SQM20.16502 Siemens Actuator

Overview

The Siemens SQM20.16502 is a heavy-duty, reversible electromotoric actuator designed for the precise control of air dampers and control valves in oil and gas burners. Engineered for industrial and commercial burner applications, this actuator is a critical component for optimizing combustion efficiency and ensuring safety. It features a robust design with a die-cast aluminum housing and a synchronous motor that provides reliable, maintenance-free operation.

Features

• Reversible synchronous motor that is locking-proof
• Heavy-duty construction with a 12mm diameter drive shaft and gear train shafts made of hardened steel
• Integrated cam stack with adjustable cams for precise setting of switching points
• Five auxiliary switches for versatile control and feedback options
• Impact-proof and heat-resistant plastic cover in dark grey
• Maintenance-free reduction gearing with self-lubricating sinter-bronze bearings
• Internal scale for easy adjustment of cam positions

Specifications

• Model: SQM20.16502
• Operating Voltage: AC 220 V to 240 V (50/60 Hz)
• Power Consumption: 9 VA
• Nominal Torque: 20 Nm
• Starting Torque: 20 Nm
• Holding Torque: 12 Nm
• Running Time: 29 seconds for 90 degrees (at 50 Hz)
• Direction of Rotation: Counterclockwise (facing the drive shaft)
• Number of Auxiliary Switches: 5
• Protection Rating: IP54
• Operating Temperature: -20 C to +60 C
• Weight: Approximately 1.7 kg

Applications

• Control of air dampers in industrial and commercial oil and gas burners
• Regulation of fuel flow via control valves
• Use in connection with burner controls and switching devices equipped with changeover contacts
• Integration into HVAC and boiler systems for process air and heat management