Transformers

This section contains several different types of transformers. The 24V control circuit step-down transformers are designed to power any 24V control system, including thermostats, gas valves and relays. Honeywell and White Rodgers Transfomers are made for heating systems. These Transformers are the industry standard.

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  • Foot Mounted, Plate Mounted, or Clamp Mounted 120 Vac Transformer w/ 9 in. Lead Wires (40VA) View Specs

    120 VAC (Primary)
    26.5V (Secondary)
    40 VA Transformer

    • SKU: AT72D1683
    • Brand: Honeywell
    In Stock!
    185 Avail (Ships in 24-48 Hrs)

    $17.59 / each

    $67.80 / box
    4 x $16.95

     
  • Foot Mounted, Plate Mounted, Clamp mounted or Panel Mounted 120 Vac Transformer (40VA) View Specs

    120 VAC (Primary)
    27V (Secondary)
    40 VA Transformer

    • SKU: AT140A1000
    • Brand: Honeywell
    In Stock!
    344 Avail (Ships in 24-48 Hrs)

    $9.95 / each

    $37.80 / box
    4 x $9.45

     
  • Foot Mounted 120/208/240 Vac Transformer w/ 9 in. Lead Wires (40VA) View Specs

    120/208/240 VAC (Primary)
    27V (Secondary)
    40 VA Transformer

    • SKU: AT140A1018
    • Brand: Honeywell
    In Stock!
    82 Avail (Ships in 24-48 Hrs)

    $11.65 / each

    $43.96 / box
    4 x $10.99

     
  • Foot Mounted, Plate Mounted, Clamp mounted or Panel Mounted 120/208/240 Vac Transformer w/ 9 in. Lead Wires (50VA) View Specs

    120/208/240 VAC (Primary) 27.5V (Secondary)
    50 VA Transformer

    • SKU: AT150A1007
    • Brand: Honeywell
    In Stock!
    96 Avail (Ships in 24-48 Hrs)

    $13.45 / each

    $51.00 / box
    4 x $12.75

     
  • Foot Mounted 120/208/240 Vac Transformer w/ 9 in. Lead Wires w/ Plastic End Caps View Specs

    120/208/240 VAC (Primary) 27.5V (Secondary)
    50 VA Transformer

    • SKU: AT150B1237
    • Brand: Honeywell
    In Stock!
    7 Avail (Ships in 24-48 Hrs)

    $14.89 / each

     
  • 120 VAC 50/60 Hz Gas ignition Transformer View Specs

    Gas Ignition Transformer (120 VAC, 50/60 Hz)

    • SKU: Q624A1014
    • Brand: Honeywell
    In Stock!
    87 Avail (Ships in 24-48 Hrs)

    $112.95 / each

     
  • Foot mounted 120/208/240 Vac Transformer w/ 9 in. Lead Wires (75VA) View Specs

    120/208/240 VAC (Primary) 27.5V (Secondary)
    75 VA Transformer

    • SKU: AT175A1008
    • Brand: Honeywell
    In Stock!
    77 Avail (Ships in 24-48 Hrs)

    $27.95 / each

     
  • Universal Mount Transformer View Specs

    Universal Mount Transformer

    • SKU: AT140A1042
    • Brand: Honeywell
    In Stock!
    12 Avail (Ships in 24-48 Hrs)

    $19.85 / each

     
  • Foot mounted 120 Vac Transformer with 9 in. leadwires and plastic end caps View Specs

    120 VAC (Primary)
    27.5V (Secondary)
    50 VA Transformer

    • SKU: AT140B1206
    • Brand: Honeywell
    In Stock!
    11 Avail (Ships in 24-48 Hrs)

    $8.95 / each

     
  • Solenoid w/ Continuous Duty 16 Ohms Coil Resistance (12 VDC Isolated Coil) View Specs

    Type 120 Solenoid
    12 VDC Coil, SPNO

    • SKU: 120-105711
    • Brand: White Rodgers
    In Stock!
    8 Avail (Ships in 24-48 Hrs)

