Description
The Utica-Dunkirk 240005330 is an OEM replacement control transformer engineered to deliver dependable, low-voltage power to the control circuits of Utica-Dunkirk boilers and heating systems. With a 120V primary and a 24V secondary at 40VA capacity, this transformer steps down line voltage to the 24V signal required by thermostats, zone controls, and other low-voltage system components — ensuring safe, stable operation throughout the heating season.
Designed as a direct OEM replacement, the 240005330 maintains the electrical integrity your Utica-Dunkirk system was built around, eliminating guesswork and reducing installation time. Whether you’re restoring a system after a component failure or performing a planned maintenance upgrade, this transformer delivers the performance and reliability that HVAC professionals expect.
Key Specifications
- Primary Voltage: 120V AC
- Secondary Voltage: 24V AC
- VA Rating: 40VA
- OEM Part Number: 240005330
- Compatible Brand: Utica-Dunkirk
Features & Benefits
- Direct OEM replacement for Utica-Dunkirk heating systems
- Steps down 120V line voltage to 24V for control circuit compatibility
- 40VA capacity supports thermostats, zone valves, and low-voltage controls
- Ensures stable, consistent power delivery to sensitive control components
- Simplifies service calls with a drop-in replacement design
Application
This transformer is intended for use in Utica-Dunkirk boiler and hydronic heating systems requiring a 120V-to-24V step-down transformer rated at 40VA. Always verify compatibility with your specific model before installation. Installation should be performed by a qualified HVAC technician in accordance with local codes and the manufacturer’s guidelines.







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