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NRFA Spring-Return Actuator NC, 10 Nm, AC / DC 24...230 V, 20 s

On request
£168.67 £202.40

NRFA Spring-Return Actuator NC, 10 Nm, AC / DC 24...230 V, 20 s

  • 10 Nm, < 75 s, 90°

  • AC / DC 24...230 V, Open/Close

  • IP 54, Manual override with integrated position stop

  • Running time spring < 20 s

  • Connection PVC cable 1m

  • Emergency control closed

  • with mounting kit for RKH mounted

More Information

Mode of operation: The actuator is equipped with a universal voltage feed module that can utilise supply voltages of AC 24 ... 240V and DC 24 ... 125V. The actuator moves the ball valve to the operating position at the same time as tensioning the return spring. The ball valve is turned back to the emergency position by spring force when the supply voltage is interrupted.

Direct mounting: Simple direct mounting on the ball valve with only one screw. The mounting orientation in relation to the ball valve can be selected in 90° steps.

Manual override: Manual actuation of the valve with manual elevator crank, engagement with the locking switch at any position. Unlocking is manual or automatic by applying the operating voltage.

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 stop.

Manuals & Datasheets
Technical Information

Electrical data:

  • Nominal voltage AC 24...240 V / DC 24...125 V
  • Nominal voltage frequency 50/60 Hz
  • Nominal voltage range AC 19.2...264 V / DC 21.6...137.5 V
  • Power consumption in operation 6 W
  • Power consumption in rest position 2.5 W
  • Power consumption for wire sizing 9.5 VA
  • Connection supply / control Cable 1 m, 2 x 0.75 mm²
  • Parallel operation Yes (note the performance data)

Functional data:

  • Torque motor Min. 10 Nm
  • Torque spring return Min. 10 Nm
  • Direction of rotation spring-return Deenergised NC, valve closed (A - AB = 0%)
  • Manual override By means of hand crank and locking switch
  • Angle of rotation 90°
  • Running time motor 75 s / 90°
  • Running time emergency setting position <20 s / 90°
  • Sound power level motor max. 45 dB(A)
  • Position indication Mechanical
  • Service life Min. 60,000 emergency positions


  • Protection class IEC/EN II Protective insulated
  • Protection class UL II Protective insulated
  • Degree of protection IEC/EN IP54
  • Degree of protection NEMA/UL NEMA 2, UL Enclosure Type 2
  • EMC CE according to 2004/108/EC
  • Low voltage directive CE according to 2006/95/EC
  • 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 4 kV
  • Control pollution degree 3
  • Ambient temperature -30...50°C
  • Non-operating temperature -40...80°C
  • Ambient humidity 95% r.h., non-condensing
  • Maintenance Maintenance-free

Weight: 2.1 kg

Manufacturer Belimo