AT03069 (40700249): Murphymatic® Engine Throttle Controller

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SKU: AT03069 (40700249)

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AT03069: Automatic Engine Throttle Controller, 12 or 24 VDC. (40700249)

The AT03069 Murphymatic® Engine Throttle Controller is a completely reliable heavy-duty device developed specifically to automatically control engine speed to meet system demand. Low current, high torque, solid state switching, and electronic clutch make it ideal for all automatic and semiautomatic engine systems.
Used with the appropriate Murphy Swichgage®, near constant pressure, level, and load can be maintained.

Common applications include controlling pressure in City water and irrigation systems; controlling level in water or oil storage tanks, sewer disposal systems and flood control basins; controlling temperature in multi engine cooling systems and air conditioning systems; and controlling engine load depending upon external conditions.

Some of the specifications are as follows:
Voltage: 11-28 VDC negative ground.
Maximum Current: 500 mA (1/2 amp).
Torque: 25 inch pounds.
Linkage adjustment on Lever Arm-5 holes: Adjusts travel: 1-3/6" (30 mm); 1-11/16" (43 mm); 2" (51 mm); 2-1/4" (57 mm) approximately. Travel Time: 11 to 20 seconds depending on the voltage and force applied.


  1. Sales Bulletin
  2. Installation Instructions

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Enlarged photo of the AT03069 Engine Throttle Controller



MurCal is an Authorized Distributor of Murphy by Enovation products.
MurCal provides experienced application and product support, before and after the sale.

For California customers: Prop 65 WARNING: This product may have been manufactured with or uses components that can expose you to chemicals which are known to the State of California to cause cancer. For more information go to


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