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Vehicle Info NeededMechanical Thermatic Fan Switch
Ships on Sep 03, 2026
Lowest Price Guarantee- Mechanical Thermatic Fan Switch
- Adjustable 104° to 212°F
- 12 & 24 Volt
The Mechanical Thermal Switch can be used with Thermatic Electric Fans & EWP's. It senses the coolant temperature after it passes through the engine block prior to entering the radiator and is adjustable from 104° to 212°F (40° to 100°C). The Thermal Switch is mounted near the radiator and the stainless steel probe fitted inside the radiator hose. The Thermal Switch & relay kit enables a fan to operate both thermally and also when the air conditioning is running.
*Note: If using this switch for use with your EWP's, it will not vary the speed of the pump in response to engine temperature but rather turn the pump on and off at your set temperature.
Complete Fan Control
Davies Craig Digital Thermatic Switches automatically activate single or twin fans or a fan and Electric Water Pump at your set / targeted temperature when extra cooling is required.
Davies Craig offers three types of Thermatic Fan Switches:
Mechanical Thermatic Fan Switch (Part # 317-DC-0401 or Part # 317-DC-0400 Combo Kit) senses the coolant temperature after it passes through the engine block prior to entering the radiator, or combo kit offering probe placement in the top radiator hose.
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Digital Thermatic Fan Switch (Part # 317-DC-0444) senses air temperature near the top radiator hose as it passes through the radiator or senses coolant temperature (with part # 317-DC-0409)for single or twin fan operation.
Premium Digital Thermatic Switch (Part # 317-DC-0455, DC-0500) senses both air or coolant temperatures (with part # 317-DC-0409), single or twin fan operation, attractive dashboard-mounted monitor.
Thermatic Fan Switches Feature:
- Automatically activate the electric fans at the set/targeted temperature when cooling is required.
- Can be adjusted over a wide temperature range.
- Can be used to operate the electric water pump when operated as an auxiliary pump to the mechanical water pump.
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