Rheem-Ruud 46-23115-02 Transformer

The Rheem-Ruud 46-23115-02 Transformer is a heavy-duty, field-proven 40VA step-down transformer designed to provide reliable 24V control power for residential and light commercial HVAC systems. This OEM Rheem part is engineered to convert 208/230V primary voltage into the stable 24V secondary output required to drive thermostats, ignition control boards, and contactors. Built with a compact, foot-mount design and leads with stripped ends, this HVAC control transformer ensures a secure electrical connection within tight air handler or furnace vestibules. As a professional-grade 24V HVAC transformer, it maintains consistent voltage regulation and thermal stability to protect sensitive low-voltage electronics from fluctuations. This unit serves as a direct-fit replacement for older or failed 46-23120-02 and 46-25107-07 models, offering the specific impedance and power ratings required for Rheem, Ruud, and WeatherKing equipment. When diagnosing a loss of 24V power at the R terminal, this 40VA unit provides the necessary VA capacity to handle the inrush current of modern heating and cooling control circuits.

• OEM Compatibility: Exact replacement for Rheem-Ruud 46-23115-02, ensuring proper hole spacing and lead lengths.
• Dual Primary Taps: Supports both 208V and 230V configurations for versatile field applications.
• Class 2 Power Limiting: Designed to provide a safe, limited power output for low-voltage control circuits.
• Industrial Build Quality: Features durable windings and insulation to withstand the high ambient temperatures of furnace cabinets.
• Versatile Application: Compatible with various brands including Ruud, WeatherKing, and Thermal Zone air handlers and furnaces.

Can I use this to replace a 30VA transformer?
Yes, upgrading to a 40VA transformer is often recommended for systems with modern smart thermostats or multiple zone dampers that exceed the capacity of original 30VA units.

How do I wire this for 230V vs 208V?
Always refer to the wiring diagram on the equipment. Typically, the primary leads are color-coded to distinguish between the common, 208V, and 230V taps to ensure the secondary output remains at 24V.

Is there a secondary fuse included?
This is a standard 40VA step-down transformer. While it is power-limited, many technicians recommend installing an inline 3-amp blade fuse on the secondary 24V leg to protect the transformer from future shorts in the field wiring.

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.