NFB24-SR | Belimo 90 In Lb Spring Return Modulating Damper Actuator 24V

Belimo · Motors & Motion

Description  The Belimo NFB24-SR is a spring return damper actuator delivering 90 in-lb of torque for accurate modulating airflow control. Operating on AC/DC 24 V with a 2…10 V control signal, it provides dependable fail-safe operation for HVAC damper applications.     Technical Specifications  Condition New/Never Used Surplus Brand Belimo Category Actuators & Dampers Part Number NFB24-SR Subcategory Damper Actuators Actuator Type Spring return, modulating Nominal Torque 90 in-lb (10 Nm) Nominal Voltage AC/DC 24 V Nominal Frequency 50/60 Hz Voltage Range AC 19.2…28.8 V / DC 21.6…28.8 V Control Signal 2…10 V (4…20 mA with resistor) Power Consumption (Running) 3.5 W Power Consumption (Rest) 2.5 W Transformer Sizing 6 VA Angle of Rotation Adjustable 35…95° Running Time 95 s / 90° Fail-Safe Running Time <20 s @ -20…50°C Electrical Connection 18 AWG cable, 1 m, 1/2" NPT Degree of Protection NEMA 2 Ambient Temperature -22…122°F (-30…50°C) Weight 5.3 lb (2.4 kg)   Information About NFB24-SR The NFB24-SR is part of Belimo’s proven spring return damper actuator series designed for reliable airflow modulation in HVAC systems. It combines precise modulating control with a mechanical spring return that drives the damper to a defined safety position during power loss. The actuator supports standard 2…10 V control with optional 4…20 mA input and includes selectable direction of rotation for flexible installation. Its maintenance-free construction and electronic overload protection ensure consistent performance over extended service life. Key Features Spring Return Fail-Safe Operation: Automatically returns the damper to a predefined safety position upon power interruption. Modulating Control Capability: Supports 2…10 V control with optional 4…20 mA input for precise airflow regulation. Reliable Torque Output: Delivers 90 in-lb of torque suitable for medium-sized air control dampers. Adjustable Rotation Range: Mechanical end stops allow angle adjustment from 35° to 95° for application-specific requirements. Integrated Position Feedback: Provides 2…10 V feedback for accurate damper position monitoring. Quiet Operation: Low motor noise level supports use in occupied and noise-sensitive environments. Durable And Protected Design: Double-insulated construction and NEMA 2 rating support dependable HVAC installation. The NFB24-SR delivers the reliability and precision required for safe and accurate modulating damper control in commercial HVAC systems.

Brand: Belimo · Category: Motors & Motion

Key features

• Spring Return Fail-Safe Operation: Automatically returns the damper to a predefined safety position upon power interruption.
• Modulating Control Capability: Supports 2…10 V control with optional 4…20 mA input for precise airflow regulation.
• Reliable Torque Output: Delivers 90 in-lb of torque suitable for medium-sized air control dampers.
• Adjustable Rotation Range: Mechanical end stops allow angle adjustment from 35° to 95° for application-specific requirements.
• Integrated Position Feedback: Provides 2…10 V feedback for accurate damper position monitoring.
• Quiet Operation: Low motor noise level supports use in occupied and noise-sensitive environments.
• Durable And Protected Design: Double-insulated construction and NEMA 2 rating support dependable HVAC installation.

Specifications

Contact Safety Shops for pricing, delivery and project support in the UAE.