BELIMO NM24A-SR
A reliable and efficient actuator designed for HVAC systems. It offers precise control over air and fluid flow, ensuring optimal energy savings and improved system performance in industrial environments.
Key Features
- Modulating damper actuator, 24 V AC/DC
- 10 Nm torque for smooth damper control
- Supports dampers up to ~2 m² area
- 2–10 V control + 2–10 V position feedback
- Universal shaft clamp (8–26.7 mm)
- Maintenance‑free operation, IP54 protection
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Description
The Belimo NM24A‑SR is designed to provide precise, efficient control of air dampers in HVAC, ventilation, and air‑handling systems — perfect for buildings, offices, hotels, or industrial plants. Using a 2–10 V modulating control signal, it adjusts damper position smoothly (rather than just ON/OFF), enabling fine‑tuned airflow and optimal indoor comfort. The built‑in position feedback (2–10 V) allows BMS or control systems to monitor damper status in real time, ensuring accurate automation and system diagnostics.
With a torque of 10 Nm and compatibility with dampers up to 2 m², NM24A‑SR handles large dampers with ease, making it suitable for ventilation shafts, fresh‑air intake vents, exhaust dampers, or zone‑based airflow control. The universal shaft clamp (8–26.7 mm) supports round or square shafts, simplifying installation across different damper types. Manual override is possible via a push‑button (gear train disengaged), allowing maintenance or emergency adjustment without power.
Because of its low power consumption (2 W running, 0.4 W holding), modest sound level (~35 dB), and robust IP54‑rated housing, this actuator remains reliable even in dusty or humid environments. Compared to basic on/off actuators or manual dampers, the Belimo NM24A‑SR delivers smoother airflow modulation, better energy efficiency, less noise, and longer lifetime — making it a superior choice for professional HVAC and building‑automation systems.
Specifications
- Model: NM24A‑SR (modulating damper actuator) Belimo+1
- Supply voltage: 24 V AC/DC (AC 19.2–28.8 V / DC 19.2–28.8 V) Belimo+1
- Control signal: 2–10 V DC modulating Belimo+1
- Position feedback: 2–10 V DC output (max. 1 mA) Belimo+1
- Motor torque: 10 Nm Belimo+1
- Max damper size: approx. 2 m² Belimo+1
- Shaft compatibility: 8–26.7 mm universal shaft clamp (round or square) RS Components+1
- Angle of rotation: max. 95°, adjustable via mechanical end stops Belimo+1
- Running time: 150 s for 90° stroke Belimo+1
- Power consumption: 2 W during operation, 0.4 W at rest; 4 VA for wire sizing Belimo+1
- Protection class: IP54 (suitable for dusty or humid environments) Belimo+1
- Ambient operating temperature: –30 °C to +50 °C Belimo+1
- Noise level: ~35 dB(A) during operation Belimo+1
- Manual override: push‑button gear disengage, allows manual damper adjustment Controls Traders+1
- Maintenance: maintenance‑free design Belimo+1
The Bangladesh selling price for Belimo NM24A‑SR depends on shipping charges, import duties, and local distributor stock. Please contact your local HVAC‑equipment supplier or submit an inquiry through our website to receive a tailored quotation including delivery cost and availability. We update pricing periodically to reflect current freight and customs changes.
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