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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  • 2 Pole Contactor, Type 122, 208/240 VAC Coil, 40 Amp Contacts, 997 Ohms DC Resistance, 25 mA View Specs

    Type 122 2 Pole Contactor 208/240 VAC Coil
    40 Amp Contacts

    • SKU: 90-249
    • Brand: White Rodgers
    Usually Ships 7-10 Days

    $17.95 / each

     
  • Fan Relay, Type 84, 24 VAC Coil, SPNO. Coil Data: 90 Ohms DC Resistance, 125 mA (Nominal), 3 VA (Nominal), 4 VA (Inrush) View Specs

    Type 84 Fan Relay
    24 VAC Coil, SPNO

    • SKU: 90-290Q
    • Brand: White Rodgers
    In Stock!
    32 Avail (Ships in 24-48 Hrs)

    $5.95 / each

     
  • Fan Relay, Type 84, 115/120 VAC Coil, SPNO. Coil Data: 2,000 Ohms DC Resistance, 25 mA (Nominal), 3 VA (Nominal), 4 VA (Inrush) View Specs

    Type 84 Fan Relay
    115/120 VAC Coil, SPNO

    • SKU: 90-291Q
    • Brand: White Rodgers
    In Stock!
    8 Avail (Ships in 24-48 Hrs)

    $7.15 / each

     
  • Fan Relay, Type 84, 240 VAC Coil, SPNO. Coil Data: 7,000 Ohms DC Resistance, 12.5 mA (Nominal), 3 VA (Nominal), 4 VA (Inrush) View Specs

    Type 84 Fan Relay
    240 VAC Coil, SPNO

    • SKU: 90-292Q
    • Brand: White Rodgers
    In Stock!
    1 Avail (Ships in 24-48 Hrs)

    $7.15 / each

     
  • Fan Relay, Type 84, 24 VAC Coil, SPDT. Coil Data: 90 Ohms DC Resistance, 125 mA (Nominal), 3 VA (Nominal), 4 VA (Inrush) View Specs

    Type 84 Fan Relay
    24 VAC Coil, SPDT

    • SKU: 90-293Q
    • Brand: White Rodgers
    In Stock!
    50 Avail (Ships in 24-48 Hrs)

    $6.15 / each

     
  • Fan Relay, Type 84, 115/120 VAC Coil, SPDT. Coil Data: 2,000 Ohms DC Resistance, 25 mA (Nominal), 3 VA (Nominal), 4 VA (Inrush) View Specs

    Type 84 Fan Relay
    115/120 VAC Coil, SPDT

    • SKU: 90-294Q
    • Brand: White Rodgers
    In Stock!
    12 Avail (Ships in 24-48 Hrs)

    $7.85 / each

     
  • Fan Relay, Type 84, 208/240 VAC Coil, SPDT. Coil Data: 7,000 Ohms DC Resistance, 12.5 mA (Nominal), 3 VA (Nominal), 4 VA (Inrush) View Specs

    Type 84 Fan Relay
    208/240 VAC Coil, SPDT

    • SKU: 90-295Q
    • Brand: White Rodgers
    In Stock!
    11 Avail (Ships in 24-48 Hrs)

    $10.65 / each

     
  • 2 Pole, Type 91, 24 VAC Coil, DPDT, 2 Sets Of Power Rated Contacts. 17.5 Ohms DC Resistance, 334 mA View Specs

    Type 91 2 Pole Contactor 24 VAC Coil, DPDT

    • SKU: 90-340
    • Brand: White Rodgers
    In Stock!
    82 Avail (Ships in 24-48 Hrs)

    $6.99 / each

     
  • 2 Pole, Type 91, 115/120 VAC Coil, DPDT, 2 Sets Of Power Rated Contacts. 420 Ohms DC Resistance, 66 mA View Specs

    Type 91 2 Pole Switching Relay, 115/120 VAC Coil DPDT

    • SKU: 90-341
    • Brand: White Rodgers
    In Stock!
    15 Avail (Ships in 24-48 Hrs)

    $7.30 / each

     
  • 2 Pole, Type 91, 208/240 VAC Coil, DPDT, 2 Sets Of Power Rated Contacts. 1,600 Ohms DC Resistance, 38 mA View Specs

