Belimo NFG-L - rotary actuator for dampers with spring return

Belimo NFG-L – actuator for dampers

Rotary actuator with a safety function for positioning dampers in HVAC systems, comparable industrial systems and technical building systems. If the power supply is interrupted, the spring moves the damper to its safety position. The device is designed for air dampers with an area of up to approx. 2 m².

Key specifications

• Motor and safety function torque: 10 Nm.
• Rated voltage: AC 24...240 V / DC 24...125 V; frequency: 50/60 Hz.
• Control: Close/Open; safety function direction of rotation: L (ccw).
• Motor running time: 75 s / 90°; safety function running time: <20 s @ -20...50°C, <60 s @ -30°C.
• Angle of rotation: max. 95°, adjustable using mechanical end stops.
• Power consumption during operation: 6 W; in rest position: 2.5 W; power rating for wire sizing: 9.5 VA.
• Power and control connection: 1 m cable, 2x 0.75 mm², halogen-free.
• Universal shaft clamp for 12...26.7 mm; mechanical position indicator.
• Manual adjustment using a crank and locking switch.
• Degree of protection IP66/67; NEMA 4X; UL Enclosure Type 4X.
• Ambient temperature: -30...50°C [-22...122°F].

The actuator is particularly suitable for outdoor applications and is protected against UV radiation, rain, snow, dirt, dust and moisture. It is not intended for corrosive environments or applications involving exposure to chemicals.