Siemens Combustion SQM40.215R11 Actuator

The Siemens SQM40.215R11 Actuator is a heavy-duty electromotoric component designed for the precise positioning of air and gas dampers or butterfly valves in industrial burner systems. Operating on a 110V-120V AC power supply, this model features a 0-135 Ohm resistive input signal, providing reliable modulating control for high-turndown burner applications. Built with a robust NEMA 4 (IP66 equivalent) aluminum housing, it is engineered to withstand harsh environments without the need for additional weather shielding. The unit delivers a mechanical torque of 90 in-lb (10 Nm) with a 25-second running time for a 90-degree stroke at 60Hz. It utilizes a 10mm D-shaft and provides counter-clockwise (CCW) rotation. Technicians will appreciate the internal position indicator, three adjustable auxiliary switches, and the drive shaft disengagement clutch that facilitates rapid manual alignment during commissioning. This industrial combustion actuator ensures stable process regulation in thermal plants and large-scale HVACR configurations.

• Environmental Resilience: The NEMA 4 enclosure permits mounting in any orientation, offering protection against moisture and debris in demanding boiler rooms.
• Versatile Control: Integrated electronics support 0-135 Ohm, 4-20 mA, and 2-10 VDC signals for seamless integration with modulating controllers.
• Precise Calibration: Features internal zero and span adjustment for exact stroke calibration and synchronous motor timing for consistent operation.
• Safety Compliance: This "R" suffix model is UL and CSA listed, including the necessary connection facilities for flexible conduit required in North American installations.

What is the shaft rotation for the SQM40.215R11?
This specific model is a counter-clockwise (CCW) rotation actuator. For clockwise applications, the SQM41 series is typically required.

Can the auxiliary switches be adjusted in the field?
Yes, the actuator includes internally adjustable cam switches with a position scale, allowing technicians to set specific switching points for low-fire or ignition positions.

Is this actuator suitable for marine environments?
Yes, the SQM40 series is rated for environmental category A, making it compatible with various marine and offshore burner applications.

This item is not eligible for free shipping.

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.