Siemens Combustion SQM50.480R1Z3 Motor

The Siemens SQM50.480R1Z3 is a high-torque reversing actuator engineered for the precise positioning of air and fuel dampers, butterfly valves, and flow control valves in industrial burner systems. Operating on 120V AC, this electromotive actuator delivers a robust 140 lb-in torque capacity with a 25-second stroke time (at 60 Hz) for 90° of rotation. As a veteran-grade component for combustion management, it features 8 internal switches, including two end-limit switches and six adjustable auxiliary switches, providing extensive feedback and sequencing options for complex burner control logic. This unit is the "No Shaft" configuration, allowing technicians to field-install specific drive shafts (such as the AGA58 series) to match existing linkage requirements. Its durable die-cast aluminum housing and IP54-rated protection ensure reliable modulating accuracy of 0.3° even in demanding boiler room environments.

• High-Torque Modulation: Delivers 140 lb-in of torque, providing the mechanical force necessary for large-scale air dampers and gas valves.
• Extensive Control Feedback: Integrated with 8 auxiliary switches (2 limit, 6 auxiliary) for precise high-fire, low-fire, and ignition position signaling.
• Standardized Timing: Features a consistent 25-second 90-degree stroke for predictable burner sequencing and thermal load response.
• Flexible Installation: Supplied without a shaft to allow for custom AGA58 drive shaft integration and compatibility with various mounting brackets.
• Industrial Durability: Housed in rugged aluminum, designed to maintain repeatable positioning throughout 250,000 startup cycles.

Common Questions

Does this motor include the drive shaft?
No, the SQM50.480R1Z3 is a "no shaft" model. You must select and install a compatible single-ended or dual-ended Siemens drive shaft separately based on your specific linkage assembly.

Can I adjust the rotational direction in the field?
Yes. While factory-set for counterclockwise rotation, this SQM50 series actuator features a reversible motor that can be configured for clockwise or counterclockwise operation during commissioning.

What control signals does this actuator support?
This model is designed for modulating control and typically supports analog inputs like 4-20 mA, 0-10 VDC, or 0-135 Ohm when equipped with the appropriate electronic boards.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.