Description
Discover the advanced Belimo NM24A-SR-F modulating damper actuator, designed for precision control in technical building installations. This actuator is ideal for air dampers up to approximately 2 m² and ensures optimal performance and reliability.
The Belimo NM24A-SR-F modulating damper actuator is engineered to adjust dampers seamlessly, ensuring efficient ventilation and air control. Its robust design and high functionality make it suitable for various applications in heating, ventilation, and air-conditioning systems.
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: 0.4 W
- Power consumption for wire sizing: 4 VA
- Connection supply/control: Cable 1 m, 4x 0.75 mm²
- Parallel operation: Yes (note the performance data)
Functional Data
- Torque motor: 10 Nm
- Operating range Y: 2...10 V
- Input impedance: 100 kΩ
- Position feedback U: 2...10 V
- Position feedback U note: Max. 1 mA
- Position accuracy: ±5%
- Direction of motion motor: Selectable with switch 0/1
- Direction of motion note: Y = 0 V: At switch position 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: 35 dB(A)
- Mechanical interface: Form fit 8x8 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
Additional Certifications
UL Approval: cULus according to UL60730-1A, UL60730-2-14 and CAN/CSA E60730-1
Hygiene test: According to VDI 6022 Part 1 / SWKI VA 104-01, cleanable and disinfectable, low-emission
Environmental and Physical Data
- Type of action: Type 1
- Rated impulse voltage supply/control: 0.8 kV
- Pollution degree: 3
- 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: 0.67 kg
Operating mode: The actuator is connected with a standard control signal of 0...10 V and drives to the position defined by the control signal. Measuring voltage U serves for the electrical display of the damper position 0...100% and as a control signal for other actuators.
Simple direct mounting: Easy direct mounting on the damper shaft with a form-fit hollow shaft. Supplied with two fastening clips for screw fitting.
Manual override: Manual override with push-button is possible (the gear train is disengaged as long as the button is pressed or remains locked).
Adjustable angle of rotation: Adjustable 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:
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Auxiliary switch 1x SPDT add-on S1A
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Auxiliary switch 2x SPDT add-on S2A
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Feedback potentiometer 140 Ω add-on P140A
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Feedback potentiometer 1 kΩ add-on P1000A
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Feedback potentiometer 10 kΩ add-on P10000A
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Signal converter voltage/current 100 kΩ 4...20 mA, Supply AC/DC 24 V Z-UIC
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Positioner for wall mounting SGA24
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Positioner for built-in mounting SGE24
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Positioner for front-panel mounting SGF24
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Positioner for wall mounting CRP24-B1
Mechanical accessories:
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Actuator arm for standard shaft clamp (one-sided) AH-25
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Shaft extension 240 mm ø20 mm for damper shaft ø8...22.7 mm AV8-25
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Form fit insert 8x8 mm, Multipack 20 pcs. ZF8-NMA
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Form fit insert 10x10 mm, Multipack 20 pcs. ZF10-NSA
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Form fit insert 12x12 mm, Multipack 20 pcs. ZF12-NSA
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Form fit insert 15x15 mm, Multipack 20 pcs. ZF15-NSA
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Form fit insert 16x16 mm, Multipack 20 pcs. ZF16-NSA
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Mounting kit for linkage operation for flat installation ZG-NMA
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.
