SQM41.145R11SC Siemens Actuator

Overview

The Siemens SQM41.145R11SC is a high-precision, electromotoric modulating actuator designed for the accurate positioning of dampers and valves in burner and combustion applications. Engineered for clockwise rotation, this cost-effective “Synchro” series actuator provides reliable rotary motion for load-dependent control of gas, oil, and combustion air. It is specifically designed to integrate seamlessly with industrial and commercial burner controls, offering electronic self-supervision and versatile mounting options.

Features

• Flexible control options including 4 to 20 mA, 0 to 135 ohm, and 2 to 10 Vdc analog inputs
• Clockwise direction of rotation with a drive shaft that can be manually disengaged for easy alignment
• Integrated internal position indication and adjustable limit and auxiliary switches
• Durable construction with a die-cast aluminum lower housing and heat-resistant plastic cover
• NEMA 4 rated enclosure suitable for various mounting orientations without the need for weather shields
• UL and CSA approved for use in North American industrial environments

Specifications

• Model: SQM41.145R11SC
• Operating Voltage: AC 110 V (50/60 Hz)
• Torque: 45 in-lb (5 Nm)
• Running Time: 15 seconds for 90 degrees
• Rotation: Clockwise (CW)
• Shaft Type: 10mm D-shaft
• Enclosure Rating: NEMA 4 / IP65
• Designed Lifetime: 250,000 start cycles

Applications

• Load-dependent control of gas, oil, and combustion air in industrial burners
• Positioning of flow control valves, butterfly valves, and air dampers
• Use in thermal process plants of medium to high capacity
• Integration with Siemens burner controls such as the LME7 series or LMV5 systems
• Replacement for competitive actuators in HVAC and combustion systems using available mounting brackets