Run Capacitor, Oval, 80 MFD, 440/370

Jard 80 µF Oval Motor Run Capacitor – 370/440V, Continuous Duty Rated

The Mars 12840 Jard Motor Run Capacitor is engineered for single-phase induction motors requiring sustained capacitance during operation. With an 80 µF rating and a dual voltage specification of 370/440 VAC, this oval-shaped capacitor is designed for continuous-duty service in HVAC systems, refrigeration units, and other industrial motor-driven equipment.

Constructed with metallized polypropylene film and enclosed in a hermetically sealed aluminum housing, the 12840 capacitor offers high dielectric stability and mechanical durability. It is a standard-fit replacement in applications where consistent motor torque and startup efficiency are critical to operational reliability.

Application Advantages

• ✅ Capacitance Rating: 80 microfarads ±6% tolerance for accurate motor support.
• ✅ Voltage Range: Dual-rated for 370/440 VAC systems; compatible with most HVAC and refrigeration platforms.
• ✅ Construction: Oval aluminum case with corrosion-resistant finish; non-PCB, oil-free design.
• ✅ Temperature Stability: Operates from -40°C to +70°C for use in rooftop units and ambient-exposed installations.
• ✅ Physical Profile: Oval form factor fits space-constrained cabinets or OEM-specific enclosures.

Technical Specifications

• Model: Mars 12840
• Capacitance: 80 µF ±6%
• Voltage: 370/440 VAC
• Frequency: 50/60 Hz
• Case Type: Oval aluminum
• Terminals: ¼-inch quick-connect spade terminals

Installation Notes

Installation should be completed by licensed HVAC personnel. Prior to service, the circuit must be de-energized and the existing capacitor properly discharged. Always verify system compatibility by matching voltage and microfarad specifications. Use a multimeter to confirm terminal continuity post-installation, and ensure the capacitor is mounted securely within OEM or aftermarket brackets.

Use Case and Performance Profile

This component is intended for use in single-motor applications such as condenser fan motors or blower assemblies. Its 80 µF capacity provides a stable current path for motors requiring high torque during startup and reliable operation throughout duty cycles. The oval configuration supports installation in units with limited horizontal or vertical clearance.

Product Features

• ✅ Continuous Duty Rated: Engineered for long-term use in high-cycle environments.
• ✅ High Capacitance Load Support: Maintains torque and motor efficiency during peak operation.
• ✅ Form Factor Versatility: Oval shape accommodates cabinets where round capacitors are not feasible.
• ✅ Reliable Performance: Field-tested for HVAC and refrigeration motor support applications.