
Utica-Dunkirk 240005330 Transformer
The Utica-Dunkirk 240005330 Transformer is a heavy-duty 40VA step-down transformer engineered specifically for high-efficiency hydronic systems. This OEM replacement part is a critical component for Utica UB90 and Dunkirk Q90 series boilers, including models 50, 75, and 100. It features a reliable 120V primary to 24V secondary configuration, providing the stable 24VAC control voltage necessary for furnace control boards, gas valve solenoids, and zone dampers without the risk of voltage fluctuations that can trip sensitive electronics.
Designed for professional-grade electrical reliability, this 40 VA furnace transformer is built to handle the inductive loads common in residential heating systems. The 240005330 replaces various ECR International part numbers, ensuring a precise drop-in fit that maintains system certification and operational safety. Its compact, corrosion-resistant design ensures ease of mounting within tight vestibule spaces, making it the preferred choice for technicians troubleshooting HVAC low voltage problems or replacing blown boiler transformers caused by external shorts or power surges.
Key Benefits:
- Precise Voltage Conversion: Maintains a 120V to 24V step-down to ensure consistent power to low voltage control circuits and ignition modules.
- OEM Compatibility: Guaranteed fit for Utica-Dunkirk UBQ90, UB90-50/75/100, and Q90-50/75/100 series boilers.
- Industrial-Grade Build: Features a 40VA power rating capable of supporting standard 24V accessories like thermostats and relays.
- Compact Footprint: Engineered for easy integration into existing boiler electrical panels and tight junction boxes.
- Safety Compliance: Designed by ECR International to meet specific hydronic heating system electrical requirements and sound quality standards.
Common Questions:
How do I know if my 240005330 transformer has failed?
Technicians typically diagnose a failure when the boiler shows no control power. Check for 120VAC at the primary side; if you have input voltage but 0VAC at the secondary terminals, the internal windings are likely open and the unit requires replacement.
Can this 40VA transformer be used on other boiler brands?
While it follows standard voltage specifications, this specific part is optimized for the Utica and Dunkirk Q90/UB90 platforms. Always verify the mounting footprint and terminal configuration before attempting a cross-brand installation.
Will a 40VA rating handle additional zone valves?
A 40VA transformer typically supports the boiler's internal controls and one or two valves. If you are running multiple zone valves or high-draw 24V accessories, you may need an auxiliary transformer to prevent overloading this primary control unit.
This item is not eligible for free shipping.
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: $19.54
-65%$19.54
$6.84Utica-Dunkirk 240005330 Transformer
The Utica-Dunkirk 240005330 Transformer is a heavy-duty 40VA step-down transformer engineered specifically for high-efficiency hydronic systems. This OEM replacement part is a critical component for Utica UB90 and Dunkirk Q90 series boilers, including models 50, 75, and 100. It features a reliable 120V primary to 24V secondary configuration, providing the stable 24VAC control voltage necessary for furnace control boards, gas valve solenoids, and zone dampers without the risk of voltage fluctuations that can trip sensitive electronics.
Designed for professional-grade electrical reliability, this 40 VA furnace transformer is built to handle the inductive loads common in residential heating systems. The 240005330 replaces various ECR International part numbers, ensuring a precise drop-in fit that maintains system certification and operational safety. Its compact, corrosion-resistant design ensures ease of mounting within tight vestibule spaces, making it the preferred choice for technicians troubleshooting HVAC low voltage problems or replacing blown boiler transformers caused by external shorts or power surges.
Key Benefits:
- Precise Voltage Conversion: Maintains a 120V to 24V step-down to ensure consistent power to low voltage control circuits and ignition modules.
- OEM Compatibility: Guaranteed fit for Utica-Dunkirk UBQ90, UB90-50/75/100, and Q90-50/75/100 series boilers.
- Industrial-Grade Build: Features a 40VA power rating capable of supporting standard 24V accessories like thermostats and relays.
- Compact Footprint: Engineered for easy integration into existing boiler electrical panels and tight junction boxes.
- Safety Compliance: Designed by ECR International to meet specific hydronic heating system electrical requirements and sound quality standards.
Common Questions:
How do I know if my 240005330 transformer has failed?
Technicians typically diagnose a failure when the boiler shows no control power. Check for 120VAC at the primary side; if you have input voltage but 0VAC at the secondary terminals, the internal windings are likely open and the unit requires replacement.
Can this 40VA transformer be used on other boiler brands?
While it follows standard voltage specifications, this specific part is optimized for the Utica and Dunkirk Q90/UB90 platforms. Always verify the mounting footprint and terminal configuration before attempting a cross-brand installation.
Will a 40VA rating handle additional zone valves?
A 40VA transformer typically supports the boiler's internal controls and one or two valves. If you are running multiple zone valves or high-draw 24V accessories, you may need an auxiliary transformer to prevent overloading this primary control unit.
This item is not eligible for free shipping.
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.
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Description
The Utica-Dunkirk 240005330 Transformer is a heavy-duty 40VA step-down transformer engineered specifically for high-efficiency hydronic systems. This OEM replacement part is a critical component for Utica UB90 and Dunkirk Q90 series boilers, including models 50, 75, and 100. It features a reliable 120V primary to 24V secondary configuration, providing the stable 24VAC control voltage necessary for furnace control boards, gas valve solenoids, and zone dampers without the risk of voltage fluctuations that can trip sensitive electronics.
Designed for professional-grade electrical reliability, this 40 VA furnace transformer is built to handle the inductive loads common in residential heating systems. The 240005330 replaces various ECR International part numbers, ensuring a precise drop-in fit that maintains system certification and operational safety. Its compact, corrosion-resistant design ensures ease of mounting within tight vestibule spaces, making it the preferred choice for technicians troubleshooting HVAC low voltage problems or replacing blown boiler transformers caused by external shorts or power surges.
Key Benefits:
- Precise Voltage Conversion: Maintains a 120V to 24V step-down to ensure consistent power to low voltage control circuits and ignition modules.
- OEM Compatibility: Guaranteed fit for Utica-Dunkirk UBQ90, UB90-50/75/100, and Q90-50/75/100 series boilers.
- Industrial-Grade Build: Features a 40VA power rating capable of supporting standard 24V accessories like thermostats and relays.
- Compact Footprint: Engineered for easy integration into existing boiler electrical panels and tight junction boxes.
- Safety Compliance: Designed by ECR International to meet specific hydronic heating system electrical requirements and sound quality standards.
Common Questions:
How do I know if my 240005330 transformer has failed?
Technicians typically diagnose a failure when the boiler shows no control power. Check for 120VAC at the primary side; if you have input voltage but 0VAC at the secondary terminals, the internal windings are likely open and the unit requires replacement.
Can this 40VA transformer be used on other boiler brands?
While it follows standard voltage specifications, this specific part is optimized for the Utica and Dunkirk Q90/UB90 platforms. Always verify the mounting footprint and terminal configuration before attempting a cross-brand installation.
Will a 40VA rating handle additional zone valves?
A 40VA transformer typically supports the boiler's internal controls and one or two valves. If you are running multiple zone valves or high-draw 24V accessories, you may need an auxiliary transformer to prevent overloading this primary control unit.
This item is not eligible for free shipping.
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.












