Honeywell MS4103F1225 Direct Coupled Spring Return Damper Actuator 3Nm 120-230V

Description

Honeywell MS4103F1225 Direct Coupled Spring Return Damper Actuator

The Honeywell MS4103F1225 is a Direct Coupled Actuator (DCA) designed for reliable, precise damper control in commercial and residential HVAC systems. Featuring spring return (S/R) operation, this actuator automatically returns the damper to its fail-safe position upon power loss, ensuring system safety and consistent performance. The U-bolt clamp (CL) mounting design simplifies installation directly onto damper shafts without the need for additional linkage hardware.

Key Features

• Direct Coupled Actuator (DCA) for straightforward shaft mounting
• Spring Return (S/R) fail-safe operation — returns to default position on power loss
• 3 Nm rated torque output for dependable damper positioning
• Wide voltage compatibility: 120–230V AC for flexible application use
• U-bolt clamp (CL) mounting for fast, tool-friendly installation
• Compact, robust housing suited for commercial HVAC environments
• Designed for use with air handling units, VAV systems, and ventilation dampers

Specifications

• Brand: Honeywell
• SKU / Part Number: MS4103F1225
• Actuator Type: Direct Coupled Actuator (DCA)
• Operation: Spring Return (S/R)
• Torque: 3 Nm
• Supply Voltage: 120–230V AC
• Mounting: U-Bolt Clamp (CL)

Applications

The MS4103F1225 is ideal for controlling dampers in air handling units, ventilation systems, VAV boxes, and other HVAC applications where reliable fail-safe positioning and wide voltage compatibility are required. Its spring return mechanism makes it well-suited for fresh air, exhaust, and mixed-air damper control in both new construction and retrofit projects.