Belimo AFXUP-S N4 Actuator

24v-240v on/off Nema 4X S/R

Belimo AFXUP-S N4 Actuator – Configurable Spring Return Damper Actuator, 180 in-lb, NEMA 4X

The Belimo AFXUP-S N4 Actuator is a high-performance, configurable spring return damper actuator designed for reliable on/off control in demanding HVAC applications. Engineered with a durable NEMA 4X / UL Type 4X enclosure, this actuator is built to withstand harsh indoor and outdoor environments, providing long-lasting protection against dust, moisture, and corrosion.

With a powerful 180 in-lb (20 Nm) torque output, the AFXUP-S N4 delivers dependable operation for air dampers and ventilation systems. It offers wide voltage flexibility, supporting AC 24–240 V and DC 24–125 V, making it easy to integrate into existing or new control systems. The actuator features 2x SPDT auxiliary switches, a reversible fail-safe rotation, and field-selectable motor direction for enhanced installation flexibility.

Designed for smooth and efficient performance, it provides a 75-second motor run time (90°) and a rapid <20-second fail-safe return, ensuring precise positioning and reliable emergency closure. The included manual override (5 mm hex / 3/16" Allen) allows quick adjustments during setup or maintenance.

Key Features

• Wide Voltage Range: AC 24…240 V / DC 24…125 V

• High Torque Performance: 180 in-lb (20 Nm) for demanding damper applications

• On/Off Control with Spring Return: Ensures safe and reliable operation during power loss

• NEMA 4X / UL Type 4X Enclosure: Corrosion-resistant, weatherproof protection for harsh environments

• Two SPDT Auxiliary Switches: Supports additional control and feedback options

• Selectable Motor Rotation: CW/CCW direction via adjustable mounting

• Fast Fail-Safe Action: <20-second return time

• Wide Temperature Range: Operates reliably from -22°F to 122°F (-30°C to 50°C)

• Manual Override Included: 5 mm hex (3/16" Allen) crank for easy field adjustments

Ideal Applications

• Commercial HVAC systems

• Outdoor and corrosive environments

• Ventilation and air handling units

• On/off damper control with safety return requirements

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