    Type 91 2-Pole Switching Relay, 208/240 VAC Coil DPDT

    • SKU: 90-342
    • Brand: White Rodgers
    In Stock!
    9 Avail (Ships in 24-48 Hrs)

    $7.65 / each

     
  • Fan Relay, Type 184, 24 VAC Coil, 50/60 Hz, SPNO. Coil Data: 77 Ohms DC Resistance, 125 mA (Nominal) View Specs

    Type 184 Heavy Duty Fan Relay, 24 VAC Coil, SPNO

    • SKU: 90-360
    • Brand: White Rodgers
    In Stock!
    21 Avail (Ships in 24-48 Hrs)

    $5.95 / each

     
  • Fan Relay, Type 184, 120 VAC Coil, 50/60 Hz, SPNO. Coil Data: 2000 Ohms DC Resistance, 25 mA (Nominal) View Specs

    Type 184 Heavy Duty Fan Relay, 120 VAC Coil, SPNO

    • SKU: 90-362
    • Brand: White Rodgers
    In Stock!
    4 Avail (Ships in 24-48 Hrs)

    $6.95 / each

     
  • Fan Relay, Type 184, 208/240 VAC Coil, 50/60 Hz, SPNO. Coil Data: 6050 Ohms DC Resistance, 12.5 mA View Specs

    Type 184 Heavy Duty Fan Relay, 208/240 VAC Coil SPNO

    • SKU: 90-364
    • Brand: White Rodgers
    Usually Ships 7-10 Days

    $8.65 / each

     
  • Fan Relay, Type 184, 24 VAC Coil, 50/60 Hz, SPDT. Coil Data: 77 Ohms DC Resistance, 125 mA View Specs

    Type 184 Heavy Duty Fan Relay, 24 VAC Coil, SPDT

    • SKU: 90-370
    • Brand: White Rodgers
    In Stock!
    415 Avail (Ships in 24-48 Hrs)

    $6.70 / each

    $50.80 / box
    8 x $6.35

     
  • Fan Relay, Type 184, 120 VAC Coil, 50/60 Hz, SPDT. Coil Data: 2000 Ohms DC Resistance, 25 mA View Specs

    Type 184 Heavy Duty Fan Relay, 120 VAC Coil, SPDT

    • SKU: 90-372
    • Brand: White Rodgers
    In Stock!
    2 Avail (Ships in 24-48 Hrs)

    $10.95 / each

     
  • Plug-In Replacement Relay View Specs

    Plug-In Replacement Relay

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

    $40.59 / each

     
  • Fan Relay, Type 184, 208/240 VAC Coil, 50/60 Hz, SPDT. Coil Data: 6050 Ohms DC Resistance, 12.5 mA View Specs

    Type 184 Heavy Duty Fan Relay, 208/240 VAC Coil SPDT

    • SKU: 90-374
    • Brand: White Rodgers
    In Stock!
    2 Avail (Ships in 24-48 Hrs)

    $11.65 / each

     
  • Fan Relay, Type 184, 24 VAC Coil, 50/60 Hz, SPNO/SPNC. Coil Data: 77 Ohms DC Resistance, 125 mA View Specs

    Type 184 Heavy Duty
    Fan Relay, 24 VAC Coil SPNO/SPNC

    • SKU: 90-380
    • Brand: White Rodgers
    In Stock!
    31 Avail (Ships in 24-48 Hrs)

    $6.55 / each

    $50.80 / box
    8 x $6.35

     
  • Fan Relay, Type 184, 120 VAC Coil, 50/60 Hz, SPNO/SPNC. Coil Data: 2000 Ohms DC Resistance, 25 mA View Specs

    Type 184 Heavy Duty
    Fan Relay, 120 VAC Coil SPNO/SPNC

    • SKU: 90-382
    • Brand: White Rodgers
    In Stock!
    1 Avail (Ships in 24-48 Hrs)

    $13.65 / each

     
  • Fan Relay, Type 184, 208/240 VAC Coil, 50/60 Hz, SPNO/SPNC. Coil Data: 6050 Ohms DC Resistance, 12.5 mA (Nominal) View Specs

    Type 184 Heavy Duty Fan Relay, 208/240 VAC Coil SPNO/SPNC

    • SKU: 90-384
    • Brand: White Rodgers
    In Stock!
    2 Avail (Ships in 24-48 Hrs)

    $14.25 / 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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