Single Run Capacitor, Oval, 3/440 uF

Jard 3 µF Oval Run Capacitor – 440V, Non-PCB, Continuous Duty Rated

The Mars 12927 Jard Oval Run Capacitor provides continuous-duty performance for auxiliary single-phase motor applications. With a capacitance of 3 microfarads and a 440 VAC voltage rating, this unit is suitable for fractional-horsepower motors in air movement, ventilation, and small-scale HVAC systems where low-capacitance support is required.

This capacitor features a metallized polypropylene dielectric enclosed in an oil-free, aluminum oval case. It is designed to meet or exceed EIA-456-A standards and includes an internal pressure interrupter for added safety in the event of a fault. The compact form factor supports installation in space-restricted enclosures or cabinets where a round case is impractical.

Functional Highlights

• ✅ Capacitance: 3 µF ±6% tolerance for continuous motor run support.
• ✅ Voltage Rating: 440 VAC – For use in high-voltage residential or light commercial environments.
• ✅ Construction: Oval aluminum case with internal safety interrupter; non-PCB compliant.
• ✅ Thermal Rating: Operates within a temperature range of -40°C to +70°C.
• ✅ Terminal Configuration: Four male ¼-inch spade terminals for installation flexibility.

Technical Specifications

• Model: Mars 12927
• Capacitance: 3 µF
• Voltage: 440 VAC
• Frequency: 50/60 Hz
• Case Style: Oval aluminum, non-PCB
• Height: 2.125 inches
• Width: 2.056 inches
• Case Height: 1-5/8 inches

Installation Guidance

Professional installation is recommended to ensure compliance with local electrical codes and optimal system performance. Always isolate voltage and safely discharge the existing capacitor prior to removal. Match µF and VAC ratings to the OEM specifications, and use secure mounting brackets and proper terminal connectors for safe operation.

Field Use and Applications

This model is appropriate for blower motors, fan coils, ventilators, and small induction motors where a 3 µF capacitor is specified. The oval configuration accommodates limited-space installations in air handlers and compact motor enclosures. Its safety-interrupt feature offers fault protection under extreme electrical or mechanical stress.

Contractor Advantages

• ✅ Reliable Low-Capacitance Support: Ideal for secondary motor circuits or low-torque motor applications.
• ✅ HVAC Industry Standard: EIA-456-A compliant for quality assurance.
• ✅ Compact Footprint: Oval housing allows integration into tight-fitting systems or OEM brackets.
• ✅ Service-Ready: Standard terminals for quick replacement and field diagnostics.