EFB24-MFT-S | Belimo Programmable Spring Return Damper Actuator 270 In Lb With Auxiliary Switches 24V

Belimo · Motors & Motion

Description  The Belimo EFB24-MFT-S is a high-torque spring return damper actuator delivering 270 in-lb (30 Nm) for precise and configurable airflow control in HVAC systems. It operates on AC/DC 24 V power and combines MFT programmable control with integrated auxiliary switches for enhanced monitoring and safety functions.     Technical Specifications  Condition New/Never Used Surplus Brand Belimo Category Actuators & Dampers Part Number EFB24-MFT-S Subcategory Damper Actuators Nominal Voltage AC/DC 24 V Nominal Frequency 50/60 Hz Voltage Range AC 19.2…28.8 V / DC 21.6…28.8 V Power Consumption (Operation) 9.5 W Power Consumption (Rest) 4.5 W Transformer Sizing 16 VA Control Signal MFT programmable, 2…10 V Input Impedance 100 kΩ (2…10 V), 500 Ω (4…20 mA), 1500 Ω (PWM/On-Off/Floating) Operating Modes VDC, PWM, On/Off, Floating Point Position Feedback 2…10 V Torque Output 270 in-lb (30 Nm) Angle of Rotation 35…95°, adjustable Running Time (Motor) 60…150 s / 90° Running Time (Fail-Safe) <20 s @ -20…50°C Auxiliary Switches 2x SPDT Electrical Connection Dual 18 GA cables, 1 m, 1/2" conduit Ambient Temperature -30…50°C Weight 12 lb (5.3 kg)   Information About EFB24-MFT-S The EFB24-MFT-S is part of Belimo’s EFB series of heavy-duty spring return actuators designed for demanding HVAC damper applications. It integrates Belimo MFT multi-functional technology, allowing field configuration of control signals, operating ranges, and actuator behavior to match specific system requirements. The actuator includes two factory-installed auxiliary switches to support position indication, interlocking, and safety-related control logic. Electronic overload protection, double insulation, and adjustable mechanical end stops ensure consistent performance, installation flexibility, and long-term reliability. Key Features Spring Return Fail-Safe Operation: Integrated spring mechanism ensures rapid return to a defined safety position during power loss to protect HVAC systems and equipment. High Torque Performance: Provides a constant 270 in-lb (30 Nm) torque output suitable for large or high-pressure air damper applications. MFT Programmable Control Technology: Supports configurable control modes including 2…10 V, 4…20 mA, PWM, on/off, and floating point for broad system compatibility. Dual Auxiliary SPDT Switches: Includes two adjustable auxiliary switches for precise position indication, sequencing, and safety interlocks. Configurable Control Range: Adjustable start and end points allow accurate alignment of actuator response with building automation requirements. Electronic Overload Protection: Protects internal components throughout the full 0…95° rotation range against mechanical overload or obstruction. Manual Override Capability: Supplied hex crank enables manual damper positioning during commissioning, testing, or maintenance. The EFB24-MFT-S delivers the reliability and precision required for programmable airflow modulation and dependable fail-safe damper operation in HVAC systems.

Brand: Belimo · Category: Motors & Motion

Key features

• Spring Return Fail-Safe Operation: Integrated spring mechanism ensures rapid return to a defined safety position during power loss to protect HVAC systems and equipment.
• High Torque Performance: Provides a constant 270 in-lb (30 Nm) torque output suitable for large or high-pressure air damper applications.
• MFT Programmable Control Technology: Supports configurable control modes including 2…10 V, 4…20 mA, PWM, on/off, and floating point for broad system compatibility.
• Dual Auxiliary SPDT Switches: Includes two adjustable auxiliary switches for precise position indication, sequencing, and safety interlocks.
• Configurable Control Range: Adjustable start and end points allow accurate alignment of actuator response with building automation requirements.
• Electronic Overload Protection: Protects internal components throughout the full 0…95° rotation range against mechanical overload or obstruction.
• Manual Override Capability: Supplied hex crank enables manual damper positioning during commissioning, testing, or maintenance.

Specifications

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