NFBUP-S | Belimo 90 In Lb Spring Return Damper Actuator 24–240V On/Off

Belimo · Motors & Motion

Description  The Belimo NFBUP-S is a universal spring return damper actuator designed for reliable on/off control in commercial HVAC systems. It operates across a wide AC/DC voltage range and delivers consistent 90 in-lb torque with integrated fail-safe functionality.     Technical Specifications  Condition New/Never Used Surplus Brand Belimo Part Number NFBUP-S Category Actuators & Dampers Actuator Type Damper actuator, spring return Nominal Torque 90 in-lb (10 Nm) Nominal Voltage AC 24…240 V / DC 24…125 V Nominal Frequency 50/60 Hz Voltage Range AC 19.2…264 V / DC 21.6…137.5 V Power Consumption (Operation) 6 W Power Consumption (Rest) 2.5 W Transformer Sizing 9.5 VA Control Input On/Off Auxiliary Switches 2 × SPDT Angle of Rotation 95°, adjustable (35…95°) Running Time (Motor) 75 s / 90° Running Time (Fail-Safe) <20 s @ -20…50°C Noise Level (Motor) 50 dB(A) Manual Override 5 mm hex crank Electrical Connection (2) 18 AWG cables, 1 m, 1/2" NPT Degree of Protection NEMA 2 Ambient Temperature -22…122°F (-30…50°C) Weight 4.9 lb (2.2 kg)   Information About NFBUP-S The NFBUP-S is part of Belimo’s universal voltage damper actuator range, engineered to simplify panel design and reduce inventory complexity. Its wide voltage capability allows the same actuator to be used across multiple system standards without modification. The integrated spring return ensures the damper moves to a defined safety position during power loss, supporting system protection and code compliance. Designed for maintenance-free operation, it incorporates electronic overload protection across the full stroke for long-term reliability. Key Features Universal Voltage Power Supply: Operates on AC 24…240 V and DC 24…125 V, reducing the need for multiple actuator variants and simplifying system standardization. Integrated Spring Return Fail-Safe: Automatically drives the damper to a preset safety position on power loss, ensuring airflow safety and equipment protection. Consistent Torque Performance: Provides 90 in-lb (10 Nm) of torque across the full rotation range, suitable for a wide variety of HVAC dampers. Dual Adjustable Auxiliary Switches: Includes two SPDT switches with adjustable switching points for end-position signaling, interlocks, or system feedback. Adjustable Rotation Angle: Mechanical end stops allow precise setting between 35° and 95°, enabling accurate matching to damper requirements. Electronic Overload Protection: Protects the actuator throughout the entire stroke, preventing mechanical damage and extending service life. Flexible Installation And Serviceability: Reversible mounting direction, selectable fail-safe action, and a manual override crank simplify installation, commissioning, and maintenance. The NFBUP-S delivers the reliability and precision required for dependable on/off damper control in commercial and industrial HVAC applications.

Brand: Belimo · Category: Motors & Motion

Key features

• Universal Voltage Power Supply: Operates on AC 24…240 V and DC 24…125 V, reducing the need for multiple actuator variants and simplifying system standardization.
• Integrated Spring Return Fail-Safe: Automatically drives the damper to a preset safety position on power loss, ensuring airflow safety and equipment protection.
• Consistent Torque Performance: Provides 90 in-lb (10 Nm) of torque across the full rotation range, suitable for a wide variety of HVAC dampers.
• Dual Adjustable Auxiliary Switches: Includes two SPDT switches with adjustable switching points for end-position signaling, interlocks, or system feedback.
• Adjustable Rotation Angle: Mechanical end stops allow precise setting between 35° and 95°, enabling accurate matching to damper requirements.
• Electronic Overload Protection: Protects the actuator throughout the entire stroke, preventing mechanical damage and extending service life.
• Flexible Installation And Serviceability: Reversible mounting direction, selectable fail-safe action, and a manual override crank simplify installation, commissioning, and maintenance.

Specifications

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