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Siemens SQS65 Actuator - Spring Return Damper Control

Siemens SQS65 Actuator for spring-return damper control.

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ManufacturerSiemens

Part numberSQS65

Voltage 24V AC

Frequency 50/60 Hz

Torque 2 Nm

Type Electromechanical Actuator

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Electromechanical Actuator Spring Return Function 24V AC Operation 2 Nm Torque Damper Control Fail-Safe Operation

Product description

The Siemens SQS65 is an electromechanical actuator designed for spring-return operation of air dampers in HVAC and building automation systems. It operates on a 24V AC power supply and provides 2 Nm of torque, with a spring return function that ensures the damper moves to a safe position upon power loss. This model is ideal for applications where fail-safe damper operation is critical.

This actuator is commonly used in air handling units, ventilation systems, and fire/smoke damper applications. Its spring-return feature makes it suitable for critical safety functions in buildings, ensuring airflow control is maintained even during power outages.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens SQS65. We are committed to providing reliable surplus industrial automation components to help keep your systems running efficiently and safely.

Technical specifications

Voltage	24V AC
Frequency	50/60 Hz
Torque	2 Nm
Type	Electromechanical Actuator
Function	Spring Return Damper Control
Rotation Angle	90° (typical)

Common applications

HVAC Systems

Air Handling Units

Building Automation

Fire and Smoke Dampers

Ventilation Control

Fail-Safe Damper Operation

Compatible systems

Building Automation Systems HVAC Control Panels Fire and Smoke Damper Systems

Also known as

Siemens Spring Return Actuator SQS65 Series Actuator 24V AC Damper Actuator Siemens HVAC Actuator

Replaces / compatible with

Suitable for replacement of Siemens SQS actuators in spring-return damper applications. Verify voltage and torque requirements for compatibility.

Technical note

Expert tip

This actuator requires a momentary signal or loss of continuous power to engage its spring-return function, ensuring fail-safe operation.

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Frequently asked questions

What is the primary benefit of the spring-return function on the Siemens SQS65 actuator?

The primary benefit of the spring-return function on the Siemens SQS65 actuator is its fail-safe operation. In the event of a power failure, the actuator uses a spring mechanism to automatically move the damper to a predetermined safe position, crucial for safety systems like fire and smoke dampers.