
Greenheck 385253 Control Transformer
The Greenheck 385253 Control Transformer is a critical power conversion component engineered specifically for integrating Vari-Green motor technology and advanced ventilation controls into demanding industrial and commercial HVAC systems. This multi-voltage transformer features a versatile primary input range of 100-277 VAC, allowing technicians to pull power directly from a wide array of line voltage sources at the fan. It effectively steps down and converts power to a stable 24 VDC secondary output, essential for driving low-voltage sensors, remote dials, and building automation interface modules.
Designed for seamless interface with 0-10 VDC control signals, the 385253 ensures precise modulation and consistent power delivery in demand-controlled ventilation (DCV) environments. Its robust, compact construction is built to withstand the thermal and mechanical stresses common in rooftop exhaust units and dedicated outdoor air systems (DOAS). This OEM Greenheck part includes secondary dry auxiliary contacts, providing the necessary interlocking capability for motorized dampers and external signaling without requiring additional relays or complex field wiring.
Key Benefits
- Universal Voltage Compatibility: Supports a primary range of 100-277 VAC, eliminating the need for multiple transformer SKUs on job sites with varying supply voltages.
- Integrated Control Logic: Tailored for Greenheck Vari-Green systems, providing a dedicated 24V DC power source for high-efficiency motor controllers.
- Auxiliary Interlocking: Features built-in auxiliary contacts to simplify the synchronization of motorized dampers and peripheral safety devices.
- Industrial Grade Reliability: Engineered for continuous duty in high-cycle commercial ventilation applications, ensuring stable 0-10V signal integrity.
Common Questions
What is the primary application for the 385253 transformer?
This unit is primarily used to provide a reliable 24V DC power source and signaling interface for Vari-Green motors and controllers in exhaust fans and air handling units.
Does this transformer support 277V lighting circuits?
Yes, the 100-277 VAC primary rating allows it to be tapped into standard 277V commercial power circuits commonly found in industrial lighting and HVAC distributions.
Can this be used for 0-10V dimming or speed control?
While the transformer provides the power to the controller, it is specifically designed to facilitate 0-10 VDC modulation for fan speed and motor torque adjustments in HVAC systems.
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.
Original: $394.01
-65%$394.01
$137.90Greenheck 385253 Control Transformer
The Greenheck 385253 Control Transformer is a critical power conversion component engineered specifically for integrating Vari-Green motor technology and advanced ventilation controls into demanding industrial and commercial HVAC systems. This multi-voltage transformer features a versatile primary input range of 100-277 VAC, allowing technicians to pull power directly from a wide array of line voltage sources at the fan. It effectively steps down and converts power to a stable 24 VDC secondary output, essential for driving low-voltage sensors, remote dials, and building automation interface modules.
Designed for seamless interface with 0-10 VDC control signals, the 385253 ensures precise modulation and consistent power delivery in demand-controlled ventilation (DCV) environments. Its robust, compact construction is built to withstand the thermal and mechanical stresses common in rooftop exhaust units and dedicated outdoor air systems (DOAS). This OEM Greenheck part includes secondary dry auxiliary contacts, providing the necessary interlocking capability for motorized dampers and external signaling without requiring additional relays or complex field wiring.
Key Benefits
- Universal Voltage Compatibility: Supports a primary range of 100-277 VAC, eliminating the need for multiple transformer SKUs on job sites with varying supply voltages.
- Integrated Control Logic: Tailored for Greenheck Vari-Green systems, providing a dedicated 24V DC power source for high-efficiency motor controllers.
- Auxiliary Interlocking: Features built-in auxiliary contacts to simplify the synchronization of motorized dampers and peripheral safety devices.
- Industrial Grade Reliability: Engineered for continuous duty in high-cycle commercial ventilation applications, ensuring stable 0-10V signal integrity.
Common Questions
What is the primary application for the 385253 transformer?
This unit is primarily used to provide a reliable 24V DC power source and signaling interface for Vari-Green motors and controllers in exhaust fans and air handling units.
Does this transformer support 277V lighting circuits?
Yes, the 100-277 VAC primary rating allows it to be tapped into standard 277V commercial power circuits commonly found in industrial lighting and HVAC distributions.
Can this be used for 0-10V dimming or speed control?
While the transformer provides the power to the controller, it is specifically designed to facilitate 0-10 VDC modulation for fan speed and motor torque adjustments in HVAC systems.
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.
Product Information
Product Information
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Shipping & Returns
Description
The Greenheck 385253 Control Transformer is a critical power conversion component engineered specifically for integrating Vari-Green motor technology and advanced ventilation controls into demanding industrial and commercial HVAC systems. This multi-voltage transformer features a versatile primary input range of 100-277 VAC, allowing technicians to pull power directly from a wide array of line voltage sources at the fan. It effectively steps down and converts power to a stable 24 VDC secondary output, essential for driving low-voltage sensors, remote dials, and building automation interface modules.
Designed for seamless interface with 0-10 VDC control signals, the 385253 ensures precise modulation and consistent power delivery in demand-controlled ventilation (DCV) environments. Its robust, compact construction is built to withstand the thermal and mechanical stresses common in rooftop exhaust units and dedicated outdoor air systems (DOAS). This OEM Greenheck part includes secondary dry auxiliary contacts, providing the necessary interlocking capability for motorized dampers and external signaling without requiring additional relays or complex field wiring.
Key Benefits
- Universal Voltage Compatibility: Supports a primary range of 100-277 VAC, eliminating the need for multiple transformer SKUs on job sites with varying supply voltages.
- Integrated Control Logic: Tailored for Greenheck Vari-Green systems, providing a dedicated 24V DC power source for high-efficiency motor controllers.
- Auxiliary Interlocking: Features built-in auxiliary contacts to simplify the synchronization of motorized dampers and peripheral safety devices.
- Industrial Grade Reliability: Engineered for continuous duty in high-cycle commercial ventilation applications, ensuring stable 0-10V signal integrity.
Common Questions
What is the primary application for the 385253 transformer?
This unit is primarily used to provide a reliable 24V DC power source and signaling interface for Vari-Green motors and controllers in exhaust fans and air handling units.
Does this transformer support 277V lighting circuits?
Yes, the 100-277 VAC primary rating allows it to be tapped into standard 277V commercial power circuits commonly found in industrial lighting and HVAC distributions.
Can this be used for 0-10V dimming or speed control?
While the transformer provides the power to the controller, it is specifically designed to facilitate 0-10 VDC modulation for fan speed and motor torque adjustments in HVAC systems.
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.












