
    Thu, Oct 21 – Thu, Oct 28
    Questions? Call 1-888-757-4774 or
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  • Gas Ignition Transformer (120 VAC, 50/60 Hz) Product Image
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    Gas Ignition Transformer (120 VAC, 50/60 Hz) Q624A1014 Gas Ignition Transformer (120 VAC, 50/60 Hz)
    SKU: Q624A1014 Honeywell
    SKU: Q624A1014
    Brand: Honeywell
    (2)
    $133.99 each
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    321
    Thu, Oct 7
    321
    QtyArrives
    321 Thu, Oct 7
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  • Universal Mount Transformer Product Image
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    Universal Mount Transformer AT140A1042 Universal Mount Transformer
    SKU: AT140A1042 Honeywell Home
    SKU: AT140A1042
    Brand: Honeywell Home
    (9)
    $25.19 each
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    95
    Thu, Oct 7
    95
    QtyArrives
    95 Thu, Oct 7
    Questions? Call 1-888-757-4774
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  • Class ll Plate Mounted 120V (Input) 24V (Output) 40VA Transformer Product Image
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    Class ll Plate Mounted 120V (Input) 24V (Output) 40VA Transformer PM12040 Class ll Plate Mounted 120V (Input) 24V (Output) 40VA Transformer
    SKU: PM12040 Packard
    SKU: PM12040
    Brand: Packard
    (2)
    $18.12 each
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    56
    Thu, Oct 7
    56
    QtyArrives
    56 Thu, Oct 7
    Questions? Call 1-888-757-4774
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FAQs, Manuals & Videos

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  • Transformers provide power to electric circuits in heating, cooling and HVAC systems. They can be used in any application that does not exceed the transformer's load ratings. Common applications include thermostats, gas valves, and relays. When selecting the appropriate transformer, primary voltage is the most important consideration. Transformers are available in primary voltages ranging from 24V to 480V. Honeywell and White Rodgers transformers are the industry standard.
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