Rectorseal m12758 Run Capacitor 70 Mfd 440V Round

Product Description

The RECTORSEAL m12758 is a round run capacitor rated at 70 microfarads (MFD) and 440 volts, designed to support motor starting and running in HVAC equipment. Run capacitors maintain the phase shift needed to keep single-phase motors operating efficiently after startup. This capacitor is sized for compressor or fan motor circuits where a 70 MFD rating is required. HVAC technicians install this type of component during routine capacitor replacement calls or as part of a no-cooling or no-heat service diagnosis. Its round form factor fits standard capacitor brackets found in most air handler and condensing unit cabinets.

This capacitor is suited for residential and light commercial HVAC applications, including split-system air conditioners, heat pumps, and package units. It is installed in the condensing unit or air handler control compartment to support compressor, condenser fan, or blower motor operation. The 440-volt rating provides a safety margin over the 370-volt systems common in residential equipment, making it a reliable cross-application replacement in the field.

Key Features

• 70 MFD capacitance for high-demand motor circuits
• 440-volt rating suitable for both 370V and 440V motor applications
• Round form factor fits standard HVAC capacitor mounting brackets
• Compact dimensions for installation in tight control compartments
• Single-section run capacitor for dedicated motor support

Compatibility

Designed as an OEM-style replacement run capacitor for residential and light commercial HVAC systems requiring a 70 MFD, 440-volt round capacitor.

Installation Notes

Run capacitors must be replaced by a licensed HVAC technician. Disconnect and lock out all power to the unit before opening the control compartment. Capacitors can retain a dangerous charge even after power is removed — discharge the capacitor safely using an insulated resistor or discharge tool before handling. Verify MFD rating and voltage rating match application requirements before installation.