NF24G-MP-L Spring Return Actuator, 10 Nm, AC/DC 24 V, 20 S

On request
£339.33 £407.20

NF24G-MP-L Spring Return Actuator, 10 Nm, AC/DC 24 V, 20 S

  • 10 Nm, 150 s / 90°, 90°

  • AC/DC 24 V, Modulating, MP-Bus

  • IP 66, Manual Override with Integrated Position Stop

  • Spring Running Time <20 s / ccw

  • Operating Range DC 2...10 V, 0...32 V Adjustable

  • Position Feedback DC 2...10 V, 0...10 V, Adjustable

  • Connection Cable FRNC 1 m

  • Spindle Driver Universal Spindle Clamp

  • Angle of Rotation Limitation Mechanically Adjustable

More Information

Fields of application: The actuator is particularly suitable for utilisation in outdoor applications and is protected against the following weather conditions: - UV radiation - rain / snow - dirt / dust - Humidity - Changing atmosphere / frequent and severe temperature fluctuations (recommendation: use the actuator with integrated factory-installed heating which can be ordered separately to prevent internal condensation)

Mode of operation: Conventional operation: The actuator is connected with a standard modulating signal of DC 0 ... 10 V and moves the damper to the operating position at the same time as tensioning the return spring. The damper is turned back to the emergency position by spring force when the supply voltage is interrupted. Operation on the MP-Bus: The actuator receives its digital positioning signal from the higher level controller via the MP-Bus and drives to the position defined. Connection U serves as communication interface and does not supply an analogue measuring voltage.

Converter for sensors: Connection option for a sensor (passive or active sensor or switching contact). The MP actuator serves as an analogue/digital converter for the transmission of the sensor signal via MP-Bus to the higher level system.

Parameterisable actuators: The factory settings cover the most common applications. Single parameters can be modified with the Belimo Service Tools MFT-P or ZTH EU.

Simple direct mounting: Simple direct mounting on the damper spindle with an universal spindle clamp, supplied with an anti-rotation device to prevent the actuator from rotating.

Manual override: By using the hand crank the damper can be actuated manually and engaged with the locking switch at any position. Unlocking is carried out manually or automatically by applying the operating voltage. The housing cover must be removed for manual override.

High functional reliability: The actuator is overload protected, requires no limit switches and automatically stops when the end stop is reached.

Adjustable angle of rotation: Adjustable angle of rotation with mechanical end stops.

Home position: The first time the supply voltage is switched on, i.e. at the time of commissioning, the actuator carries out a synchronisation. The synchronisation is in the home position (0%). The actuator then moves into the position defined by the positioning signal.

Adaption and synchronisation: An adaption can be triggered manually by pressing the “Adaption” button or with the PC-Tool. Both mechanical end stops are detected during the adaption (entire setting range). Automatic synchronisation after actuating the hand crank is programmed. The synchronisation is in the home position (0%). The actuator then moves into the position defined by the positioning signal. A range of settings can be adapted using the PC-Tool (see MFT-P documentation)

Manuals & Datasheets
Technical Information

Electrical data:

  • Nominal voltage AC/DC 24 V
  • Nominal voltage frequency 50/60 Hz
  • Nominal voltage range AC 19.2...28.8 V / DC 21.6...28.8 V
  • Power consumption in operation 7 W
  • Power consumption in rest position 3.5 W
  • Power consumption for wire sizing 9.5 VA
  • Connection supply / control Cable 1 m, 4 x 0.75 mm² (halogen-free)
  • Parallel operation Yes (note the performance data)

Functional data:

  • Torque motor Min. 10 Nm
  • Torque spring return Min. 10 Nm
  • Positioning signal Y DC 0...10 V
  • Positioning signal Y note Input impedance 100 kΩ
  • Control signal Y variable Open-close 3-point (AC only) Modulating (DC 0...32 V)
  • Operating range Y DC 2...10 V
  • Operating range Y variable Start point DC 0.5...30 V End point DC 2.5...32 V
  • Position feedback U DC 2...10 V
  • Position feedback U note Max. 0.5 mA
  • Position feedback U variable Start point DC 0.5...8 V End point DC 2.5...10 V
  • Position accuracy ±5%
  • Direction of motion motor Selectable with switch L / R
  • Direction of motion note Y = 0 V: At switch position 0 (ccw rotation) / 1(cw rotation)
  • Direction of motion variable Electronically reversible
  • Direction of motion emergency control function L (ccw)
  • Manual override By means of hand crank and locking switch
  • Angle of rotation Max. 95°
  • Angle of rotation note adjustable starting at 33% in 2.5% steps (with mechanical end stop)
  • Running time motor 150 s / 90°
  • Motor running time variable 40...150 s
  • Running time emergency control position <20 s / 90°
  • Running time emergency setting position note <20 s @ -20...50°C / <60 s @ -30°C
  • Adaption setting range manual
  • Adaption setting range variable No action Adaption when switched on Adaption after pushing the gear disengagement button
  • Override control MAX (maximum position) = 100% MIN (minimum position) = 0% ZS (intermediate position, AC only) = 50%
  • Override control variable MAX = (MIN + 32%)...100% MIN = 0%...(MAX – 32%) ZS = MIN...MAX
  • Sound power level motor 40 dB(A)
  • Spindle driver Universal spindle clamp 12...26.7 mm
  • Position indication Mechanically, pluggable
  • Service life Min. 60,000 emergency positions


  • Protection class IEC/EN III Safety extra-low voltage
  • Protection class UL UL Class 2 Supply
  • Degree of protection IEC/EN IP66
  • Degree of protection NEMA/UL NEMA 4, UL Enclosure Type 4
  • EMC CE according to 2014/30/EU
  • Certification IEC/EN IEC/EN 60730-1 and IEC/EN 60730-2-14
  • Certification UL cULus according to UL 60730-1A, UL 60730-2- 14 and CAN/CSA E60730-1:02
  • Mode of operation Type 1.AA
  • Rated impulse voltage supply / control 0.8 kV
  • Control pollution degree 4
  • Ambient temperature -30...50°C
  • Ambient temperature note -40...50°C for actuator with integrated heating
  • Non-operating temperature -40...80°C
  • Ambient humidity 100% r.h.
  • Maintenance Maintenance-free

Weight: 4.9 kg

Manufacturer Belimo