Description
The Belimo NM24A-S is a robust and efficient damper actuator designed for adjusting dampers in technical building installations. Perfect for air damper sizes up to approximately 2 m², this actuator ensures precise control and high functional reliability.
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: 1.5 W
- Power Consumption in Rest Position: 0.2 W
- Power Consumption for Wire Sizing: 3.5 VA
- Auxiliary Switch: 1x SPDT, 0...100%
- Switching Capacity Auxiliary Switch: 1 mA...3 A (0.5 A inductive), DC 5 V...AC 250 V
- Connection Supply / Control: Cable 1 m, 3x 0.75 mm²
- Connection Auxiliary Switch: Cable 1 m, 3x 0.75 mm²
- Parallel Operation: Yes (note the performance data)
Functional Data
- Torque Motor: 10 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, Motor: 35 dB(A)
- Mechanical Interface: Universal shaft clamp 8...26.7 mm
- Position Indication: Mechanical, pluggable
Safety Data
- Protection Class IEC/EN: III, Safety Extra-Low Voltage (SELV)
- Power Source UL: Class 2 Supply
- Protection Class Auxiliary Switch IEC/EN: II, reinforced insulation
- 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
- Low Voltage Directive: CE according to 2014/35/EU
- Certification IEC/EN: IEC/EN 60730-1 and IEC/EN 60730-2-14
- 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 Conditions
- Type of Action: Type 1.B
- Rated Impulse Voltage Supply / Control: 0.8 kV
- Rated Impulse Voltage Auxiliary Switch: 2.5 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: 0.80 kg
Why Choose the Belimo NM24A-S?
Simple Installation: Direct mounting on the damper shaft with a universal shaft clamp, includes an anti-rotation device to prevent the actuator from rotating.
High Reliability: The actuator is overload protected, requires no limit switches, and automatically stops when the end stop is reached, ensuring high functional reliability.
Manual Override: Equipped with a manual override push-button, allowing for manual adjustments when necessary.
Adjustable Angle of Rotation: The angle of rotation can be easily adjusted with mechanical end stops, providing flexibility in various applications.
Flexible Signaling: Comes with an adjustable auxiliary switch (0...100%) for versatile signalling options.
Accessories
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: AH-25
- Shaft Extension 240 mm: AV8-25
- Ball Joint Suitable for Damper Crank Arm: KH8 KG8
- Damper Crank Arm Slot Width 8.2 mm: KH8
- Shaft Clamp One-sided: K-ENMA
- Form Fit Insert: ZF8-NMA, ZF10-NSA, ZF12-NSA, ZF15-NSA, ZF16-NSA
- Mounting Kit for Linkage Operation: ZG-NMA
- Anti-Rotation Mechanism: Z-ARS180
- Baseplate Extension: Z-NMA
- Position Indicator: Z-PI
For more details and to purchase Belimo products, don't hesitate to contact the ECO SPARES team for assistance.
