R60B-45 Fan Delay Board. 1s ON delay, 45s OFF delay. 2.5" x 2.5", PCB 24 VAC

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The 1 speed fan control board (R60B) is an electronic fan control board which provides, in one device, control of a line voltage fan motor. The primary purpose is to control the fan motor used in air-conditioning & heating systems. The control board is powered by 24VAC input and will accept a 24VAC fan signal from the thermostat. Customized control boards for Air Conditioning and Heating Applications.


The control board has a fixed 1 second fan ON delay. There is a fixed 45 seconds post fan OFF delay in which the relay will be energized for another 45 seconds after the thermostat fan signal (G) is turned off. Screw-in terminals will be used for R, C and G connections. Fan connections will be quick connects located on the relay. 

Electrical specification

- Nominal Input : 24 VAC 

- Operating Input range : 18-30VAC 

- Fan Outputs : 12 FLA (30 LRA) at 240 VAC 

Mechanical specification

- PCB Material: CEM 1 

- Temperature 

i. Operating Temperature:–40 o F to +158 o F (-40 oC to +70 oC). 

ii. Storage temperature: -40 o F to +185 o F (-40 oC to +85 oC). 

- Humidity 

i. Operating: 10% to 95% non-condensing,–22 o F to +104 o F (-30 oC to +40 oC). 

ii. Storage: 10% to 95% non-condensing. 

- Vibration No damage from 5G sinusoidal acceleration at 10 to 150 Hz. 

- Mechanical impact No damage or miss-operation when the sheet metal to which the device is mounted is hit with a 3 inch ball with 3 foot pounds. 

- Operating Life The relays are capable of 100K cycles at full load. 


PCB Dimension: 2.5”x 2.5”


Line voltage connections are .250”x 0.032”quick connect terminals on top of the relay. 

4 blank quick connects are located on the board for unused fan speed wires. 

Quick connect terminals for R and C input. 

Screw-in terminal connections for a thermostat. 

- 24VAC Hot input ( R ) 

- 24VAC Neutral Input ( C ) - Fan Input ( G )

Product Specs

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Warranty Information

1 year seller warranty
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