Rectorseal m12781 Dual Round Motor Run Capacitor 30/5 Mfd

Product Description

The RECTORSEAL m12781 is a dual-section round motor run capacitor rated at 30/5 microfarads (MFD) and 440 VAC at 50/60 Hz. It is designed to support the start and run performance of split-phase motors in residential and light commercial HVAC systems. The aluminum case construction provides durable, corrosion-resistant housing suitable for condenser unit applications. Licensed HVAC technicians install this part as a direct replacement when diagnosing weak or failed capacitors causing compressor or fan motor issues.

This capacitor is commonly used in split-system air conditioners and heat pumps where both the compressor and the condenser fan motor require a single dual-section capacitor. Its round form factor and dual-terminal configuration make it a standard fitment in a wide range of condensing unit control compartments. The 440 VAC rating provides a safety margin above the typical 370 VAC operating environment, making it a reliable cross-replacement option in the field.

Key Features

• Dual-section design supports two motors from a single capacitor body — 30 MFD for compressor, 5 MFD for fan
• 440 VAC rating compatible with both 370 V and 440 V applications
• 50/60 Hz frequency rating suits standard North American and international power supplies
• Round aluminum case provides compact fitment in standard capacitor brackets
• 2 inches diameter x 3.625 inches height for straightforward dimensional matching during replacement

Compatibility

Designed as an OEM-style replacement motor run capacitor for residential and light commercial split-system air conditioners and heat pumps requiring a dual-section round capacitor rated at 30/5 MFD and 440 VAC.

Installation Notes

Installation of this capacitor should be performed by a licensed HVAC technician. Always disconnect and lock out power to the unit before opening the control compartment and discharge the existing capacitor using an insulated resistor before handling. Verify the MFD ratings and voltage rating of the original capacitor match this replacement before wiring. Capacitors store a lethal charge even after power is removed.