Belimo NM230A-S
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Belimo NM230A-S Modulating Damper Actuator

Belimo NM230A-S Modulating Damper Actuator: Precise airflow control for HVAC systems. 10 Nm torque, AC 100-240V, ideal for dampers up to 2 m². Features open/close, 3-point control, and integrated auxiliary switch.

Key Features

• Air damper size up to approx. 2 m²
• Torque motor 10 Nm
• Nominal voltage AC 100…240 V
• Control Open/close, 3-point
• with integrated auxiliary switch

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Description
Specification
Datasheet
Review & Q & A

Description

Belimo NM230A-S Damper Actuator

The Belimo NM230A-S is a high-performance modulating damper actuator designed to deliver accurate airflow control. Known for its advanced technology, it ensures smooth and quiet operation while meeting modern HVAC demands. The NM230A-S operates using a modulating control signal (0-10V), which allows it to adjust the damper position proportionally. The actuator receives the input voltage and translates it into precise movements, ensuring accurate airflow regulation.

Belimo is a globally recognized brand known for its innovative and high-quality HVAC solutions. Their products are engineered to offer reliability, efficiency, and cutting-edge technology, making them a preferred choice for professionals worldwide.

Belimo NM230A-S

The Belimo NM230A-S is intended for use in stationary heating, ventilation, and air-conditioning (HVAC) systems. It must not be used outside its specified application range, particularly in aircraft or any other airborne transport.

Outdoor Use: The device can only be used outdoors if it is protected from direct exposure to (sea) water, snow, ice, sunlight, or aggressive gases. Additionally, the ambient conditions must always remain within the limits specified in the product data sheet.

Caution – Power Supply Voltage!
Installation must only be carried out by authorized specialists in compliance with all relevant legal and institutional installation regulations.

  • The device must only be opened by the manufacturer. It contains no user-serviceable or replaceable parts.
  • Cables must remain attached and must not be removed from the device.

When calculating the required torque, the damper manufacturer’s specifications—such as cross-section, design, installation conditions, and ventilation factors—must be considered.

Specifications

Electrical data

  • Nominal voltage AC: 100…240 V
  • Nominal voltage frequency: 50/60 Hz
  • Nominal voltage range AC: 85…265 V
  • Power consumption in operation: 2.5 W
  • Power consumption in rest position: 0.6 W
  • Power consumption for wire sizing: 5.5 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 II, reinforced insulation
  • Protection class: UL II, reinforced insulation
  • 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
  • Rated impulse voltage: supply / control 2.5 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

 

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Datasheet

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