Trane CPT0120 Run Capacitor

The Trane CPT0120 is a high-performance 7.5 MFD 370V oval run capacitor engineered for continuous duty in residential and commercial HVACR systems. Designed as a direct OEM replacement part, this metalized polypropylene capacitor is housed in a rugged aluminum casing to ensure superior heat dissipation and structural integrity under high-operating temperatures. With a 370V AC rating and a 50/60 Hz frequency range, it provides the stable phase shift required for efficient motor starting and operation in blower motors and small condenser fans. The oval can design allows for a compact footprint, making it ideal for tight control boxes where space is at a premium. This non-PCB, single-capacitance unit is built for reliability, featuring standard quick-connect terminals for a secure, low-resistance interface. When replacing a failed Trane run capacitor, utilizing this HVAC motor capacitor ensures the system maintains precise power factor correction and protects inductive loads from premature wear.

Key Benefits:

• OEM Compatibility: Specifically designed for Trane and American Standard equipment to ensure exact electrical specifications.
• Enhanced Thermal Rating: Operates efficiently within a range of -40°C to 70°C, suitable for demanding rooftop and mechanical room environments.
• Reliable Construction: Features a metalized polypropylene dielectric and an aluminum case for improved moisture resistance and pressure-interrupter safety.
• Efficient Form Factor: The oval run capacitor geometry fits into legacy and modern enclosures without modification.
• Electrical Stability: Maintains a tight ±10% tolerance to keep motor windings within optimal performance parameters.

Common Questions:

Can I use a 370V capacitor if my unit requires 440V?
No. In HVACR applications, you can use a higher voltage rating (e.g., a 440V capacitor to replace a 370V unit), but never a lower voltage rating. Using a 370V capacitor in a 440V circuit will lead to immediate dielectric breakdown and component failure.

Is the Trane CPT0120 interchangeable with other brands?
Yes, provided the capacitance (7.5 MFD) matches and the voltage rating is 370V or higher. However, sticking with Trane CPT0120 ensures the physical dimensions and terminal orientation align with the original equipment manufacturer’s mounting brackets.

What are the signs of a failing run capacitor?
Typical indicators include a humming motor that fails to start, excessive heat generation at the motor, or visible bulging and leaking of the capacitor's aluminum housing.

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.