Honeywell MS7520A2007 Actuator

The Honeywell MS7520A2007 is a heavy-duty S20 Series Spring Return Direct Coupled Actuator designed for precise control of dampers and valves in commercial HVAC systems. This 24V damper actuator delivers 175 lb-in (20 Nm) of torque, making it a reliable solution for air handling units, economizers, and vent structures requiring fail-safe performance. It supports modulating (0/2-10 Vdc), 4-20 mA (with included 500 Ohm resistor), and floating control signals, providing maximum field flexibility. Built with a NEMA 2 rated enclosure, it operates efficiently in temperatures ranging from -40°F to 140°F. The Honeywell MS7520A2007 actuator features a self-centering shaft adapter that accommodates 3/8" to 1.06" round or 3/8" to 11/16" square shafts, ensuring a secure fit and reducing installation time. With a nominal 90-second driving time and a rapid 20-second spring return, this HVAC spring return actuator is the industry-standard replacement for GCA151.1P, M9216-AGD-2, and MF40-AF24 models.

Key Contractor Benefits:

• Universal Compatibility: Direct replacement for multiple Siemens, Johnson Controls, and Schneider Electric actuators.
• Mechanical Fail-Safe: Reliable spring return ensures the damper returns to the safe position during power loss.
• Precision Calibration: Integrated self-centering clamping adapter eliminates shaft slippage and mechanical play.
• Flexible Control: Field-selectable 0-10 Vdc or 2-10 Vdc signals with an auto-adapt feature for stroke scaling.
• Manual Override: Includes a manual operation crank for system testing and emergency positioning without power.

Common Questions:

What is the difference between modulating and floating control in this model?
The Honeywell S20 actuator supports both. Modulating control uses a 0/2-10 VDC or 4-20 mA signal for precise positioning, while floating control uses 24 VAC signals to drive the motor open or closed based on timed pulses.

Can this actuator be mounted outdoors?
This unit is NEMA 2 rated, protecting against dripping water and dust. For direct weather exposure, a separate protective weather shield is required to prevent moisture ingress.

How do I handle the 4-20 mA input signal?
The MS7520A2007 includes an internal 500 Ohm resistor. When wired correctly, this converts the 4-20 mA current signal into the 2-10 Vdc range required by the internal controller.

This item is not eligible for free shipping.

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.