Honeywell MS3103K1050/B 27 lb-in Spring Return HVAC Damper Actuator 24V Sylk Enabled NEMA2

The Honeywell MS3103K1050/B is a spring return direct coupled actuator designed for heating, ventilating, and air-conditioning (HVAC) systems. This 27 lb-in (3 Nm) torque actuator operates on 24 VAC and features Sylk-enabled communication for advanced building automation integration.

Key Features:

• 27 lb-in (3 Nm) running torque with 70 lb-in maximum stall torque
• 24 VAC power supply, 50/60 Hz, Class 2 transformer compatible
• Sylk Bus communicating capability for building management systems
• Spring return fail-safe operation for safety-critical applications
• NEMA 2 enclosure rating for indoor use
• Self-centering shaft adapter accommodates various shaft sizes
• Brushless DC motor with electronic stall protection
• 95-degree stroke, mechanically limited
• Low power consumption: 4-6 VA driving, 2 VA holding
• Compact design: 177mm H x 98mm W x 80mm D

Applications:

• Volume control dampers for HVAC systems
• Quarter-turn rotary valves (ball or butterfly valves)
• Rooftop units and economizers
• Compact control dampers requiring spring return fail-safe operation

This actuator is specially designed for Carrier applications and comes in bulk packaging. It includes a mounting bracket and self-centering shaft adapter for easy installation. The unit operates reliably in temperatures from -40°F to 150°F and features plenum-rated plastic housing. UL 873 and cUL listed.