Single Run Capacitor, Oval, 20/440 uF

Contractor-Grade Component – Jard 20 MFD 440V Oval Run Capacitor for HVAC Systems

The Mars 12937 – Jard 20 MFD Oval Run Capacitor is a precision-matched component engineered for continuous-duty motor applications in HVAC equipment. Built with long-life materials and tested to industry standards, this capacitor ensures stable microfarad performance and voltage endurance in high-load environments.

Designed for use in permanent split capacitor (PSC) motors, this capacitor supports reliable operation of condenser fan motors, blower assemblies, and other single-phase applications across residential and light commercial systems. Its oval profile allows for tight-spot installation, with heavy-duty construction that withstands demanding field conditions.

Performance Attributes

• ✅ Capacitance: 20 µF ±6% tolerance
• ✅ Rated Voltage: 440 VAC, for higher-voltage motor loads
• ✅ Dielectric Type: Oil-filled, hermetically sealed
• ✅ Construction: Drawn aluminum case with plastic top for terminal insulation
• ✅ Safety Feature: Integrated pressure-sensitive interrupter compliant with UL 810
• ✅ Design: Oval case form for installations where round capacitors are not feasible

Technical Specifications

• Voltage Rating: 440V AC
• Capacitance: 20 microfarads
• Frequency: 50/60 Hz
• Operating Temp Range: -40°C to +70°C
• Dimensions: Approx. 4" height × 2.5" width × 2.056" depth
• Terminal Configuration: Dual quick-connect spade terminals (standard blade)

Installation Considerations

The Mars 12937 is designed for straightforward replacement in oval-style capacitor housings. It is essential to match capacitance and voltage values with the original equipment manufacturer’s specifications. A proper discharge of the old unit and secure electrical connection of the new capacitor should be performed in accordance with local code requirements and best practices. Professional installation is recommended to ensure proper operation and electrical safety.

Field Applications

• ✅ HVAC Fan and Blower Motors
• ✅ Air Handler Units
• ✅ Condenser Fan Circuits
• ✅ Light Commercial Motor Control

Built for Demanding Installations

This capacitor is intended for use in environments where thermal performance and operational reliability are critical. The physical interrupter offers added protection in the event of internal pressure build-up, while the non-PCB oil dielectric supports a safer and environmentally compliant footprint.

Summary

The Jard 20 MFD 440V Oval Run Capacitor (Mars 12937) offers dependable support for PSC motor applications in HVAC systems. It combines tested safety features with tight-tolerance capacitance ratings and a rugged build suitable for high-cycle environments. This capacitor is a trusted choice for contractors seeking proven performance in every install.