The Belimo SM24A Damper Actuator is a robust and reliable actuator designed for adjusting dampers in technical building installations. Ideal for air dampers up to approximately 4 m², this actuator offers precise control, efficient performance, and long-lasting durability. Perfect for HVAC systems, it ensures optimal airflow management in commercial and industrial environments. Click here for the technical data PDF Electrical Data Nominal Voltage: AC/DC 24 V Nominal Voltage Frequency: 50/60 Hz Nominal Voltage Range: AC 19.2...28.8 V / DC 19.2...28.8 V Power Consumption in Operation: 2 W Power Consumption in Rest Position: 0.2 W Power Consumption for Wire Sizing: 4 VA Connection Supply / Control: Cable 1 m, 3x 0.75 mm² Parallel Operation: Yes (note the performance data) Functional Data Torque Motor: 20 Nm Direction of Motion Motor: Selectable with switch 0 (ccw rotation) / 1 (cw rotation) Manual Override: With push-button, can be locked Angle of Rotation: Max. 95° Angle of Rotation Note: Can be limited on both sides with adjustable mechanical end stops Running Time Motor: 150 s / 90° Sound Power Level: 45 dB(A) Mechanical Interface: Universal shaft clamp reversible 10...20 mm Position Indication: Mechanical, pluggable Safety Data Protection Class IEC/EN: III, Safety Extra-Low Voltage (SELV) Power Source UL: Class 2 Supply Degree of Protection IEC/EN: IP54 Degree of Protection NEMA/UL: NEMA 2 Enclosure UL: Enclosure Type 2 EMC: CE according to 2014/30/EU Certification IEC/EN: IEC/EN 60730-1 and IEC/EN 60730-2-14 UL Approval: cULus according to UL60730-1A, UL60730-2-14 Hygiene Test: According to VDI 6022 Part 1 / SWKI VA 104-01, cleanable and disinfectable, low-emission Type of Action: Type 1 Rated Impulse Voltage Supply / Control: 0.8 kV Pollution Degree: 3 Environmental Conditions Ambient Humidity: Max. 95% RH, non-condensing Ambient Temperature: -30...50°C [-22...122°F] Storage Temperature: -40...80°C [-40...176°F] Servicing: Maintenance-free Weight: 0.94 kg Simple Direct Mounting: Direct mounting on the damper shaft with a universal shaft clamp, supplied with an anti-rotation device to prevent the actuator from rotating. Manual Override: Manual override with push-button possible (the gear train is disengaged for as long as the button is pressed or remains locked). Adjustable Angle of Rotation: Adjustable angle of rotation with mechanical end stops. High Functional Reliability: The actuator is overload protected, requires no limit switches, and automatically stops when the end stop is reached. Electrical Accessories: Auxiliary switch 1x SPDT add-on S1A Auxiliary switch 2x SPDT add-on S2A Feedback potentiometer 140 Ω add-on P140A Feedback potentiometer 1 kΩ add-on P1000A Feedback potentiometer 10 kΩ add-on P10000A Mechanical Accessories: Actuator arm for standard shaft clamp (reversible) AH-20 Shaft extension 240 mm ø20 mm for damper shaft ø12...21 mm CrNi AV12-25-I Shaft extension 240 mm ø20 mm for damper shaft ø8...22.7 mm AV8-25 Ball joint suitable for damper crank arm KH8 KG8 Ball joint suitable for damper crank arm KH8 / KH10 KG10A Damper crank arm Slot width 8.2 mm, clamping range ø10...18 mm KH8 Shaft clamp one-sided, clamping range ø8...26 mm, Multipack 20 pcs. K-ENSA Shaft clamp one-sided, clamping range ø12...26 mm, for CrNi shaft (INOX), Multipack 20 pcs. K-ENSA-I Shaft clamp reversible, clamping range ø10...20 mm K-SA Anti-rotation mechanism 180 mm, Multipack 20 pcs. Z-ARS180 Anti-rotation mechanism 230 mm, Multipack 20 pcs. Z-ARS230 Form fit insert 10x10 mm, Multipack 20 pcs. ZF10-NSA Form fit insert 12x12 mm, Multipack 20 pcs. ZF12-NSA Form fit insert 15x15 mm, Multipack 20 pcs. ZF15-NSA Form fit insert 16x16 mm, Multipack 20 pcs. ZF16-NSA Mounting kit for linkage operation for flat installation ZG-SMA Position indicator, Multipack 20 pcs. Z-PI Baseplate extension for SM..A to SM../AM../SMD24R Z-SMA For more information and to explore our range of Belimo products, visit our website at https://ecospares.co.uk/collections/belimo. If you need any assistance, please contact us.
