Single Run Capacitor, Round, 25/440 uF

HVAC Motor Support – Mars 12740 Jard 25 µF 440V Round Run Capacitor

The Mars 12740 Jard Run Capacitor is a single-value, oil-filled capacitor designed to deliver consistent performance in air conditioning, refrigeration, and forced-air systems. With a capacitance of 25 microfarads at 440 volts AC, it meets the electrical requirements for a range of PSC motor applications including blowers, condenser fans, and compressors requiring run support.

Built for Demanding Environments

Manufactured with a self-healing metallized polypropylene dielectric and an internal pressure interrupter, the 12740 provides protection against overload or end-of-life failure conditions. Its cylindrical aluminum can design is standard for round-style capacitor housings, and it operates reliably across a wide ambient temperature range.

Capacitor Specifications

• Capacitance: 25 µF (±6% tolerance)
• Voltage Rating: 440 VAC
• Frequency: 50/60 Hz
• Operating Temperature: -40°C to +70°C
• Enclosure: Round aluminum can with dual quick-connect terminals
• Interrupter: Built-in UL-recognized pressure-sensitive safety device
• Dielectric: Non-PCB metallized polypropylene

Installation Guidance

Field installation should be performed by trained HVAC technicians to ensure safety and compliance with code. Capacitor replacement involves identifying and matching µF and voltage ratings and confirming terminal orientation. Always de-energize equipment and discharge capacitors using a resistor before handling or installation.

Contractor Considerations

• ✅ UL 810 Compliance – Rated and tested to applicable safety standards with 10,000 AFC capability.
• ✅ Extended Service Life – Designed to operate over long duty cycles with stable capacitance retention.
• ✅ HVAC System Compatibility – Applicable to a wide range of OEM and aftermarket system requirements where 25 µF, 440V components are specified.

Usage Notes

This component is suitable for replacement in permanent split capacitor motor circuits that require a round 25 µF run capacitor at 440 VAC. Substitution with non-matching µF ratings may result in reduced motor efficiency or failure.