For contractors demanding reliable zone control, the Belimo ZONE24NC-S Actuator delivers robust performance. This 24V zone valve actuator is engineered for precise on/off control in HVAC systems, ensuring optimal flow management. As a spring return normally closed actuator, it defaults to a safe, closed position upon power loss, a critical feature for system integrity. Operating on both 24Vac and 24Vdc, it offers versatile integration into various setups. With a running power consumption of 6.5W and 7VA for wire sizing, it’s designed for efficiency. The integrated auxiliary switch actuator (1x SPST, 5A @ 120V) provides valuable feedback for system monitoring or sequencing additional equipment. Its NEMA 1 / UL Enclosure Type 1 rating and IP20 protection category confirm its suitability for typical indoor mechanical room environments. Installation is straightforward, featuring a manual override hand lever and a swift 5-second spring return time for fail-safe operation, with a motor run time of 20-40 seconds for controlled modulation. Reliable Fail-Safe Operation: Spring return mechanism ensures the valve closes securely upon power interruption, enhancing system safety. Versatile Power Compatibility: Operates seamlessly on both 24Vac and 24Vdc, simplifying integration into diverse control circuits. Integrated Auxiliary Feedback: A single SPST auxiliary switch provides critical status indication or enables control of other components. Durable Construction: Rated NEMA 1 / UL Enclosure Type 1 and IP20 for dependable performance in standard mechanical room conditions. Efficient Control: Low power consumption (6.5W running, 7VA for wire sizing) contributes to energy-conscious system design. Common Questions How do I wire a Belimo ZONE24NC-S actuator into my existing control panel? This actuator utilizes a straightforward on/off control signal, compatible with standard 24Vac/dc circuits. Refer to the technical data sheet for specific terminal assignments and recommended wiring practices for the main power and auxiliary switch. What is the typical power draw for the Belimo ZONE24NC-S during operation? The unit draws 6.5W while running, with a power consumption for wire sizing rated at 7VA. This allows for efficient circuit design and load calculation. Is the Belimo ZONE24NC-S compatible with all 24Vac HVAC zone control systems? Yes, its 24Vac/dc compatibility and on/off control signal make it broadly suitable for most low-voltage HVAC zone control applications requiring a normally closed, spring-return actuator with auxiliary feedback. Always verify valve body compatibility. Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.