Belimo AMB24-3-S Actuator

The Belimo AMB24-3-S is a high-torque rotary actuator engineered for precise control of ball valves and dampers in demanding HVACR applications. Delivering 180 in-lb of torque, this unit provides reliable On/Off or Floating point control across 24VAC/DC power systems. Designed for professional installation, it features an integrated SPDT auxiliary switch for position signaling or interlocking safety circuits. The brushless DC motor technology ensures constant torque across the 95-degree rotation range, while the NEMA 2 (IP54) housing allows for versatile mounting orientations in standard mechanical environments. This direct-coupled actuator streamlines retrofits and new installations by eliminating the need for complex linkages, maintaining a consistent 95-second run time for balanced system response. Technicians value the manual override button for quick commissioning and the selectable direction of rotation switch, which simplifies field configuration without re-wiring.

• 180 in-lb Torque Rating: Provides sufficient force for large-diameter ball valves and airflow dampers without stalling.
• Integrated Auxiliary Switch: Built-in SPDT switch (adjustable 0 to 95 degrees) enables seamless feedback loops and equipment sequencing.
• Multi-Voltage Compatibility: Operates on both 24VAC and 24VDC, reducing inventory requirements for diverse job sites.
• Floating Control Logic: Supports 3-point control for incremental positioning, optimizing thermal performance in VAV and air handling units.
• Durability: Features an electronic motor protection system against overloading, increasing the service life of the control assembly.

Is the AMB24-3-S suitable for fail-safe applications?
No, this specific model is non-spring return. For applications requiring a safety return position upon power loss, a Belimo AF or NF series actuator should be specified.

Can I install this actuator outdoors?
The unit is rated NEMA 2/IP54. It is protected against falling dirt and light splashing water. For full outdoor exposure, a protective NEMA 4X weather shield is required.

How do I change the rotation direction for CCW or CW operation?
The direction of rotation is field-reversible using a simple toggle switch located under the actuator cover, allowing for easy adaptation to valve or damper orientation.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.