SQM50.360R1G3 Siemens Damper Motor

Overview

The Siemens SQM50.360R1G3 is a high-precision reversing actuator designed for the accurate positioning of air and gas dampers, flow control valves, and butterfly valves in medium to large capacity oil and gas burners. Engineered for industrial applications requiring exceptional repeatability and modulating accuracy, this electromotive actuator features a modular design with exchangeable circuit boards and adjustable auxiliary switches. The “R1” designation indicates UL recognition and CSA certification, while the “G3” internal circuit board provides a 4-20 mA input signal for precise control.

Features

• Reversing motor with field-reversible clockwise or counter-clockwise operation
• Six easily accessible internal switches, including two limit and four auxiliary switches
• Integrated auto/manual selector switch for easy adjustments and commissioning
• Externally visible shaft position indicator for quick status monitoring
• Low hysteresis gearing with independent disengagement clutches for the drive shaft and cam drum
• Modular design allows for field-exchangeable circuit boards and potentiometers
• Durable die-cast aluminum housing with impact-proof and heat-resistant plastic covers

Specifications

• Model: SQM50.360R1G3
• Operating Voltage: 110-120 Vac (50/60 Hz)
• Torque: 140 in-lb (16 Nm)
• Running Time: 12 seconds for 90 degree rotation at 60 Hz (15 seconds at 50 Hz)
• Control Input: 4-20 mA
• Potentiometer: 1000 Ohm, 90 degree range
• Shaft Type: Base model (no shaft included; requires AGA58 series shaft)
• Protection Rating: IP54 (NEMA 1, 2, 3, 3R, 4 and 12 with appropriate conduit)
• Operating Temperature: -4 F to +140 F (-20 C to +60 C)

Applications

• Load-dependent control of combustion air volume in industrial burners
• Precise regulation of gas flow and oil volume in large scale heating systems
• Positioning of flow control valves and butterfly valves in HVAC systems
• Replacement for competitive actuators in commercial boiler plants
• Integration into OEM burner management systems such as the Siemens LMV5 series