Rectorseal MARS-12072 Dual Run Capacitor 35/5 Mfd 370V

Product Description

The RECTORSEAL MARS-12072 is a dual section oval run capacitor rated at 35/5 MFD and 370 volts, designed for continuous-duty motor operation in HVAC systems. Run capacitors maintain a steady phase shift in the motor winding circuit to keep compressors and fan motors running efficiently after startup. The dual section design allows a single unit to serve two separate capacitance requirements simultaneously, reducing component count in the panel. Constructed with an aluminum housing, this capacitor is built to handle the thermal demands of residential and light commercial air conditioning and heat pump equipment. HVAC technicians install this part as a direct replacement during compressor or condenser fan motor service calls.

This capacitor is suited for residential and light commercial HVAC applications where a dual run capacitor serves both the compressor and the condenser fan motor from a single component. The 370V rating is standard for single-phase equipment operating on 208-240V circuits. By using parallel connection combinations, technicians can also achieve additional microfarad ratings beyond the standard 35/5 MFD dual rating, making this a versatile stocking item for service vans and shop inventory. It is commonly installed in split-system air conditioners and heat pumps during seasonal maintenance or motor replacement work.

Key Features

• Dual section design serves both compressor and condenser fan motor from a single capacitor
• 35/5 MFD dual capacitance rating for standard single-phase HVAC motor loads
• 370V rating compatible with 208-240V single-phase residential systems
• Oval aluminum housing for compact fitment in standard condenser panel configurations
• Parallel connection combinations allow additional MFD ratings beyond the factory dual rating
• 3.75 inches in height for drop-in replacement in space-constrained equipment cabinets

Compatibility

Designed as an OEM-style replacement dual run capacitor for residential and light commercial single-phase HVAC systems requiring a 35/5 MFD, 370V oval capacitor.

Installation Notes

Dual run capacitors are installed by licensed HVAC technicians. Disconnect and lock out all power to the unit before removing the access panel or touching any capacitor terminals — capacitors retain a dangerous charge even after power is cut and must be safely discharged before handling. Confirm the replacement MFD and voltage ratings match the equipment nameplate or original capacitor specifications before installation. Follow applicable local electrical codes and manufacturer wiring diagrams when reconnecting terminals.

Technical Specifications

• Type: Dual Run Capacitor
• Capacitance: 35/5 MFD
• Voltage: 370V
• Shape: Oval
• Height: 3.75 inches
• Material: Aluminum

Standard Information

• Brand: RECTORSEAL
• Manufacturer Part Number: MARS-12072