Belimo AFRX24-MFT-S Spring Return Actuator 180 in-lb MFT 24V w/ Aux Switch

Description

The Belimo AFRX24-MFT-S is a heavy-duty spring return damper actuator engineered for precise, reliable control in commercial HVAC applications. Delivering 180 in-lb of torque, this actuator is built to handle demanding damper loads while offering exceptional flexibility through Belimo’s Multi-Function Technology (MFT) signal platform.

Versatile Signal Compatibility

The AFRX24-MFT-S supports multiple control signal types on a single unit, making it one of the most adaptable actuators in the Belimo lineup. Whether your BAS or control system uses analog, PWM, floating point, or simple On/Off signals, this actuator is ready to integrate without additional hardware.

• 500 Ohm input impedance for 4–20 mA analog control signals
• 1,500 Ohm input impedance for PWM (pulse-width modulation) control signals
• Floating point (tri-state) control mode supported
• On/Off control mode supported

Spring Return Operation

The spring return mechanism ensures the damper automatically returns to its fail-safe position upon loss of power, a critical safety and energy-management feature in air handling, economizer, and ventilation systems.

• Fail-safe spring return action for reliable position on power loss
• 180 in-lb nominal torque output for larger damper applications

Power Supply

• 24 Vac (50/60 Hz) or 24 Vdc operation
• Wide voltage tolerance for compatibility with standard HVAC control transformers

Auxiliary Switch

The integrated auxiliary switch provides end-position feedback to the building automation system, enabling status monitoring, interlock control, and proof-of-position signaling without the need for external accessories.

• Built-in auxiliary switch included
• Ideal for BAS end-position feedback and interlock applications

Key Features at a Glance

• Brand: Belimo
• SKU: AFRX24-MFT-S
• Actuator Type: Spring Return Damper Actuator
• Torque Output: 180 in-lb
• Control Signals: 4–20 mA (500 Ω), PWM (1,500 Ω), Floating Point, On/Off
• Power Supply: 24 Vac / 24 Vdc
• Auxiliary Switch: Included
• Fail-Safe: Spring Return

The Belimo AFRX24-MFT-S is the go-to choice for engineers and contractors who need a single actuator solution capable of adapting to virtually any control system. Its robust construction, multi-signal flexibility, and integrated auxiliary switch make it a premium selection for VAV systems, air handling units, economizers, and large commercial damper applications.