Bray Commercial DCM24-310 Actuator

The Bray DCM24-310 Actuator is a high-torque direct coupled actuator designed for the precise control of large dampers and valves in demanding HVACR applications. Delivering 310 in-lb torque, this non-spring return actuator operates on a 24VAC/DC power supply and utilizes a 0-10VDC modulating signal (or 2-10VDC/4-20mA with a 500? resistor) to ensure accurate positioning. Engineered for industrial reliability, it features a brushless DC motor with microprocessor-controlled electronic stall protection, eliminating the need for limit switches. Its universal shaft clamp accommodates square or round stems, while the selectable direction of rotation—controlled via a simple toggle—streamlines field installation. By maintaining consistent performance across its 95-degree stroke, this actuator provides the high control accuracy necessary for critical air handling unit (AHU) and terminal unit sequences, making it a standard choice for contractors prioritizing durability and minimal maintenance in large-scale building automation systems.

• High Torque Output: Provides 310 in-lb (35 Nm) for reliable operation of larger damper blades and ball valves.
• Precise Modulation: Advanced 0-10VDC control signal support ensures tight tolerance in variable air volume and cooling applications.
• Brushless DC Technology: Enhances longevity and efficiency while preventing motor burnout during stall conditions.
• Field Versatility: Features a selectable rotation switch and manual override button for simplified commissioning and troubleshooting.
• Rugged Housing: NEMA 2 equivalent rating ensures the internal gear train is protected against standard mechanical room debris.

Common Questions

How do I wire the Bray DCM24-310 for a 4-20mA signal?
To use a 4-20mA control signal, install a 500-ohm resistor across the input leads to convert the current signal into a compatible voltage range for the actuator's microprocessor.

Can this actuator be used in failsafe applications?
The DCM24-310 is a non-spring return model. In the event of a power loss, the actuator will remain in its last position. For applications requiring a specific fail-open or fail-closed state, a spring-return series actuator should be utilized.

What is the typical runtime for a full 90-degree stroke?
The DCM24-310 maintains a consistent timing of approximately 80 to 110 seconds, ensuring smooth air or fluid transition without causing pressure spikes in the system.

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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.