Daikin-McQuay 667715901 Control Transformer Overview
The Daikin-McQuay 667715901 is an OEM control transformer engineered for use in commercial HVAC equipment. It steps down high-voltage primary inputs of 277V or 460V to a 24V secondary output, delivering up to 75 VA of power to support control circuits, relays, and low-voltage components in rooftop units, air handlers, and other Daikin-McQuay commercial systems.
Key Specifications
- SKU: 667715901
- Brand: Daikin-McQuay
- Primary Input Voltage: 277V / 460V
- Secondary Output Voltage: 24V
- VA Rating: 75 VA
- Application: Commercial HVAC control circuits
Features & Benefits
- Genuine OEM Daikin-McQuay replacement part for assured fit and compatibility
- Dual primary voltage (277V/460V) provides flexibility across different electrical service configurations
- 24V secondary output powers standard low-voltage HVAC control circuits
- 75 VA capacity supports relays, contactors, and control boards in commercial applications
- Designed for long-term reliability in demanding commercial HVAC environments
Application
This transformer is a direct OEM replacement intended for Daikin-McQuay commercial rooftop units, air handling units, and other equipment requiring a 277/460V to 24V step-down transformer. Always verify compatibility with your specific unit model before installation.








