Dual Capacitor, Round, 40/3/440 uF

Rheem/RUUD 43-25133-13 – OEM Dual Motor Run Capacitor, 40/3 MFD, 440V AC

The 43-25133-13 is an original equipment dual motor run capacitor manufactured for Rheem, RUUD, and WeatherKing HVAC systems. This capacitor supports the simultaneous operation of both compressor and condenser fan motors in PSC (permanent split capacitor) applications. With a 40/3 microfarad (MFD) rating and a 440V AC voltage capacity, it ensures stable phase-shifting power in high-cycle, high-demand environments.

Engineered to match OEM electrical and dimensional specifications, the 43-25133-13 allows for direct system replacement without modification. It is UL 810 rated and tested to 5000 AFC for safe installation and reliable field performance.

Component Features

• ✅ Capacitance Values: 40 MFD (compressor), 3 MFD (fan motor)
• ✅ Voltage Rating: 440V AC – Suitable for residential and light commercial systems operating in high-temperature zones
• ✅ Housing Type: Round aluminum case, hermetically sealed with internal pressure interrupter
• ✅ Tested to: UL 810 safety standard, 5000 AFC short-circuit rating
• ✅ OEM Fit: Specified for Rheem/RUUD/WeatherKing condenser and air handler units requiring this dual-rating configuration

Technical Specifications

• Manufacturer: Rheem / RUUD (PROTECH)
• Model Number: 43-25133-13
• Capacitance: 40/3 MFD
• Voltage: 440 VAC
• Case Shape: Round
• Dimensions: Diameter: 2.62" | Height: 3.75"
• Certifications: UL 810

Installation Overview

This capacitor must be installed by qualified HVAC personnel. Ensure power is fully disconnected and any residual voltage discharged from the old capacitor before servicing. Confirm the replacement matches original capacitance, voltage, and form factor. Secure terminal connections tightly and verify mounting bracket stability to minimize vibration stress.

• ???? Tools: Multimeter (MFD capable), insulated screwdriver, nut driver
• ???? Safety: Comply with all LOTO (Lockout/Tagout) and PPE guidelines during replacement

System Compatibility and Use Cases

The 43-25133-13 is an OEM replacement capacitor used in split-system air conditioners and packaged units built by Rheem, RUUD, and WeatherKing. It supports dual-motor operation for systems utilizing a combined run capacitor. Commonly replaced during seasonal startup or service calls where the original component has experienced capacitance drift or failure due to high ambient temperatures and extended duty cycles.

Advantages for HVAC Professionals

• ✅ OEM-Matched Electrical Performance – Ensures consistent motor startup and torque output without rewiring or adaptation
• ✅ Exact Physical Fit – Drop-in replacement using existing mounting hardware and terminal leads
• ✅ Certified for Safety – UL 810 compliance with integrated pressure interrupter
• ✅ Reduces Service Time – Reliable field replacement without need for compatibility adjustments

Professional Summary

The Rheem/RUUD 43-25133-13 is a dual-rated capacitor built for contractor use in systems requiring 40/3 MFD at 440V. Designed to meet OEM fitment and dielectric stability expectations, it is ideal for direct replacement in Rheem, RUUD, and WeatherKing equipment. With UL certification and a durable sealed case, this component is a field-proven solution for maintaining motor efficiency and preventing equipment downtime in PSC motor-based HVAC systems.