Run Capacitor, Oval, 6 MFD, 440/370

Mars 12930 – 6 MFD Oval Motor Run Capacitor for Single-Phase Induction Motors

The Mars 12930 is a single-value motor run capacitor engineered for use in permanent split capacitor (PSC) single-phase motors. Rated at 6 microfarads (MFD) and 440/370V AC, this oval-profile component provides continuous-phase shifting for efficient motor operation in HVAC systems, refrigeration units, and other inductive load environments.

Constructed with metallized polypropylene film and housed in a corrosion-resistant aluminum canister, the Mars 12930 is suitable for applications where long-duty cycles, temperature variation, and mechanical vibration are expected. This unit is part of the JARD series of professional-grade capacitors manufactured by Mars.

Professional Features and Performance

• ✅ Stable Capacitance Output – 6 MFD rating supports steady torque delivery in fractional-horsepower motors.
• ✅ High Voltage Endurance – Rated for 440/370V AC to withstand overvoltage conditions and resist dielectric breakdown.
• ✅ Compact Oval Form – Space-efficient design for confined electrical enclosures and service panels.
• ✅ UL Recognized – Built to meet performance and safety standards relevant to the HVACR trade.

Technical Specifications

• Model: Mars 12930
• Capacitance: 6 MFD
• Voltage Rating: 440/370V AC
• Type: Motor Run Capacitor (PSC)
• Shape: Oval
• Series: JARD

Installation Guidance

This capacitor should be installed by qualified personnel trained in HVACR or electrical service work. Always isolate system power before servicing and discharge existing capacitors with an insulated tool. Match replacement specs to the OEM unit to ensure proper load matching and torque characteristics.

• ???? Tools: Standard hand tools for bracket removal and electrical connection
• ???? Testing: Use a multimeter capable of measuring microfarads
• ???? Safety: Wear appropriate PPE and follow applicable LOTO procedures

Capacitor terminals must be firmly seated and free of oxidation. If reusing spade terminals, verify tight fitment to prevent arcing or intermittent circuit loss under load.

Use Case Overview

The Mars 12930 is used in HVAC fan motors, blower motors, and refrigeration units where a low microfarad rating is required. Suitable for single-phase induction motors operating continuously, this capacitor maintains phase angle separation to optimize energy transfer and reduce motor heat generation.

Application Benefits

• ✅ Consistent Motor Operation – Helps maintain balanced current and voltage in PSC motors.
• ✅ Low Profile Oval Housing – Designed for use in equipment with limited mounting space.
• ✅ Long Service Life – Metallized film and oil-free design reduce failure risk over extended operating periods.
• ✅ Industry Standard Sizing – Compatible with most OEM brackets and mounting hardware.

Summary for HVAC and Electrical Contractors

The Mars 12930 motor run capacitor offers dependable support for continuous-duty motor applications in HVAC and refrigeration systems. Its robust construction and electrical stability make it a preferred choice for contractors requiring reliable performance in field replacements, system retrofits, and OEM-specified builds. For single-phase systems operating at 440V or below, this unit delivers precision capacitance and extended service life in demanding environments.