Description
Belimo SY4-120MFT Non-Spring Return Damper Actuator
The Belimo SY4-120MFT is a heavy-duty, non-spring return damper actuator engineered for demanding commercial and industrial HVAC applications. Delivering a robust 3560 in-lb of torque, this actuator is built to handle large damper assemblies with precision and reliability. Its versatile control input compatibility — supporting 4-20mA (500 Ohm), PWM (1500 Ohm), floating point, and On/Off — makes it an ideal choice for a wide range of building automation and control system integrations.
Key Features
- Non-spring return design for reliable, power-driven positioning
- High torque output: 3560 in-lb for large damper applications
- Operating voltage: 120Vac
- Multiple control input modes: 4-20mA (500 Ohm impedance), PWM (1500 Ohm impedance), floating point, and On/Off
- NEMA 4X enclosure rating — suitable for wet, corrosive, and outdoor environments
- Designed for seamless integration with building automation systems (BAS)
Control Signal Compatibility
- 4-20mA analog control — 500 Ohm input impedance
- PWM (Pulse Width Modulation) control — 1500 Ohm input impedance
- Floating point (tri-state) control
- On/Off control
Enclosure & Environmental Rating
- NEMA 4X rated enclosure for protection against dust, water, and corrosion
- Suitable for indoor and outdoor installations in harsh environments
Applications
- Large commercial HVAC damper control
- Industrial ventilation systems
- Building automation and energy management systems
- Air handling units (AHUs) requiring high-torque actuation
Why Choose Belimo?
Belimo is a globally recognized leader in actuator and valve technology for the HVAC industry. The SY4-120MFT reflects Belimo’s commitment to precision engineering, energy efficiency, and long service life — ensuring your HVAC systems perform at their best for years to come.
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