AFRB24 | Belimo 24V Spring Return On Off Valve Actuator

Belimo · Motors & Motion

Description  The Belimo AFRB24 is a spring return valve actuator designed for reliable on/off control of HVAC control valves. Operating on AC/DC 24 V, it provides dependable fail-safe positioning and consistent performance in hydronic control applications.     Technical Specifications  Condition New/Never Used Surplus Brand Belimo Category Valve Actuators Part Number AFRB24 Subcategory Spring Return Actuators Actuator Type Spring return, on/off 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 Power Consumption (Running) 5 W Power Consumption (Rest) 2.5 W Transformer Sizing 7.5 VA Control Type On/Off Angle of Rotation 90° Running Time 75 s / 90° Fail-Safe Running Time <20 s Electrical Connection 18 AWG cable, 1 m, 1/2" NPT conduit Degree of Protection NEMA 2 / UL Type 2 Ambient Temperature -22…122°F (-30…50°C) Weight 5.3 lb (2.4 kg)   Information About AFRB24 The AFRB24 is part of Belimo’s spring return actuator lineup developed for dependable valve actuation in HVAC systems. It uses a mechanical spring return mechanism to automatically drive the valve to a predefined safety position during power loss. The actuator supports simple on/off control and allows reversible mounting for both motor and fail-safe direction, providing installation flexibility. Designed for maintenance-free operation, it includes electronic overload protection and robust enclosure construction for long-term reliability. Key Features Spring Return Fail-Safe Operation: Integrated spring mechanism automatically moves the valve to a safety position when power is lost, supporting system protection. On Off Control Functionality: Designed for straightforward open and close valve operation in hydronic control systems. Reversible Direction Of Motion: Motor and fail-safe rotation direction can be configured through CW or CCW mounting for flexible installation. Reliable 24 Volt Power Operation: Operates on standard AC/DC 24 V control power commonly used in HVAC systems. Manual Override Capability: Supplied 5 mm hex crank allows temporary manual valve positioning during commissioning or service. Electronic Overload Protection: Protects the actuator throughout the full 0…95° rotation range to prevent damage under abnormal conditions. Plenum Rated Construction: UL 2043 compliant design supports installation in air plenums per NEC and IMC requirements. The AFRB24 delivers the reliability and precision required for safe, dependable on/off valve control in commercial HVAC applications.

Brand: Belimo · Category: Motors & Motion

Key features

• Spring Return Fail-Safe Operation: Integrated spring mechanism automatically moves the valve to a safety position when power is lost, supporting system protection.
• On Off Control Functionality: Designed for straightforward open and close valve operation in hydronic control systems.
• Reversible Direction Of Motion: Motor and fail-safe rotation direction can be configured through CW or CCW mounting for flexible installation.
• Reliable 24 Volt Power Operation: Operates on standard AC/DC 24 V control power commonly used in HVAC systems.
• Manual Override Capability: Supplied 5 mm hex crank allows temporary manual valve positioning during commissioning or service.
• Electronic Overload Protection: Protects the actuator throughout the full 0…95° rotation range to prevent damage under abnormal conditions.
• Plenum Rated Construction: UL 2043 compliant design supports installation in air plenums per NEC and IMC requirements.

Specifications

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