SQM50.460R1H3 Siemens Damper Motor

Overview

The Siemens SQM50.460R1H3 is a high-precision reversing rotary actuator designed for the accurate positioning of air dampers, flow control valves, and butterfly valves in industrial and commercial burner applications. This electromotive actuator is engineered for stability and repeatability, making it an essential component for modulating control systems. It features a robust housing and is designed to interface with various electronic modules and circuit boards, allowing for flexible integration into complex HVAC and combustion control environments.

Features

• Equipped with six internal, easily adjustable SPDT switches, including two limit switches and four auxiliary switches for complex control sequences
• Integrated auto/manual selector switch and manual forward/reverse toggle for easy onsite setup and troubleshooting
• Low-hysteresis drive system with a double-offset gear train and potentiometer gearing for superior modulating accuracy
• Externally visible position indicator provides clear status monitoring of the shaft’s orientation
• Field-exchangeable circuit boards and potentiometers allow for various input/output signal configurations and maintenance
• Durable construction utilizing aluminum and steel components for long service life in demanding industrial environments

Specifications

• Model: SQM50.460R1H3
• Operating Voltage: 110-120 Vac (50/60 Hz)
• Torque Output: 140 in-lbs (16 Nm)
• Runtime: 25 seconds for 90-degree rotation (at 60 Hz)
• Control Input: 0 to 135 Ohm (H-type circuit board)
• Rotation Direction: Counter-clockwise (CCW) default
• Shaft Type: No shaft included (must be ordered separately)
• Power Consumption: 20 VA
• Protection Rating: UL recognized and CSA certified
• Temperature Range: -5 F to 140 F (-20 C to +60 C)

Applications

• Positioning of air and gas dampers in industrial and commercial burner systems
• Control of fuel flow through modulating butterfly valves and flow control valves
• Integration into multi-stage or modulating HVAC systems requiring high torque and precise feedback
• Replacement for competitive rotary actuators in existing boiler and furnace installations
• Use in applications requiring master/slave or parallel actuator operation for synchronized control