    $18.45 / each

     
  • Foot mounted 120/208/240 Vac Transformer with 9 in. lead wires and plastic end caps View Specs

    120/208/240 VAC (Primary) 27V (Secondary)
    40 VA Transformer

    • SKU: AT140B1214
    • Brand: Honeywell
    In Stock!
    9 Avail (Ships in 24-48 Hrs)

    $8.69 / each

    $31.80 / box
    4 x $7.95

     
  • Solenoid w/ Normally Open Continuous Contact Rating 100 Amps (12 VDC Grounded Coil) View Specs

    Type 120 Solenoid, 12 VDC Coil, SPNO,Normally Open Continuous Contact

    • SKU: 120-105851
    • Brand: White Rodgers
    In Stock!
    2 Avail (Ships in 24-48 Hrs)

    $17.95 / each

     
  • 24 V Electric Heater Relay with SPST switching View Specs

    24V Electric Heater Relay w/ SPST Switch

    • SKU: R841E1068
    • Brand: Honeywell
    In Stock!
    16 Avail (Ships in 24-48 Hrs)

    $102.95 / each

     
  • Foot mounted 277 Vac Transformer with 9 in. leadwires and plastic end caps View Specs

    120 VAC (Primary)
    27V (Secondary)
    40 VA Transformer

    • SKU: AT150B1252
    • Brand: Honeywell
    In Stock!
    11 Avail (Ships in 24-48 Hrs)

    $17.09 / each

     
  • Solenoid w/ Intermittent Duty, Normally Open Continuous Contact Rating 80 Amps (12 VDC Isolated Coil) View Specs

    Type 120 Solenoid, 12 VDC Coil, SPNO,Normally Open Continuous Contact

    • SKU: 120-106131
    • Brand: White Rodgers
    In Stock!
    1 Avail (Ships in 24-48 Hrs)

    $13.95 / each

     
  • Solenoid w/ Intermittent Duty, Normally Open Continuous Contact Rating 80 Amps (12 VDC Isolated Coil) View Specs

    Type 120 Solenoid, 12 VDC Coil, SPNO,Normally Open Continuous Contact

    • SKU: 120-106132
    • Brand: White Rodgers
    In Stock!
    5 Avail (Ships in 24-48 Hrs)

    $12.99 / each

     
  • Solenoid w/ Continuous Duty, Normally Open Continuous Contact Rating 100 Amps (14 VDC Isolated Coil) View Specs

    Type 120 Solenoid, 14 VDC Coil, SPNO,Normally Open Continuous Contact

    • SKU: 120-107112
    • Brand: White Rodgers
    In Stock!
    3 Avail (Ships in 24-48 Hrs)

    $18.95 / each

     
  • Solenoid w/ Continuous Duty, Normally Open Continuous Contact Rating 100 Amps (12 VDC Isolated Coil) View Specs

    Type 124 Solenoid,
    12 VDC Isolated coil, SPNO

    • SKU: 124-105111
    • Brand: White Rodgers
    In Stock!
    15 Avail (Ships in 24-48 Hrs)

    $42.25 / each

     
  • Solenoid w/ Continuous Duty, Normally Open Continuous Contact Rating 100 Amps (24 VDC Isolated Coil) View Specs

    Type 124 Solenoid
    24 VDC Isolated coil, SPNO

    • SKU: 124-114111
    • Brand: White Rodgers
    In Stock!
    12 Avail (Ships in 24-48 Hrs)

    $39.95 / each

     
  • Solenoid Continuous Duty, Normally Open Continuous Contact Rating 100 Amps (36 VDC Isolated Coil) View Specs

    Type 124 Solenoid
    36 VDC Isolated coil, SPNO

    • SKU: 124-117111
    • Brand: White Rodgers
    In Stock!
    6 Avail (Ships in 24-48 Hrs)

    $41.45 / each

     

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More About Transformers

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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