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Schneider Electric (Barber Colman) MS40-7043-501 Proportional Actuator S/R Direct Mount W/AUX Switch 35 In-lb 24V

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Special Price $371.58 Regular Price $412.45
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SKU
MS40-7043-501

The 24-volt DC stepper motor MS40-7043-501 from Schneider Electric (Barber Colman) is made especially for HVAC machinery. With its 35 lb-in holding torque, this small powerhouse is perfect for applications that need precision control and placement. Because of its proportional servo motor (designated "Prop Sr"), which allows for smooth speed variation and efficient operation, it is an efficient motor. The integrated "switch direct-mount" switch makes installation easier by enabling direct mounting and simple motor direction reversal. Because of its adaptability, it can be used with a range of HVAC devices, including air handlers, dampers, and valves. Benefits include quieter operation from smooth speed adjustments, enhanced system efficiency from precise control, and an easier installation process because of the integrated switch.

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Manufacturer Name: Schneider Electric (Barber Colman)
Product Number: MS40-7043-501
OEM Part Number: MS40-7043-501
Product Description: 24V 35Lb-In Prop Sr W/Sw Dirmt
Weight:4.03lbs/1827.98g

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Customer Questions
What maintenance is required for the Schneider Electric MS40-7043-501 Actuator?

Inspect electrical connections and ensure supply is stable. Check actuator linkage and mounting for looseness. Verify calibration and signal response periodically. Keep housing clean and dry, and tighten terminals to prevent control drift or intermittent operation.

What are common issues with the Schneider Electric MS40-7043-501 Actuator?

  • Actuator stalling or failure to respond to control signal.
  • Inconsistent positioning or drift from setpoint.
  • Auxiliary switch malfunction or contact failure.
  • Overheating or excessive motor noise under load.
  • Loss of torque or weak actuator output.

Installation Steps

Step 1: Disconnect power and confirm the HVAC system is fully de-energized before starting.

Step 2: Mount actuator directly onto the damper shaft and secure firmly using the clamp.

Step 3: Set rotation limits and ensure correct alignment for damper travel direction.

Step 4: Connect power and control wiring along with auxiliary switch leads.

Step 5: Restore power, run a full stroke test, and check smooth modulation and proper spring return action.