Dual Capacitor, Round, 40/3/370 uF

Rheem/Ruud 43-25133-04 – Dual Motor Run Capacitor, 40/3 MFD, 370V, Round The 43-25133-04 is a dual motor run capacitor used in HVAC systems manufactured by Rheem, Ruud, and WeatherKing. It is rated for 40 microfarads (µF) on the compressor side and 3 µF for the fan motor, operating at 370 VAC. This unit is designed to support permanent split capacitor (PSC) motors and is typically found in split-system condensers and packaged units. This capacitor features a round aluminum case and a built-in pressure-sensitive interrupter for overpressure protection. It is UL 810 compliant and rated for up to 5000 AFC (Amp Fault Current), meeting industry requirements for safety and performance in motor-driven applications. Product Specifications Manufacturer: Rheem Manufacturing OEM Part Number: 43-25133-04 Capacitance Values: 40/3 µF (dual section) Voltage Rating: 370 VAC Frequency: 50/60 Hz Case Type: Round aluminum canister Diameter: 2.12 inches Height: 4 inches Terminals: ¼" male quick-connect spade terminals Safety Features: Pressure-sensitive interrupter Agency Certification: UL 810 (5000 AFC rating) Environmental Compliance: Non-PCB Application Information This dual run capacitor is used to support both the compressor and the condenser fan motor in HVAC units that utilize PSC motors. It is commonly installed in: Rheem and Ruud split systems WeatherKing outdoor units Other HVAC systems requiring a dual 40/3 µF, 370V capacitor The capacitor helps maintain system efficiency and extends motor service life by improving torque and voltage stability during operation. Installation Guidelines Ensure all power is disconnected and residual voltage is discharged before installation Verify capacitor ratings match the equipment’s nameplate requirements Connect terminals per system schematic using insulated female spade connectors Mount securely within the system’s electrical compartment using approved brackets or clamps While the unit is designed for direct replacement, installation by a licensed HVAC technician is advised to ensure compliance with equipment specifications and local code. Notes for Contractors Dual capacitor combines two capacitance values in a single housing, reducing wiring and space requirements UL 810 listing ensures the component meets current industry safety and performance standards OEM specification ensures correct fit and electrical match for Rheem and Ruud systems Suitable as a direct replacement for failed capacitors with identical ratings