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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
    Brand: White Rodgers
    (24)
    $9.99 each
    1,465
    Mon, Oct 12
    1,465
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    1,465 Mon, Oct 12
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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
    Brand: Packard
    (3)
    $8.82 each
    908
    Mon, Oct 12
    908
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    908 Mon, Oct 12
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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
    Brand: Honeywell
    (15)
    $12.12 each
    1,070
    Mon, Oct 12
    1,070
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    1,070 Mon, Oct 12
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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
    Brand: Packard
    (3)
    $9.37 each
    1,025
    Mon, Oct 12
    1,025
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    1,025 Mon, Oct 12
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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
    Brand: White Rodgers
    (5)
    $18.99 each
    299
    Mon, Oct 12
    299
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    299 Mon, Oct 12
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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
    Brand: White Rodgers
    (17)
    $10.49 each
    247
    Mon, Oct 12
    247
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    247 Mon, Oct 12
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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
    Brand: Packard
    (5)
    $15.95 each
    340
    Mon, Oct 12
    340
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    340 Mon, Oct 12
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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
    Brand: Honeywell
    (3)
    $14.48 each
    507
    Mon, Oct 12
    507
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    507 Mon, Oct 12
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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
    Brand: Packard
    (6)
    $9.69 each
    298
    Mon, Oct 12
    298
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    298 Mon, Oct 12
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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
    Brand: Packard
    (2)
    $11.43 each
    687
    Mon, Oct 12
    687
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    687 Mon, Oct 12
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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
    Brand: Honeywell
    (2)
    $29.29 each
    372
    Mon, Oct 12
    372
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    372 Mon, Oct 12
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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
    Brand: Packard
    (3)
    $28.04 each
    203
    Mon, Oct 12
    203
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    203 Mon, Oct 12
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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
    Brand: Packard
    (3)
    $27.36 each
    66
    Mon, Oct 12
    66
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    66 Mon, Oct 12
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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
    Brand: Honeywell
    (8)
    $24.41 each
    187
    Mon, Oct 12
    187
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    187 Mon, Oct 12
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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
    Brand: Honeywell
    (1)
    $68.99 each
    395
    Mon, Oct 12
    395
    QtyArrives
    395 Mon, Oct 12
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  • Multi Mount 120/208-240V (Primary) 24V (Secondary) 50VA Transformer Product Image
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    Multi Mount 120/208-240V (Primary) 24V (Secondary) 50VA Transformer PM44450 Multi Mount 120/208-240V (Primary) 24V (Secondary) 50VA Transformer
    SKU: PM44450
    Brand: Packard
    (2)
    $22.27 each
    95
    Mon, Oct 12
    95
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    95 Mon, Oct 12
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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
    Brand: Honeywell
    (1)
    $132.59 each
    464
    Mon, Oct 12
    464
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    464 Mon, Oct 12
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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
    Brand: Hartland Controls
    $21.75 each
    101
    Mon, Oct 12
    101
    QtyArrives
    101 Mon, Oct 12
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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
    Brand: Hartland Controls
    $8.45 each
    326
    Mon, Oct 12
    326
    QtyArrives
    326 Mon, Oct 12
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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
    Brand: Functional Devices
    $22.25 each
    96
    Mon, Oct 12
    96
    QtyArrives
    96 Mon, Oct 12
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  • 120/208/240 VAC (Primary) 27.5V (Secondary)<br>75 VA Transformer Product Image
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    120/208/240 VAC (Primary) 27.5V (Secondary) 75 VA Transformer AT175F1023 120/208/240 VAC (Primary) 27.5V (Secondary) 75 VA Transformer
    SKU: AT175F1023
    Brand: Honeywell
    (5)
    $39.04 each
    174
    Mon, Oct 12
    174
    QtyArrives
    174 Mon, Oct 12
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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 AT72D1683 120 VAC (Primary) 26.5V (Secondary) 40 VA Transformer
    SKU: AT72D1683
    Brand: Honeywell
    (8)
    $22.98 each
    338
    Mon, Oct 12
    338
    QtyArrives
    338 Mon, Oct 12
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  • 120/208/240 VAC (Primary) 27.5V (Secondary)<br>75 VA Transformer Product Image
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    120/208/240 VAC (Primary) 27.5V (Secondary) 75 VA Transformer AT175A1008 120/208/240 VAC (Primary) 27.5V (Secondary) 75 VA Transformer
    SKU: AT175A1008
    Brand: Honeywell
    (9)
    $36.37 each
    281
    Mon, Oct 12
    281
    QtyArrives
    281 Mon, Oct 12
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  • Evaporative Cooler Transformer Relay<br>Control Panel Product Image
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    Evaporative Cooler Transformer Relay Control Panel 8A18Z-2 Evaporative Cooler Transformer Relay Control Panel
    SKU: 8A18Z-2
    Brand: White Rodgers
    (19)
    $105.59 each
    38
    Mon, Oct 12
    38
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    38 Mon, Oct 12
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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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