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Honeywell MS4120K1000 Ruskin Actuator RLH-120

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1  Review Add Your Review
Special Price $313.94 Regular Price $348.48
In stock
SKU
MS4120K1000
The Honeywell MS4120K1000 Ruskin Actuator RLH-120 is used to control damper movement and regulate airflow within compatible ventilation equipment. Built with an electric actuator mechanism, the component adjusts damper positioning by converting control signals into mechanical movement during system operation. Frequently utilized in air handlers, duct systems, and airflow control applications associated with HVAC systems, it assists with managing air distribution and ventilation requirements. Mounted onto the required damper assembly during servicing or replacement procedures, the actuator helps achieve accurate blade positioning and controlled airflow adjustment.
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Manufacturer:
https://www.partshnc.com/media/catalog/product/m/s/ms4120k1000.jpg

Specifications

  • Type: Ruskin Actuator
  • Voltage: 120V AC
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Product Questions (2)
Customer Questions
What maintenance is required for the Honeywell MS4120K1000 Actuator?

Periodically inspect the actuator for loose mounting hardware and secure electrical connections. Clean dust and debris from the housing to ensure smooth movement. Proper maintenance helps reliable damper or valve control. Always disconnect power before servicing.

What are common issues with the Honeywell MS4120K1000 Actuator?

  • Failure to respond to control signals.
  • Sticking or sluggish movement.
  • Loose or corroded electrical connections.
  • Excess vibration causing noise.
  • Inaccurate position feedback.

Installation Steps

Step 1: Turn off all power to the HVAC system to ensure safety.

Step 2: Remove the existing actuator from the damper or valve shaft.

Step 3: Mount the new actuator securely, aligning it with the shaft and mounting holes.

Step 4: Connect wiring according to manufacturer instructions, verifying proper voltage and signal type.

Step 5: Restore power and test actuator operation to ensure smooth movement.