Daikin-McQuay 037516402 Run Capacitor

The Daikin-McQuay 037516402 Run Capacitor is a mission-critical 4 MFD 440V oval capacitor designed for precise phase-shifting and motor torque regulation in high-demand HVACR applications. Engineered to handle internal heat dissipation effectively, this 4 microfarad motor run capacitor ensures continuous operation for blower motors and small compressors. Its 440VAC rating provides a necessary safety margin over standard 370V units, allowing it to withstand transient voltage spikes and high ambient temperatures commonly found in commercial rooftop units and air handlers. Replacing a degraded Daikin 037516402 is essential for maintaining efficient power factor correction and preventing motor winding overheating, which can lead to premature mechanical failure.

Key Technical Benefits

• Dual Voltage Compatibility: Rated for 440V, making it a robust replacement for both 370VAC and 440VAC applications.
• Compact Oval Design: Fits standard mounting brackets found in Daikin-McQuay control boxes and tight service panels.
• Internal Safety Mechanisms: Built with a pressure-sensitive interrupter to disconnect the capacitor in the event of an internal short.
• Low Dissipation Factor: Minimizes energy loss, ensuring the motor receives stable current for optimal RPM consistency.

Common HVACR Questions

Can I use an oval capacitor to replace a round one with the same specs?
Technically, as long as the 4 microfarad rating and 440V capacity match, the electrical performance will be identical. However, you must ensure the mounting strap or bracket is compatible with the oval run capacitor geometry to prevent vibration-induced lead failure.

What happens if I install a capacitor with a higher MFD rating?
Using an incorrect MFD rating can shift the motor's magnetic field improperly, causing excessive heat in the windings and high amp draw. Always match the 037516402 specification of 4 MFD to maintain factory performance levels.

Is the 440V rating necessary if my system runs on 230V?
Yes. The voltage rating on the Daikin-McQuay 037516402 refers to the maximum peak voltage the dielectric can handle, not the line voltage. A 440V unit offers higher reliability in heavy-start cycles compared to 370V alternatives.

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.