SIEMENS Actuator SAS61.03

Core Features "SAS61" Series & Functional Design: The "SAS61" denotes Siemens’ reliable medium-duty electric rotary actuator series, tailored for mid-sized damper airflow control. The "03" model is a 24V AC-powered rotary actuator with a 90° rotation angle (standard for commercial dampers) and a torque rating of 3 Nm—ideal for medium-sized air dampers in commercial HVAC systems (e.g., VAV boxes, small AHUs) or light industrial ductwork, where balanced torque and compactness are prioritized. Flexible Control Modes & Feedback: Equipped with dual control options to match diverse airflow needs: Modulating control (0–10V DC input): For variable air volume (VAV) systems or precision ventilation, enabling damper opening adjustment with ±2% positioning accuracy—critical for stable temperature control in office buildings or retail spaces. On/off control (24V AC input): For simple full-open/full-close scenarios (e.g., zone isolation dampers), ensuring rapid response to basic airflow demands. It includes built-in analog position feedback (0–10V DC) for real-time status monitoring, compatible with building management systems (BMS) for centralized control and fault diagnosis. Compact & Durable Construction: Engineered with a corrosion-resistant aluminum alloy housing and a weight of 0.95 kg (2.09 lbs), suitable for wall, bracket, or direct damper mounting in tight spaces (e.g., HVAC control cabinets, duct enclosures). The housing features IP54 protection (dust-tight, water-resistant), withstanding commercial mechanical room dust, moisture, and mild vibration—ideal for indoor commercial and light industrial environments. Safety & Reliability Features: Built with safeguards to ensure long-term operation: Electronic overtorque protection: Automatically stops the motor if torque exceeds 3 Nm (e.g., jammed damper from debris), avoiding mechanical damage to the actuator or damper. Dual end-stop limits: Mechanical and electronic limits prevent over-rotation beyond 0° (closed) and 90° (open), protecting damper seals and extending component lifespan. Wide voltage tolerance: Accepts 24V AC (50/60 Hz) input with ±15% fluctuation tolerance, ensuring stability in standard HVAC control system power supplies. Easy Integration & Installation: Designed for seamless compatibility with Siemens BMS controllers (e.g., Desigo PX) and third-party PLCs via standard 0–10V analog signals. It includes a universal damper shaft adapter (fits 6–10 mm diameter shafts) and pre-labeled wiring terminals, reducing installation time by up to 20% vs. non-standard actuators. No specialized tools are required for setup. Typical Applications SIEMENS Actuator SAS61.03 is engineered for medium-duty rotary control of mid-sized dampers—ideal for scenarios needing 3 Nm torque, precision positioning, and commercial-grade durability in HVAC or light industrial ventilation. Key use cases include: Commercial VAV Boxes: Controlling dampers in variable air volume (VAV) boxes for office buildings, hotels, or retail stores. Modulating control adjusts airflow to match room temperature demand, while IP54 protection withstands mechanical room conditions—complying with EN 13141-6 (ventilation for non-residential buildings) and ASHRAE 90.1 (energy efficiency). Small Air Handling Units (AHUs): Regulating supply/return air dampers in small commercial AHUs (e.g., restaurant kitchens, small office buildings). On/off control manages AHU startup/shutdown, and position feedback enables BMS monitoring of damper status—complying with EN 1886 (air handling units) and ISO 16813 (HVAC system design). Light Industrial Ventilation: Adjusting dampers in small factory ductwork (e.g., electronics assembly, food packaging). Electronic overtorque protection handles occasional debris jams, and compact design fits tight duct enclosures—complying with ISO 12591 (industrial ventilation standards). Commercial Smoke Control: Controlling dampers in commercial building smoke management systems (e.g., small malls, office lobbies). On/off control enables emergency closure to contain smoke, and IP54 protection suits public building mechanical spaces—complying with EN 12101-6 (smoke control dampers) and local fire codes.