SQM50.380A1 Siemens Damper Motor

Overview

The Siemens SQM50.380A1 is a high-precision reversing actuator designed for the accurate positioning of air dampers and gas valves in medium to large capacity oil and gas burners. Engineered for industrial and commercial burner applications, this electromotive actuator provides reliable load-dependent control of combustion air and fuel. It is specifically designed to integrate with burner controls and can be equipped with various electronic modules to support a wide range of control signals, ensuring optimal combustion efficiency and safety.

Features

• Reversing motor with clockwise and counterclockwise variants available
• Internal and external position indication for easy monitoring
• Separately disengageable drive shaft and camshaft for manual adjustments
• Low hysteresis gearing with double-offset drive and potentiometer gearing for superior accuracy
• Supports up to six internal, easily adjustable auxiliary switches
• Durable housing with die-cast aluminum sections and impact-resistant plastic covers
• Maintenance-free gear train with automatic re-engagement

Specifications

• Model: SQM50.380A1
• Torque: 140 in-lbs (15 Nm)
• Running Time: 12 seconds (at 60 Hz)
• Voltage: 110 V AC / 120 V AC
• Number of Switches: 8 (Two limit, six auxiliary)
• Shaft Design: No shaft included (interchangeable shafts available separately)
• Protection Rating: IP54 (NEMA 3)
• Approvals: UL, CSA, CE, and EAC certified

Applications

• Positioning of air and gas dampers in industrial and commercial burners
• Load-dependent control of gas, oil, and combustion air flows
• Modulation of butterfly valves and flow control valves
• Use in HVAC systems for precise air quality and temperature regulation
• Integration with Siemens burner controls or 3-position modulating controllers (e.g., 4-20 mA)