NMB24-SR Belimo 24VAC/DC Modulating Damper Actuator 90 in-lb (10 Nm) 2-10V Non-Spring Return

Description:

• Genuine Belimo modulating damper actuator for commercial HVAC and building automation systems
• Provides 90 in-lb (10 Nm) torque for controlling air dampers in ventilation and air handling applications
• Operates on 24 VAC/DC power with 2...10 VDC modulating control
• Non-spring return (non-fail-safe) actuator maintains position during normal operation
• 2...10 VDC position feedback output supports precise monitoring and building automation integration
• Direct-coupled design eliminates the need for linkage, reducing installation time and maintenance
• Adjustable rotation up to 95° with mechanical end stops
• Manual override push button allows convenient positioning during installation and servicing
• Selectable direction of rotation using built-in switch
• Ideal for air handling units (AHUs), VAV systems, rooftop units, HVAC dampers, and commercial building automation systems.

Specifications:

• Manufacturer Name: Belimo
• Part Number (MPN): NMB24-SR
• Product Type: Modulating Damper Actuator
• Actuator Type: Non-Fail-Safe (Non-Spring Return)
• Torque: 90 in-lb (10 Nm)
• Supply Voltage: AC/DC 24 V
• Frequency: 50/60 Hz
• Voltage Range:
  • AC 19.2...28.8 V
  • DC 21.6...28.8 V
• Control Signal: 2...10 VDC Modulating
• Optional Control: 4...20 mA (with 500 Ω resistor)
• Position Feedback: 2...10 VDC
• Running Time: 95 seconds / 90°
• Maximum Rotation: 95°
• Direction of Rotation: Selectable (0/1 Switch)
• Manual Override: External Push Button
• Power Consumption:
  • Running: 1.5 W
  • Holding: 0.4 W
• Transformer Sizing: 5 VA
• Degree of Protection: NEMA 2 / IP54
• Operating Temperature: -30°C to +50°C (-22°F to +122°F)
• Ambient Humidity: Up to 95% RH, Non-Condensing
• Certifications:
  • cULus
  • CE
  • UL 2043
  • ISO 9001 Manufactured
• Applications:
  • HVAC Systems
  • Air Handling Units (AHUs)
  • VAV Systems
  • Commercial Buildings
  • Damper Control
  • Building Automation Systems (BAS).

Dimensions:

• Standard direct-coupled actuator housing designed for mounting on damper shafts up to 1.05 in (26.7 mm) diameter.
• Adjustable rotation up to 95°.

Weight:

• Approximate Weight: 0.96 kg (2.1 lb).