Rheem-Ruud 46-22863-04 Transformer

The Rheem-Ruud 46-22863-04 Transformer is a critical HVAC 120V to 24V step-down transformer designed for reliable control circuit power in furnace and air handler applications. As a 40VA-rated component, it provides the necessary current to drive low-voltage thermostats, fan centers, and ignition modules without overloading the system. This OEM Rheem furnace transformer features a primary voltage input of 120V and a secondary output of 24V AC, ensuring seamless HVAC low voltage control. Built to Class 2 standards, it includes integrated overcurrent protection via a primary or secondary fuse interface (typically requiring a 2A fuse) to safeguard against downstream shorts. Contractors often specify the 46-22863-04 for its precise 2-3/16 x 1-3/4 four-hole mounting footprint, which allows for a direct drop-in replacement on R96, RRG, and RGL series units. When diagnosing furnace transformer failure, this part provides a stabilized electrical connection using industry-standard insulated female quick-connect leads.

• Precise Electrical Conversion: Stepping 120V down to 24V ensures your control board and gas valves operate within manufacturer-specified tolerances.
• Rugged 40VA Capacity: Sufficient power overhead to handle modern communicative thermostats and multi-stage relays.
• Direct OEM Fitment: Eliminates the need for field modifications or drilling, thanks to standardized Rheem-Ruud mounting dimensions.
• Circuit Protection: Engineered to integrate with external fuses, preventing expensive damage to the primary controller if a short occurs in the 24V field wiring.

Is this transformer compatible with 208V or 240V systems?
No, this specific model is designed exclusively for 120V primary input. For higher voltage applications, verify the part number on your existing unit, as using 120V components on 240V lines will result in immediate failure.

What is the typical indicator that this part needs replacement?
A total loss of 24V power at the control board often points to a blown transformer. Check the secondary output with a multimeter; if you have 120V on the primary but 0V on the secondary, the internal winding or fuse has likely failed.

Which fuse should be used with the 46-22863-04?
Technical specifications typically recommend a 2A external fuse to protect the 40VA secondary winding from overcurrent conditions effectively.

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.