Single Run Capacitor, Oval, 15/440 uF

Precision Performance – Jard 15 MFD 440V Oval Motor Run Capacitor for HVAC Applications

The Mars 12934 – Jard 15 MFD Oval Run Capacitor is engineered to support continuous-duty HVAC motors requiring stable, efficient capacitance. Designed to meet the demands of condenser fan and blower motor applications, this oil-filled, non-PCB capacitor delivers high-reliability performance in both residential and light commercial systems.

This model features a 15 microfarad capacitance at 440 volts AC and is manufactured with high-grade aluminum housing and an integrated safety pressure interrupter. The oval shape allows installation in compact cabinet configurations, and the unit is suitable for systems operating at 50/60 Hz. It is UL 810 recognized and RoHS compliant, ensuring compliance with performance and environmental standards.

Product Advantages for Field Use

• ✅ Capacitance: 15 µF ±6% for steady power factor correction
• ✅ Voltage: 440 VAC rating accommodates high-load conditions
• ✅ Shape: Oval profile for low-clearance enclosures
• ✅ Dielectric Fluid: Oil-filled; environmentally safe, non-PCB
• ✅ Temperature Rating: Operates from -40°C to +70°C
• ✅ Terminals: Dual quick-connect blade terminals (4 total) for ease of wiring
• ✅ Interrupt Protection: Built-in pressure-sensitive interrupter per UL 810

Technical Dimensions

• Height: Approximately 3 inches (case height)
• Case Size: 2.5 in. height × 2.056 in. width (nominal)
• Frequency: 50/60 Hz
• Certification: UL 810, RoHS compliant

Installation Guidance

Although straightforward in form, replacement of a run capacitor must follow all applicable electrical codes and safety protocols. Ensure correct discharge of the old unit, and confirm terminal layout matches existing specifications. Due to the critical role this component plays in motor operation, professional HVAC technicians are best equipped to confirm proper microfarad and voltage compatibility before installation.

Professional Considerations

Contractor Notes: The 12934 is a reliable service replacement part for PSC (permanent split capacitor) motors requiring single-value run capacitors. Its thermal stability and oval construction make it a preferred option for vertical or constrained-mount locations within condensers and air handler compartments.

OEM Interchange: Suitable for replacement of various legacy capacitors with identical electrical and dimensional specs. Always verify capacitance and voltage alignment to the existing unit before use.

System Benefits

• ✅ Thermal Endurance: Suitable for continuous-duty cycles in elevated temperature conditions
• ✅ Safety Built-In: Pressure interrupter prevents catastrophic failure under overload
• ✅ Long-Term Performance: Designed for extended motor life and reduced service intervals

Optimize System Performance with Trusted Components

The Mars 12934 – Jard 15 MFD 440V Oval Capacitor supports efficient HVAC motor operation by delivering stable capacitance and high electrical durability. For contractors seeking a performance-proven, service-ready capacitor solution, this component checks all the boxes for reliability and code compliance.