Honeywell MS4104F1010
Honeywell MS4104F1010
Out of stock; call for lead time
The Honeywell MS4104F1010 is a fast-acting, two-position, spring-return direct-coupled actuator built for fire and smoke damper on/off control. Powered from a 120 VAC on/off signal, it drives the damper open and uses an internal spring to snap it closed within 15 seconds on loss of signal or power, and its reversible mounting lets it run in either clockwise or counterclockwise rotation.
Key Features
- Fast-acting, two-position spring return operation
- Direct-coupled actuator (DCA) design, no external linkage required
- Reversible mounting for CW or CCW spring rotation
- 15-second spring return timing on power loss
- Accepts a simple SPST on/off control signal
Technical Specifications
- Voltage: 120 VAC
- Torque: 30 lb-in (3.4 N·m) minimum driving torque
- Weight: 5 lb (2.3 kg)
- Dimensions: 8.9" H x 5.13" W x 3.32" D
- Minimum Damper Shaft Length: 2 in
Certifications
- UL555S rated for fire/smoke damper actuation up to 350°F (176°C)

