
Hartland Controls CAP-45/5/440 Run Capacitor
The Hartland Controls CAP-45/5/440 Run Capacitor is a heavy-duty, dual run capacitor designed for high-demand HVAC/R applications. Engineered to support both the compressor (45 MFD) and the condenser fan motor (5 MFD), this 440V oval capacitor is a versatile solution for contractors, as it is also backward compatible with 370V systems. Built with metallized polypropylene film and housed in a leak-proof aluminum casing, it maintains stable capacitance even in high-ambient environments. The unit features standard 1/4-inch quick-connect terminals for efficient field replacement. With a 10,000 AFC safety pressure switch and a temperature rating of -40°C to 70°C, it is designed to mitigate motor overheating and provide reliable phase shift for optimal induction motor torque. Integrating this OEM-quality run capacitor ensures proper microfarad (MFD) delivery to critical system components, preventing premature motor failure and compressor stalling during peak summer cycles.
Key Benefits
- Dual-Rated Performance: Manages both the compressor and fan motor with a combined 45+5 microfarad output.
- Universal Voltage Compatibility: Rated for 440VAC, making it a suitable cross-reference for 370V and 440V applications.
- Industrial Construction: Features UL 810 recognized internal protection and an oil-filled aluminum heat-dissipating shell.
- Reliable Starting Torque: Prevents motor "humming" and helps older compressors turn over under high head pressure.
Common Questions
Can I use an oval capacitor to replace a round one?
Yes, as long as the MFD and voltage ratings match or exceed the original part. You may need to use a different mounting strap to secure the oval run capacitor in the cabinet.
Why is my AC compressor humming but not starting?
A weakened or "blown" 45/5 MFD capacitor is often the culprit. If the capacitance drops below the ±3% tolerance, the motor cannot generate the phase shift required to start.
Is 440V better than 370V?
In a repair scenario, a 440V capacitor is always a safer professional choice. It can handle higher electrical stress than a 370V unit and provides increased durability during voltage spikes.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $19.25
-65%$19.25
$6.74Hartland Controls CAP-45/5/440 Run Capacitor
The Hartland Controls CAP-45/5/440 Run Capacitor is a heavy-duty, dual run capacitor designed for high-demand HVAC/R applications. Engineered to support both the compressor (45 MFD) and the condenser fan motor (5 MFD), this 440V oval capacitor is a versatile solution for contractors, as it is also backward compatible with 370V systems. Built with metallized polypropylene film and housed in a leak-proof aluminum casing, it maintains stable capacitance even in high-ambient environments. The unit features standard 1/4-inch quick-connect terminals for efficient field replacement. With a 10,000 AFC safety pressure switch and a temperature rating of -40°C to 70°C, it is designed to mitigate motor overheating and provide reliable phase shift for optimal induction motor torque. Integrating this OEM-quality run capacitor ensures proper microfarad (MFD) delivery to critical system components, preventing premature motor failure and compressor stalling during peak summer cycles.
Key Benefits
- Dual-Rated Performance: Manages both the compressor and fan motor with a combined 45+5 microfarad output.
- Universal Voltage Compatibility: Rated for 440VAC, making it a suitable cross-reference for 370V and 440V applications.
- Industrial Construction: Features UL 810 recognized internal protection and an oil-filled aluminum heat-dissipating shell.
- Reliable Starting Torque: Prevents motor "humming" and helps older compressors turn over under high head pressure.
Common Questions
Can I use an oval capacitor to replace a round one?
Yes, as long as the MFD and voltage ratings match or exceed the original part. You may need to use a different mounting strap to secure the oval run capacitor in the cabinet.
Why is my AC compressor humming but not starting?
A weakened or "blown" 45/5 MFD capacitor is often the culprit. If the capacitance drops below the ±3% tolerance, the motor cannot generate the phase shift required to start.
Is 440V better than 370V?
In a repair scenario, a 440V capacitor is always a safer professional choice. It can handle higher electrical stress than a 370V unit and provides increased durability during voltage spikes.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Hartland Controls CAP-45/5/440 Run Capacitor is a heavy-duty, dual run capacitor designed for high-demand HVAC/R applications. Engineered to support both the compressor (45 MFD) and the condenser fan motor (5 MFD), this 440V oval capacitor is a versatile solution for contractors, as it is also backward compatible with 370V systems. Built with metallized polypropylene film and housed in a leak-proof aluminum casing, it maintains stable capacitance even in high-ambient environments. The unit features standard 1/4-inch quick-connect terminals for efficient field replacement. With a 10,000 AFC safety pressure switch and a temperature rating of -40°C to 70°C, it is designed to mitigate motor overheating and provide reliable phase shift for optimal induction motor torque. Integrating this OEM-quality run capacitor ensures proper microfarad (MFD) delivery to critical system components, preventing premature motor failure and compressor stalling during peak summer cycles.
Key Benefits
- Dual-Rated Performance: Manages both the compressor and fan motor with a combined 45+5 microfarad output.
- Universal Voltage Compatibility: Rated for 440VAC, making it a suitable cross-reference for 370V and 440V applications.
- Industrial Construction: Features UL 810 recognized internal protection and an oil-filled aluminum heat-dissipating shell.
- Reliable Starting Torque: Prevents motor "humming" and helps older compressors turn over under high head pressure.
Common Questions
Can I use an oval capacitor to replace a round one?
Yes, as long as the MFD and voltage ratings match or exceed the original part. You may need to use a different mounting strap to secure the oval run capacitor in the cabinet.
Why is my AC compressor humming but not starting?
A weakened or "blown" 45/5 MFD capacitor is often the culprit. If the capacitance drops below the ±3% tolerance, the motor cannot generate the phase shift required to start.
Is 440V better than 370V?
In a repair scenario, a 440V capacitor is always a safer professional choice. It can handle higher electrical stress than a 370V unit and provides increased durability during voltage spikes.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.












