The Delta Control Products D24-53-T is a non-spring return electric actuator designed for precise control of dampers and valves in HVAC systems. Operating on a 24 VAC power supply, it delivers a torque output of 53 in-lb (6 Nm), suitable for various on/off and floating point control applications. The actuator features a nominal 90° rotation range, adjustable via end-stop set screws, and completes a full stroke in approximately 90 seconds at 60 Hz. It accommodates round shafts ranging from 3/8 to 1/2 inches (10 to 13 mm) and square shafts of 3/8 inches (10 mm). The D24-53-T is equipped with a manual gear release for easy positioning during installation or maintenance. Its enclosure meets NEMA 2 specifications, making it suitable for indoor environments with no direct exposure to water beyond these conditions. Additionally, the actuator includes 1/2-inch NPT threaded conduit openings for secure electrical connections.
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| Manufacturer | Delta Control Products |
| Part Number | D24-53-T |
| Torque | 53 in-lb (6 Nm) |
| Power Supply | 24 VAC |
| Control Signal | On/Off and Floating Point |
| Rotation Range | 90° nominal, adjustable via end-stop set screws |
| Runtime | 90 seconds for 90° rotation at 60 Hz |
| Shaft Compatibility | Round: 3/8 to 1/2 inches (10 to 13 mm); Square: 3/8 inches (10 mm) |
| Manual Override | Manual gear release |
| Enclosure Rating | NEMA 2 |
| Conduit Openings | 1/2-inch NPT threaded |