Belimo AFB24-MFT-X1 Spring Return Proportional Damper Actuator 24V

Description

Belimo AFB24-MFT-X1 Spring Return Proportional Damper Actuator

The Belimo AFB24-MFT-X1 is a high-performance, spring-return damper actuator engineered for precise proportional control in commercial and industrial HVAC applications. Powered by 24 VAC/DC, this actuator features Belimo’s Multi-Function Technology (MFT), allowing field-selectable control signals to match virtually any building automation or control system requirement without the need for additional accessories.

Multi-Function Technology (MFT) Control

The MFT platform provides unmatched flexibility by supporting multiple input signal types, selectable via onboard DIP switches. This eliminates the need to stock multiple actuator models and simplifies commissioning across diverse control architectures.

• Selectable control signals: 0–10 VDC, 2–10 VDC, 0–20 mA, and 4–20 mA
• Proportional modulating control for precise damper positioning
• DIP switch configuration — no external adapters required
• Compatible with most DDC and BAS control systems

Spring-Return Fail-Safe Operation

The AFB24-MFT-X1 incorporates a reliable spring-return mechanism that automatically drives the damper to its fail-safe position upon loss of power or control signal — a critical safety feature for smoke control, ventilation, and energy management applications.

• Spring-return fail-safe design for dependable emergency positioning
• Fail-safe position configurable to open or closed
• Consistent return torque independent of power availability

Key Specifications

• Brand: Belimo
• Model / SKU: AFB24-MFT-X1
• Power Supply: 24 VAC/DC
• Control Type: Proportional (MFT — Multi-Function Technology)
• Actuator Type: Spring Return
• Nominal Torque: 35 in-lb (4 Nm)
• Operating Temperature: -22°F to 122°F (-30°C to 50°C)
• Housing Protection: IP54 (dust and splash resistant)
• Mounting: Direct-coupled, clamp-type shaft connection
• Shaft Size Compatibility: 3/8 in to 1/2 in (9.5 mm to 12.7 mm) round or square

Design & Installation Features

• Direct-coupled design — no crank arm or linkage required
• Manual override for easy damper positioning during installation and service
• Compact, rugged housing suitable for tight mechanical spaces
• Plenum-rated cable for code-compliant installation
• UL Listed and CSA Certified

Ideal Applications

• Variable air volume (VAV) systems
• Outside air and exhaust damper control
• Mixed air and economizer damper applications
• Commercial building automation systems
• Smoke and fire-rated damper control (where applicable)

The Belimo AFB24-MFT-X1 delivers the reliability, flexibility, and ease of installation that HVAC professionals demand. Backed by Belimo’s industry-leading quality and the convenience of MFT signal selection, this actuator is a smart choice for any proportional damper control application.