Run Start Capacitor, Round, 25/10 MFD, 440/370

Mars 12813 – Dual Motor Run Capacitor for HVAC Motor Systems

The Mars 12813 Dual Motor Run Capacitor is engineered to deliver continuous electrical support for HVAC systems requiring dual-capacitance operation. With a 25/10 microfarad (MFD) rating and 440V AC voltage capacity, this capacitor is suitable for condenser fan and compressor circuits using permanent split capacitor (PSC) motors.

Its dual-value configuration and compact cylindrical design allow it to service two motor windings simultaneously, making it well-suited for applications requiring component space optimization and stable motor operation in standard environmental conditions.

Professional-Grade Design Features

• ✅ Dual Capacitance – Combines 25 MFD and 10 MFD values to serve dual motor loads in one enclosure.
• ✅ 440V AC Voltage Rating – Suitable for systems with elevated line voltages and thermal cycling.
• ✅ Round Aluminum Canister – Durable sealed housing resists corrosion and withstands vibration.
• ✅ Hermetically Sealed – Internal dielectric materials are protected against moisture and contaminants.

Technical Specifications

• Model Number: Mars 12813
• Capacitance: 25/10 MFD (microfarads)
• Voltage Rating: 440V AC
• Configuration: Dual Motor Run Capacitor
• Case Style: Round

Installation Notes for Field Technicians

This capacitor should be installed by a qualified HVAC or electrical professional. Prior to installation, verify that system power is fully disconnected. Match both capacitance values and voltage rating to the original equipment specifications. Use a multimeter with capacitance test functionality to confirm proper operation before system re-energization.

• ???? Standard driver set for mounting bracket removal
• ???? Multimeter with MFD test capability
• ???? Personal protective equipment and compliance with local electrical codes

Application Use Cases

The Mars 12813 is typically used in split system air conditioners, heat pumps, and packaged rooftop units requiring a dual capacitor in one housing. It is an effective replacement for OEM parts within the same tolerance range and can be deployed in preventative maintenance or emergency field repair scenarios.

Key Benefits for Contracting Professionals

• ✅ Consolidated Design – Reduces the need for separate capacitors and wiring configurations.
• ✅ Voltage Stability – Maintains capacitance accuracy under load and during power fluctuations.
• ✅ Form Factor Efficiency – Compact size supports easy integration into tight control panels.
• ✅ Field-Tested Performance – Manufactured to align with HVAC industry reliability standards.

Summary for Service Applications

The Mars 12813 capacitor provides reliable dual-motor support in light to moderate HVAC system loads. Its performance characteristics are aligned with field requirements for system efficiency, space economy, and reduced failure risk under normal operating conditions. Designed for licensed professionals conducting routine replacements or urgent service interventions, it remains a dependable component in the contractor’s inventory.