Variable Speed Controller Brushed Thermatic Fan & EWP+1/4"" NPT Sensor

*Note: Only for Brushed Motors, for Brushless Motors, see Part #0550

High-performance Controller designed to optimise thermal management in automotive, industrial, marine and EV applications. It provides intelligent, precise control of either dual Thermatic Electric Fans or Electric Water Pumps (EWP), ensuring maximum, efficiency, system protection and reliable operation in the most demanding environments.

The #0555 and #0556 can be used with a combination of brushed electric fans so long as the combined current draw does not exceed 40A for each of the 2 fan channel. When using multiple fans on a single fan channel we recommend only having a maximum Combined current of 30A to 35A.

Flexible operating modes

• Four distinct control strategies to suit differing cooling system applications
• 12 & 24 Volt Applicable

Independent dual outputs

• Two fully isolated 40A channels allow for separate control of any combination of both fan/s and/or EWP
• Multiple fans or pumps can be wired to a single channel, provided the combined current does not exceed 40A.
• The recommended maximum combined current draw is 30A-35A.
• Unique setpoints, and operating modes can be applied to each output independently.

Shutdown control

• After ignition-off, the Controller will keep fans running for user-defined time or until defined shutdown time is reached to prevent heat-soak.

Manual overrides

• Dedicated ON/OFF control per channel by passes automatic control if required
• Configurable polarity accommodates different wiring and switch arrangements

Safety & failsafe options

• In the event of Sensor fault, outputs default to full speed to protect the system

Advanced Configuration options

• Temperature difference – defines ramping start relative to base set point
• Defines the speed at which the fan will start
• Shutdown time & temperature – controls post-ignition cooldown time & temperature
• Temperature offset – Adjusts for Sensor calibration
• Factory Reset – restores all parameters to default settings

Rugged, reliable design

• IP67 waterproof rating ensures durability in harsh conditions

Kit Overview

This kit includes two sensors, providing flexible installation options for coolant temperature monitoring.

Sensor 1: Temperature Probe (Ambient core temperature or Coolant Fitment)

This versatile probe can detect the Ambient core temperature of the radiator core when positioned within the radiator’s fin section. Alternatively, it can be fitted directly into the coolant system using a Temperature Sensor Adaptor Kit (Part 0409 or Part 0408), available from our store.

Sensor 2: ¼ NPT Thermal Sensor Kit (Coolant or Oil Fitment)

The ¼ NPT Thermal Sensor is designed for installation directly into the fluid. The sensor can be installed into a threaded port in the thermostat housing, engine block, or directly into the radiator tank. If preferred, it can be installed into the top radiator hose using the Temperature Sensor Adaptor Kit (Part 0419 or Part 0416), the sensor can also be installed into the Transmission hose using the Transmission Temp Gauge 1/4" NPT Sensor Adapter (Part 1007), available separately from our store.

Optional Sensor: M12 x 1.5 Thermal Sensor (Coolant or Oil Fitment)

The provided sensors can be upgraded to a M12 x 1.5 Thermal sensor (Part 0462). This upgraded sensor allows you to use existing spare sensor ports in the cooling system, available separately from our store.

KIT CONTENTS

• Variable speed fan controller: 1
• Mounting Kit - suit Thermal Sensor Probe: 1
• Thermal Sensor Probe: 1
• Sensor Thermal - coolant temp - ¼" NPT thread: 1
• Yellow - 6mm Ring Terminal: 2
• Yellow - Wire Joiner: 4
• RED - 3.5mm Fork Crimp Terminal: 4
• Instructions: 1

• Operating Voltage: 12 & 24 Volt
• Maximum Current: N/A
• Fan Application: All Brushed DCPL Fans, EWPs
• Speed: Variable Speed
• Single Fan Control: Brushed FAN only
• Duel Fan Control: Brushed FANs only
• EWP control: Brushed EWPs only
• Duel Fan Start-Up Delay: 4 independent Operating modes
• Manual Override - Turn On: 2 Fan Override Wires
• Manual Override - Turn off: 2 Fan Override Wires
• Temperature Setting Range: 5°C To 110°C (41°F To 230°F)
• Temperature Setting Method: Push Button
• Display Type: Led Segment + Status LEDs
• Mounting position: Engine bay
• Mounting options: Built in Mounting holes
• Accessories: Part #0578
• SPECIFICATIONS: Part #0409
• SPECIFICATIONS: Part #0422 (Duel Fan Only)
• SPECIFICATIONS: Part #0465

Accessories

• Part # 0408 - Temperature Sensor Adaptor Kit - 38mm Inline Adapter
• Part # 0409 - Temperature Sensor Adaptor Kit - 35mm Inline Adapter
• Part # 0415 - Air bleed 35mm Adapter Kit
• Part # 0416 - 38mm Inline Adapter with 2 x 1/4" NPT & 1 x Bung
• Part # 0417 - Air bleed 38mm Adapter Kit
• Part # 0418 - Compression Fitting 1/4"NPT
• Part # 0419 - 35mm Inline Adapter with 2 x 1/4" NPT & 1 x Bung
• Part # 1007 - Transmission Temp Gauge 1/4" NPT Sensor Adapter 3/8"

Sensor Upgrade Kits

• Part # 0462 - M12 x 1.5 Thermal Sensor Upgrade Kit
• Part # 0465 - ¼" NPT Thermal Sensor Upgrade Kit
• Part # 0468 - 1/8" NPT Thermal Sensor Upgrade Kit

Spare Parts

• Part # 0579 - Quick Fit Kit - suit Fans Trans Coolers
• Part # 10211 - Mounting Kit - suit Thermal Sensor Probe
• Part # 10460 - Thermal Sensor Probe
• Part # 10465 - Sensor Connector for ¼ & 1/8 NPT Thermal Sensor
• Part # 18415 - Sensor Thermal - coolant temp - ¼" NPT thread