Diversitech 4jr0540 Dual Run Capacitor 40+5 Mfd 440V

Product Description

The DIVERSITECH 4jr0540 is a dual-run capacitor designed for use in motor circuits found in HVAC equipment. It provides the continuous capacitance needed to keep compressor and fan motors running efficiently at rated load. Rated at 40 plus 5 microfarads (MFD) and 440 volts, this round metal capacitor handles dual-motor applications in a single compact housing measuring 2.5 inches in diameter and 2.5 inches in height. HVAC technicians install this type of capacitor when the original fails due to low capacitance, bulging, or visible oil leakage.

This capacitor is suited for residential and light commercial HVAC systems running both ducted and ductless configurations. The 40 MFD side typically serves the compressor motor while the 5 MFD side serves the condenser fan motor. It is installed inside the electrical compartment of the condensing unit and requires a licensed HVAC technician for safe service. The 440-volt rating makes it compatible with both 240-volt and 370-volt-rated systems, providing added flexibility in the field.

Key Features

• Dual capacitance rating of 40 plus 5 MFD supports compressor and fan motor in one unit
• 440-volt rating compatible with standard residential and light commercial condensing units
• Round metal housing provides durability and standard form factor for easy replacement
• Compact size at 2.5 inches by 2.5 inches fits most standard capacitor mounting brackets
• Suitable for both ducted and ductless HVAC system applications

Compatibility

Designed as an OEM-style replacement dual-run capacitor for residential and light commercial HVAC condensing units requiring a 40 plus 5 MFD, 440-volt round capacitor.

Installation Notes

Installation must be performed by a licensed HVAC technician. Before servicing, disconnect and lock out all power to the condensing unit and discharge the capacitor fully using an insulated discharge tool before handling, as capacitors can retain a dangerous charge after power is removed. Confirm the MFD rating and voltage rating match the equipment nameplate before installing. Follow all applicable local electrical codes and manufacturer wiring diagrams during replacement.