The Johnson Controls C550YNN-1 is a System 550 Power Module engineered to provide stable, low-voltage power for commercial HVAC control applications. It accepts line-voltage inputs of 120VAC or 208/240VAC and steps them down to a clean 24V output, making it an ideal power source for System 550 controllers and associated building automation components.
Key Features
- Converts 120VAC or 208/240VAC line voltage to 24V output
- Designed for use with Johnson Controls System 550 control platform
- Supports commercial HVAC and building automation system installations
- Provides reliable, regulated low-voltage power to downstream controls
- Simplifies wiring by integrating power conversion into the control panel
Specifications
- SKU: C550YNN-1
- Brand: Johnson Controls
- Input Voltage: 120VAC / 208-240VAC
- Output Voltage: 24V
- Application: System 550 commercial HVAC controls
Application
The C550YNN-1 is suited for commercial and light industrial HVAC control panels where a dependable 24V power supply is required. It integrates seamlessly with the Johnson Controls System 550 family of controllers, ensuring consistent performance across a wide range of building automation and HVAC system configurations.








