Rectorseal M12217 Round Run Capacitor 30 Mfd 370V

Product Description

The RECTORSEAL M12217 is a 30 microfarad (MFD), 370-volt round run capacitor designed for use in single-phase motors found in HVAC equipment. Run capacitors maintain a continuous phase shift in the motor winding to keep the motor running efficiently after startup. This unit is housed in a compact round case measuring 1.75 inches in diameter and 3.875 inches in height, making it a practical fit for tight equipment compartments. HVAC technicians install this capacitor during routine maintenance or when a failed capacitor is confirmed by capacitance testing with a digital multimeter.

This capacitor is suited for residential and light commercial HVAC applications where a round-style, single-section run capacitor is required. Typical installations include condenser fan motors and compressor run circuits operating on 370-volt single-phase systems. The round form factor is one of the most common styles encountered in split-system air conditioners and heat pumps, making this a frequently needed service part on the truck.

Key Features

• 30 MFD capacitance rating for sustained motor run performance
• 370-volt AC rating suitable for standard single-phase HVAC motor circuits
• Round case design fits most standard capacitor brackets and mounting hardware
• Compact footprint: 1.75 inches diameter by 3.875 inches height
• Single-section construction simplifies diagnosis and replacement

Compatibility

Designed as an OEM-style replacement for single-phase HVAC motor run capacitor applications requiring a 30 MFD, 370-volt round capacitor.

Installation Notes

Run capacitor replacement is performed by licensed HVAC technicians. Disconnect and lock out power to the unit before opening the electrical compartment. Capacitors store a charge even after power is removed — discharge the capacitor safely using an insulated resistor or discharge tool before handling. Verify capacitance with a meter before and after installation to confirm the replacement resolves the fault.