Description
The Belimo AMB24-SR is a non spring return damper actuator designed to deliver 180 in-lb (20 Nm) of torque for precise modulating airflow control. It operates on AC/DC 24 V power and supports 2–10 V control with position feedback for accurate damper positioning.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Belimo |
| Category |
Dampers & Actuators |
| Part Number |
AMB24-SR |
| 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) |
2.5 W |
| Power Consumption (Rest) |
0.4 W |
| Transformer Sizing |
5 VA |
| Control Signal |
2…10 V (4…20 mA with resistor) |
| Input Impedance |
100 kΩ (2…10 V), 500 Ω (4…20 mA) |
| Position Feedback |
2…10 V |
| Torque Output |
180 in-lb (20 Nm) |
| Angle of Rotation |
Max. 95°, adjustable |
| Running Time (Motor) |
95 s / 90° |
| Electrical Connection |
18 AWG plenum cable, 1 m, 1/2" NPT |
| Degree of Protection |
NEMA 2 / IP54 |
| Noise Level |
45 dB(A) |
| Weight |
2.5 lb (1.1 kg) |
Information About AMB24-SR
The AMB24-SR is part of Belimo’s AM series of non fail-safe damper actuators developed for reliable modulating control in commercial HVAC systems. It features electronic overload protection across the full 0–95° rotation range to maintain consistent torque and protect internal components from mechanical stress. The actuator supports 2…10 V control and can be configured for 4…20 mA operation using an external resistor, ensuring compatibility with a wide range of building automation systems. A compact housing, selectable motor direction, and manual override push button simplify installation, commissioning, and ongoing service.
Key Features
- Non Spring Return Operation: Provides controlled damper positioning without a fail-safe spring, suitable for applications where power-loss return is not required.
- High Torque Output: Delivers a constant 180 in-lb (20 Nm) torque to reliably drive medium and large air dampers under varying pressure conditions.
- Modulating Control Capability: Accepts a 2…10 V control signal with optional 4…20 mA configuration for precise proportional airflow regulation.
- Electronic Overload Protection: Actively protects the actuator throughout the full rotation range by preventing damage from overload or obstruction.
- Integrated Position Feedback: Supplies a 2…10 V feedback signal for continuous monitoring and closed-loop control integration.
- Selectable Direction Of Motion: Motor rotation direction can be set via onboard switch to accommodate different mounting orientations.
- Manual Override Function: External push button allows manual damper positioning during setup, testing, or maintenance.
The AMB24-SR delivers the reliability and precision required for accurate modulating damper control in non fail-safe HVAC applications.
