Hartland Controls CAP-7.5/440R Run Capacitor

The Hartland Controls CAP-7.5/440R is a heavy-duty 7.5 MFD 440V round run capacitor engineered for continuous duty in HVACR motor applications. Designed to withstand the rigorous demands of condenser fan motors and small compressor circuits, this 7.5 microfarad run capacitor features a dual-voltage rating, making it a reliable 370/440 VAC replacement for standard field service. Built with high-grade metallized polypropylene film and housed in a rugged aluminum casing, it utilizes a non-PCB biodegradable oil for superior heat dissipation. The CAP-7.5/440R is rated for an operating temperature range of -40°C to +70°C and includes a 10,000 AFC internal protective device to ensure circuit safety during a fault condition. Its standard 1/4-inch quick-connect terminals allow for rapid installation in tight control boxes, providing the necessary phase shift to optimize motor torque and efficiency in residential and commercial cooling equipment.

• Dual-Rated Voltage: Operates at both 370 and 440 VAC, reducing the number of individual SKUs required for field service.
• Thermal Stability: Synthesized dielectric oil preserves capacitance stability under high-ambient rooftop conditions.
• Universal Compatibility: Standard 1.75-inch diameter round profile fits most existing motor capacitor brackets and straps.
• Safety Engineering: Integrated pressure-sensitive interrupter prevents case rupture in the event of an end-of-life internal short.

Common HVACR Technical Inquiries

Can I use a 440V capacitor to replace a 370V rated part?
Yes. While you should never undersize the voltage, using a 440V rated run capacitor in place of a 370V unit is standard practice as it provides a higher dielectric strength and increased durability against voltage spikes.

Will this capacitor fix a motor that is humming but not starting?
If the condenser fan motor is humming or running hot, the 7.5 MFD capacitor has likely drifted out of its +/- 6% tolerance. Replacing the capacitor is the first step in diagnosing PSC motor start failures.

Does the CAP-7.5/440R have a specific polarity?
No. As an AC run capacitor, it is non-polarized. However, ensure that the wiring schematic is followed to correctly bridge the 'Start' and 'Run' windings of the motor.

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.