GM24A-SR | Belimo Rotary Spring Return Actuator 40 Nm 24V Modulating

Belimo · Motors & Motion

Description  The Belimo GM24A-SR is a rotary spring return actuator designed to deliver 40 Nm of torque for precise modulating control of HVAC dampers. It operates on AC/DC 24 V power and supports 2–10 V control with position feedback for accurate and stable damper positioning.     Technical Specifications  Condition New/Never Used Surplus Brand Belimo Category Actuators & Dampers Part Number GM24A-SR Subcategory Rotary Actuators Nominal Voltage AC/DC 24 V Nominal Frequency 50/60 Hz Voltage Range AC/DC 19.2…28.8 V Power Consumption (Operation) 4.5 W Power Consumption (Rest) 2 W Power Consumption (Wire Sizing) 6.5 VA Control Signal 2…10 V Input Impedance 100 kΩ Position Feedback 2…10 V Position Accuracy ±5% Torque Output 40 Nm Angle of Rotation Max. 95°, adjustable Running Time (Motor) 150 s / 90° Electrical Connection 1 m cable, 4x 0.75 mm² Mechanical Interface Universal shaft clamp 12…26.7 mm Degree of Protection IP54 / NEMA 2 Sound Level 45 dB(A) Ambient Temperature -30…50°C Weight 1.6 kg   Information About GM24A-SR The GM24A-SR is part of Belimo’s GM series of rotary spring return actuators developed for reliable modulating control in commercial HVAC applications. It features a robust design with electronic protection and adjustable mechanical end stops to ensure consistent performance across the full operating range. The actuator supports parallel operation and provides precise position feedback, making it suitable for coordinated multi-actuator systems. A universal shaft clamp, selectable rotation direction, and lockable manual override simplify installation and commissioning in a wide range of damper configurations. Key Features Spring Return Fail-Safe Operation: Integrated spring mechanism drives the actuator to a predefined safety position during power loss, supporting system protection and operational safety. High Torque Rotary Output: Delivers a constant 40 Nm torque suitable for large air dampers and demanding airflow control applications. Modulating Control Interface: Accepts a 2…10 V control signal to enable precise proportional damper positioning. Integrated Position Feedback: Provides a 2…10 V feedback signal with ±5% accuracy for continuous position monitoring and closed-loop control. Adjustable Mechanical Rotation Limits: Mechanical end stops allow rotation to be limited on both sides up to a maximum of 95°. Selectable Direction Of Motion: Motor rotation direction can be configured via onboard switch to match installation requirements. Manual Override With Locking: Push-button manual override allows safe local operation and can be locked to prevent unintended adjustment. Universal Shaft Interface: Reversible clamp accommodates shaft sizes from 12 to 26.7 mm, supporting flexible mounting options. The GM24A-SR delivers the reliability and precision required for accurate modulating damper control and dependable fail-safe operation in HVAC systems.

Brand: Belimo · Category: Motors & Motion

Key features

• Spring Return Fail-Safe Operation: Integrated spring mechanism drives the actuator to a predefined safety position during power loss, supporting system protection and operational safety.
• High Torque Rotary Output: Delivers a constant 40 Nm torque suitable for large air dampers and demanding airflow control applications.
• Modulating Control Interface: Accepts a 2…10 V control signal to enable precise proportional damper positioning.
• Integrated Position Feedback: Provides a 2…10 V feedback signal with ±5% accuracy for continuous position monitoring and closed-loop control.
• Adjustable Mechanical Rotation Limits: Mechanical end stops allow rotation to be limited on both sides up to a maximum of 95°.
• Selectable Direction Of Motion: Motor rotation direction can be configured via onboard switch to match installation requirements.
• Manual Override With Locking: Push-button manual override allows safe local operation and can be locked to prevent unintended adjustment.
• Universal Shaft Interface: Reversible clamp accommodates shaft sizes from 12 to 26.7 mm, supporting flexible mounting options.

Specifications

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