Barber Colman MK-3821 Electric Damper Actuator (Schneider Electric)
The Barber Colman MK-3821, now offered under the Schneider Electric brand, is a heavy-duty electric damper actuator engineered for use in commercial and industrial HVAC applications. Designed for accurate positioning of air dampers, this actuator delivers reliable two-position or floating control with robust mechanical performance and long service life. Its durable construction and proven design make it a preferred choice for controlling ventilation systems and air handling units.
Technical Specifications
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Model: MK-3821
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Type: Electric Damper Actuator
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Manufacturer: Barber Colman (Schneider Electric)
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Control Type: Two-position or floating (verify based on application setup)
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Power Supply: Typically 120V AC (confirm specific model voltage)
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Torque Output: (Confirm from datasheet – generally rated to operate medium to large dampers)
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Drive Type: Rotary, with direct-coupled or crank-arm linkage
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Timing: Fixed travel time (typically around 30–90 seconds)
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Mounting: Shaft or bracket-mounted
Key Features
-Rugged damper actuator for HVAC air control
-Compatible with Barber Colman legacy and modern Schneider control systems
-Provides dependable torque and smooth operation over extended cycles
-Durable gear assembly and motor construction for long-term reliability
-Used in constant or variable air volume (VAV) systems and economizers
Compatible Components & Accessories
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Damper crank arms and linkages
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Position indication accessories
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Barber Colman or Schneider control modules and thermostats
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Auxiliary switch kits for feedback or interlock functions
Industry Applications
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Commercial building ventilation and air handling systems
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Industrial exhaust and supply damper control
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HVAC zones requiring floating or two-position damper actuation
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Energy management systems with mechanical ventilation control
Installation & Maintenance Notes
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Confirm power supply and control signal compatibility before installation
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Secure actuator to damper shaft or bracket using appropriate hardware
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Calibrate travel and direction as needed before system commissioning
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Inspect actuator periodically for wear, corrosion, or binding
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Maintain clean operating environment and use genuine accessories for replacement
The Barber Colman MK-3821 electric damper actuator is a reliable solution for demanding air control tasks, offering consistent performance and seamless integration into both legacy and modern HVAC control systems.
We ship this product worldwide! Delivery is normally stock.
Request a Quote now or call us at 1-800-755-2883 for expert assistance