Belimo GRB24-MFT-5 24V NSR Modulating Damper Actuator

Description

Belimo GRB24-MFT-5 24V Non-Spring Return Modulating Actuator

The Belimo GRB24-MFT-5 is a high-performance, non-spring return (NSR) modulating actuator engineered for precise damper control in commercial and industrial HVAC applications. Powered by 24 VAC/DC, this actuator features Belimo’s industry-leading Multi-Function Technology (MFT), allowing field configuration of the control signal to match virtually any building automation or control system requirement — without the need for additional accessories or rewiring.

Multi-Function Technology (MFT)

The MFT platform provides unmatched flexibility by supporting a wide range of input/output signal types, configurable directly at the actuator. This makes the GRB24-MFT-5 ideal for retrofits, new installations, and systems requiring adaptable control strategies.

• Accepts 0–10 VDC, 2–10 VDC, 0–20 mA, and 4–20 mA control signals
• Supports floating point (tri-state) and PWM control modes
• Field-selectable signal configuration via onboard switches
• Proportional feedback signal output (0–10 VDC) for position confirmation

Electrical & Mechanical Specifications

• Power supply: 24 VAC/DC (±20%)
• Torque output: 5 Nm (44 in-lb)
• Non-spring return (NSR) operation
• Modulating (proportional) control
• Rotation: 95° nominal
• Manual override: push-button with gear disengagement
• Position indicator: visual, 0–90° scale
• Auxiliary switch: available (model dependent)

Construction & Environmental Ratings

• Enclosure rating: IP54 (dust and splash resistant)
• Ambient operating temperature: -22°F to 122°F (-30°C to 50°C)
• Housing: rugged, UL-listed plastic enclosure
• Certifications: UL Listed, CE Marked, cULus

Applications

The GRB24-MFT-5 is designed for use with Belimo globe valve bodies and is well-suited for a broad range of HVAC control applications including:

• Variable air volume (VAV) systems
• Air handling units (AHUs)
• Fan coil units
• Commercial building automation systems (BAS)
• Chilled water and hot water coil control

Why Choose Belimo?

Belimo is the global market leader in actuator and control valve solutions for HVAC systems. The GRB24-MFT-5 reflects Belimo’s commitment to energy efficiency, installation simplicity, and long-term reliability — backed by a 5-year warranty and decades of proven field performance.