Trane SFCAP30D5440R Round Capacitor

The Trane SFCAP30D5440R is a high-performance dual run capacitor engineered for precision motor control in residential and light commercial condensing units. Rated at 30/5 MFD with a 440V operating threshold, this round metal-can component provides the necessary phase-shift and torque stabilization to drive both the hermetic compressor and the condenser fan motor. As a direct replacement for CPT0659 (and superseding CPT00659/CPT01843), it ensures the electrical integrity of Trane and American Standard systems, mitigating common service issues like humming motors or "hard starts" due to capacitance loss.

For technicians in the field, the SFCAP30D5440R Round Capacitor offers a robust aluminum housing designed to dissipate heat in the high-ambient environments of the electrical cabinet. This 30/5 microfarad 440V part is backward compatible with 370V applications, providing a versatile option for truck stock while maintaining tight tolerances (typically +/- 5%) to prevent motor overheating. Its non-PCB HVAC motor run capacitor design and 1/4 inch quick-connect terminals allow for immediate fit-and-function without modifications.

• Dual-Function Design: Consolidates compressor (30 MFD) and fan motor (5 MFD) circuits into a single, space-saving round profile.
• Voltage Versatility: The 440VAC rating supports high-voltage spikes and serves as a heavy-duty alternative for 370VAC rated systems.
• OEM Compatibility: Exact electrical match for Trane, American Standard, and ServiceFirst equipment, ensuring proper impedance.
• Reliable Starting: Stabilizes current flow to the HERM and FAN terminals to prevent relay pitting and compressor stalling.
• Field-Proven Construction: Oil-filled, metallized polypropylene design with a pressure-sensitive interrupter for safe failure protection.

• Can I use this to replace a 30/5 MFD 370V capacitor? Yes, technicians can safely substitute a 440V capacitor for a 370V part, as the voltage rating represents the maximum capacity; however, never downsize a voltage rating.
• What does the 'HERM' terminal connect to? The 'HERM' terminal is dedicated to the hermetically sealed compressor, while the 'FAN' terminal connects to the condenser fan motor and 'C' is the common line.
• Why is my capacitor bulging? Physical deformation or "bubbling" on top of the round can usually indicates an internal failure or electrical surge. Immediate replacement is required to prevent motor winding damage.

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.