Siemens Combustion SQM40.255R11 Actuator

ACTUATOR, CCW 4/20ma 135ohm

Siemens SQM40.255R11 Combustion Actuator – 4-20 mA, 135 Ohm, CCW

Ensure precise control of combustion systems with the Siemens SQM40.255R11 Actuator, engineered for demanding industrial burner and thermal process applications. This high-performance rotary actuator delivers reliable counter-clockwise (CCW) operation, 4-20 mA control input, and a Form-C auxiliary switch for dependable feedback.

Key Specifications

• Model: SQM40.255R11

• Control Signal: 4-20 mA, 135 Ohm

• Voltage: 110 V AC

• Torque: 90 in-lb

• Rotation: 90° in 25 seconds

• Drive Shaft: 10 mm “D” shaft

• Rotation Direction: Counter-Clockwise (CCW)

• Auxiliary Switch: Form-C

Product Overview
The Siemens SQM40/SQM41 series actuators are designed to drive oil pressure controllers, butterfly valves, dampers, and other equipment requiring accurate rotary motion. They are ideal for medium- to high-capacity oil and gas burners and thermal process plants, providing load-dependent control of gas, oil, and combustion air flow.

Applications

• Industrial and commercial oil & gas burners

• Combustion air and fuel flow control

• Thermal process plants requiring precise modulating or 3-position control

• Compatible with modulating controllers (4-20 mA) or direct control from burner management systems

Benefits

• Precise Modulation: Accurate positioning for optimal combustion efficiency.

• Durable Design: Built to withstand demanding industrial environments.

• Flexible Integration: Works with 3-position or modulating control systems for a variety of burner applications.

Choose the Siemens SQM40.255R11 actuator for dependable, high-torque performance and long service life in critical combustion control systems.

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