SQM50.461R1K3 Siemens Damper Motor

Overview

The Siemens SQM50.461R1K3 is a high-precision reversing actuator designed for the accurate positioning of air and gas dampers, flow control valves, and butterfly valves. Part of the SQM5 series, this electromotive actuator is engineered for modulating duty and is particularly suited for industrial and commercial burner applications that require a high degree of repeatability and accuracy. Its robust design features a self-locking gear train and a modular internal structure that allows for significant field customization and flexibility in mounting.

Features

• High accuracy and rotational resolution with low hysteresis for precise modulating control
• Integrated auto/manual selector switch and manual forward/reverse toggle for easy adjustment and commissioning
• Externally visible shaft position indicator for quick status checks at the burner
• Internal drive shaft and cam drum disengagement clutches for fast manual alignment
• Equipped with two limit switches and up to four adjustable auxiliary switches for flexible sequence control
• Field-exchangeable circuit boards and potentiometers to adapt to various control signals and feedback requirements
• Durable construction with a design life of approximately 250,000 burner startup cycles

Specifications

• Model: SQM50.461R1K3
• Operating Voltage: 110-120 Vac (50/60 Hz)
• Torque: 140 in-lb (approximately 15 Nm)
• Running Time: 25 seconds for 90 degree rotation (at 60 Hz)
• Control Input: 0 to 10 Vdc (via AGA56.43A… circuit board)
• Rotation Direction: Counter-clockwise (CCW) facing the gear end
• Drive Shaft: 10 mm round shaft, single ended
• Protection Rating: NEMA 1, 2, 3, 3R, 3S, 5, 12, 13 (IP54)
• Operating Temperature: -15 C to +60 C (5 F to 140 F)

Applications

• Positioning of air and gas dampers in industrial process heating and commercial boiler systems
• Controlling air/fuel ratio management when used with Siemens or third-party burner controls
• Operation of flow control valves and butterfly valves for precise fluid regulation
• Suitable for dual-fuel applications where auxiliary switches define specific ignition and fire positions
• Applicable in any system requiring reliable, high-torque rotary motion with electronic position feedback