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Belimo GMX120-3 NSR Damper Actuator 360 In-lb 100-240 VAC

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Special Price $423.28 Regular Price $469.85
Out of stock
SKU
GMX120-3
Belimo GMX120-3 NSR Damper Actuator is an essential part that is used for accurate control of airflow in HVAC systems.It is a non-spring return actuator with 360 in-lbs of torque, 100-240 VAC power supply and floating control. It also permits accurate location of dampers in air handling units, ventilation systems and other HVAC equipment. Some of the advantages are better control of energy consumption due to better management of airflow, better comfort to the occupants due to constant temperatures and better reliability due to the tough nature of the system.
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Specifications

  • Type: Damper Actuator
  • Fail-Safe Mode: Non-Spring Return
  • Torque: 360 in-lb
  • Voltage: 100-240 VAC
  • Control Type: Floating
Manufacturer Name: Belimo
Product Number: GMX120-3
OEM Part Number: GMX120-3
Product Description: 360Inlb,100-240Vac,Nsr
Weight:4.24lbs/1923.23g

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Product Questions (2)
Customer Questions
What maintenance is required for the Belimo GMX120-3 Damper Actuator?

Inspect the actuator and damper linkage to ensure smooth movement and secure mounting. Check electrical connections and verify supply for stable operation and prevent faults. Clean dust buildup and test control signals periodically to maintain accurate HVAC performance.

What are common issues with the Belimo GMX120-3 Damper Actuator?

  • Actuator not responding due to wiring or power faults.
  • Damper sticking from mechanical binding or linkage misalignment issues.
  • Incorrect positioning from control signal or input errors.
  • Overheating or internal motor wear causing reduced torque output.

Installation Steps

Step 1: Switch off power supply and confirm zero voltage at actuator wiring points.

Step 2: Open access panel and note existing wire positions before removal.

Step 3: Loosen and detach old actuator from damper shaft and bracket assembly.

Step 4: Fit new actuator onto shaft, ensuring correct alignment and tight mounting.

Step 5: Reconnect wires to identical terminal designations as shown in wiring diagram.

Step 6: Restore power and cycle actuator through full range.