Rheem/Ruud 43-25134-04 – PROTECH 10 MFD 370V Oval Run Capacitor
The PROTECH 43-25134-04 is a single-section motor run capacitor rated at 10 microfarads (MFD) and 370 VAC, designed for use in HVAC systems that utilize permanent split capacitor (PSC) motors. It features an oval aluminum case for compact placement in air handlers, fan coil units, or condensers where space constraints are a factor.
This model is an OEM-specified part for Rheem, Ruud, and WeatherKing equipment. It meets UL 810 safety standards and includes a pressure-sensitive interrupter for overpressure protection. Common applications include blower motors and other components requiring a 10 µF run capacitor.
Technical Specifications
Manufacturer: PROTECH
OEM Part Number: 43-25134-04
Capacitance: 10 µF ±6%
Voltage Rating: 370 VAC
Frequency: 50/60 Hz
Case Type: Oval aluminum
Terminal Type: ¼″ male quick-connect terminals
Dimensions: 2.88″ H x 2.16″ W x 1.31″ D
Safety Rating: UL 810 approved, 5000 AFC (Amp Fault Current)
Interrupter: Pressure-sensitive internal disconnect
Dielectric Fluid: Non-PCB
Application Overview
This capacitor is typically used in:
Indoor blower motors (furnaces or air handlers)
Outdoor fan motors in split systems
Other PSC motor applications requiring 10 µF at 370V
Installation should be performed using proper safety procedures, including power disconnection and capacitor discharge prior to removal or installation.
Contractor Notes
OEM design ensures compatibility with specified Rheem and Ruud models
Oval housing allows for better fit in control compartments with limited space
UL recognition and internal safety interrupter meet code requirements for residential HVAC systems
Proper capacitance is essential to maintain motor performance and prevent premature failure