Single Run Capacitor, Oval, 35/440 uF

Jard 35 MFD 440V Oval Run Capacitor – Engineered for Consistent HVAC Motor Operation

The Mars 12943 – Jard 35 MFD Oval Run Capacitor is designed to deliver reliable continuous-duty support for permanent split capacitor (PSC) motors in HVAC systems. This component ensures stable operation across a range of applications, including residential and light commercial air conditioning and ventilation systems where high-performance capacitors are essential to system integrity.

Constructed with a non-PCB oil-filled dielectric and protected by an internal pressure interrupter, this oval run capacitor maintains safety while delivering consistent electrical performance. Its compact aluminum case allows for efficient installation in space-constrained units.

Performance Highlights

• ✅ Rated Capacitance: 35 microfarads (µF), ±6% tolerance
• ✅ Voltage Rating: 440 VAC – suitable for standard and elevated line voltage systems
• ✅ Design: Hermetically sealed oval aluminum case with 1.25" center spacing
• ✅ Interrupter: UL-recognized pressure-sensitive interrupter for thermal overload protection
• ✅ Dielectric: Oil-filled, non-PCB compound

Technical Specifications

• Frequency: 50/60 Hz
• Temperature Range: -40°C to +70°C
• Case Dimensions: Approx. 3.5 inches height × 2.806 inches width
• Terminal Configuration: 4 quick-connect terminals (2 per pole)
• Agency Compliance: UL 810 Recognized

Installation and Field Application

This capacitor is field-ready and suited for both direct OEM replacements and aftermarket service jobs. It is important to match capacitance and voltage specifications during system servicing. Installation must be performed with the system power off and all terminals verified using a multimeter prior to connection.

While installation may be mechanically simple, contractors should observe electrical code compliance and proper torqueing of terminals. Routine testing of start/run circuits prior to capacitor replacement is strongly recommended to prevent premature failure of newly installed components.

Professional Considerations

For HVAC Contractors:

Jard capacitors such as the 12943 model are widely used in service trucks due to their reliability and compliance with industry standards. The pressure interrupter and tested dielectric design make them a preferred choice for high-volume maintenance operations and warranty work. The consistent lead spacing and labeling allow for quick identification and installation during tight service calls.

Application Environments:

• ✅ Packaged rooftop A/C units
• ✅ Residential condenser fan motors
• ✅ Blower assemblies in air handlers
• ✅ Light commercial HVAC equipment

Why Jard?

Manufactured by Mars, Jard capacitors offer broad compatibility across multiple motor manufacturers and are known for consistent microfarad performance, secure terminal construction, and durability under thermal cycling. With a full range of MFD ratings available, Jard capacitors are trusted by HVAC professionals across the industry for both routine service and emergency replacement.

Summary

The Jard 35 MFD 440V Oval Run Capacitor (Mars 12943) is a dependable, UL-recognized component for PSC motor circuits in HVAC systems. Its rugged aluminum construction, thermal protection, and standard terminal layout make it a go-to choice for contractors who need reliable run capacitors in the field. Designed for efficiency, safety, and longevity—this is a workhorse capacitor built to meet jobsite expectations.