Description
The Siemens SQN30.121A3500 Damper Actuator is a high-performance actuator designed for precise positioning of air dampers and fuel valves in industrial and commercial burner systems. Engineered for rapid response, it completes a 90° rotation in just 4.5 seconds, enabling accurate combustion control and improved burner efficiency.
This actuator delivers a rated torque of 1.5 Nm with a holding torque of 0.8 Nm, ensuring stable positioning under load. It features counterclockwise rotation, making it suitable for specific burner configurations and control requirements.
Equipped with two integrated relays and one auxiliary switch, the SQN30.121A3500 provides enhanced control logic, feedback capability, and system integration. Operating on AC 230 V, it is ideal for use with compatible burner control units in boilers, furnaces, and heating equipment.
Its robust design and reliable performance make it a trusted solution for maintaining safe, efficient, and automated combustion processes.
Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Siemens |
| Part Number | SQN30.121A3500 |
| Product Type | Damper Actuator (Burner Control) |
| Rotation Angle | 90° |
| Rotation Time | 4.5 seconds |
| Rated Torque | 1.5 Nm |
| Holding Torque | 0.8 Nm |
| Rotation Direction | Counterclockwise |
| Relays | 2 |
| Auxiliary Switch | 1 |
| Operating Voltage | AC 230 V |
| Application | Air Dampers & Fuel Valves in Burner Systems |







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