AFRB24-SR | Belimo Electric Ball Valve Actuator Spring Return Modulating 24 V 180 In Lb

Belimo · Motors & Motion

Description  The Belimo AFRB24-SR is a spring return electric ball valve actuator designed for precise modulating control of large HVAC valves. It operates on AC/DC 24 V and delivers 180 in-lb of torque with proportional 2–10 VDC control and integrated fail-safe functionality.     Technical Specifications  Condition New/Never Used Surplus Brand Belimo Category HVAC Control Components Part Number AFRB24-SR Subcategory Valve Actuators Actuator Type Electric, Spring Return, Modulating Compatible Valve Size 1-1/4 in to 3 in Nominal Voltage AC/DC 24 V Frequency 50/60 Hz Voltage Range AC 19.2–28.8 V / DC 21.6–28.8 V Power Consumption (Operation) 5.5 W Power Consumption (Rest) 3 W Transformer Sizing 8.5 VA Control Signal 2–10 VDC (4–20 mA with resistor) Input Impedance 100 kΩ (2–10 V), 500 Ω (4–20 mA) Position Feedback 2–10 V, max. 0.5 mA Torque Output 180 in-lb Angle of Rotation 90° Running Time (Motor) 95 s / 90° Running Time (Fail-Safe) <20 s Manual Override 5 mm hex crank (included) Overload Protection Electronic, full rotation Degree of Protection NEMA 2 Electrical Connection 18 AWG cable, 1 m, 1/2 in NPT Power Source UL Class 2 Weight 5.4 lb (2.4 kg)   Information About AFRB24-SR The AFRB24-SR is a Belimo spring return actuator engineered for ball valve control in hydronic heating and cooling systems. It supports proportional modulation using a 2–10 VDC signal and provides position feedback for monitoring and closed-loop control. The integrated spring return mechanism ensures the valve moves to a defined safety position during power loss. Its robust mechanical design and included WAF linkage support reliable operation on larger valves in commercial HVAC installations. Key Features Spring return fail-safe operation: Automatically drives the valve to a predefined safety position when power is lost. Modulating control capability: Accepts a 2–10 VDC control signal with optional 4–20 mA support for flexible system integration. High torque output: Provides 180 in-lb of torque for dependable actuation of large-diameter ball valves. Integrated position feedback: Supplies a 2–10 V feedback signal for accurate valve position monitoring. Selectable direction of rotation: Motor direction can be configured by switch, with reversible fail-safe action via mounting orientation. Manual override provision: Includes a hex crank to allow manual positioning during commissioning or maintenance. Electronic overload protection: Protects internal components throughout the full rotation range to enhance durability. The AFRB24-SR delivers the reliability and precision required for safe, accurate modulating control of ball valves in professional HVAC systems.

Brand: Belimo · Category: Motors & Motion

Key features

• Spring return fail-safe operation: Automatically drives the valve to a predefined safety position when power is lost.
• Modulating control capability: Accepts a 2–10 VDC control signal with optional 4–20 mA support for flexible system integration.
• High torque output: Provides 180 in-lb of torque for dependable actuation of large-diameter ball valves.
• Integrated position feedback: Supplies a 2–10 V feedback signal for accurate valve position monitoring.
• Selectable direction of rotation: Motor direction can be configured by switch, with reversible fail-safe action via mounting orientation.
• Manual override provision: Includes a hex crank to allow manual positioning during commissioning or maintenance.
• Electronic overload protection: Protects internal components throughout the full rotation range to enhance durability.

Specifications

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