378-454 uf/MFD 110-125 VAC Volt Round Motor Start Capacitor

Key Features

• Capacitance: 378-454 µF (Microfarad)
• Voltage Rating: 110-125 Volts AC
• Frequency: 50/60 Hz
• Tolerance: +20% / -0%
• Operating Temperature Range: -40°C to +65°C
• Shape: Round
• Case Material: High-grade phenolic resin
• Dielectric Fluid: Contains no Polychlorinated Biphenyls (PCBs)

Replaces / Cross-Reference Part Numbers

This capacitor is a universal replacement for start capacitors with matching specifications. Verify the capacitance (µF) and voltage (VAC) ratings of your original part before ordering. May replace parts labeled:

• CD60
• SC0029
• 1023

Compatibility & Fitment

Designed for intermittent duty in AC single-phase motor starting circuits. Common applications include:

• HVAC units (condensers, air conditioners, heat pumps)
• Air compressors
• Water pumps and well pumps
• Various electric motors requiring a start capacitor

When to Replace

A failing start capacitor can cause motor issues. Consider replacement if you observe the following symptoms:

• Motor hums but does not start or turn over
• Motor starts slowly or struggles to reach operating speed
• Start capacitor shows physical damage such as bulging, cracking, or leaking fluid
• Capacitance measures outside of the component's rated tolerance range when tested with a multimeter

Installation Tips

• Disconnect all electrical power to the unit before beginning installation.
• Safely discharge the existing capacitor by shorting the terminals with an insulated screwdriver.
• Confirm the µF (MFD) and VAC ratings of the new capacitor match the original component's specifications.
• Ensure all electrical connections are clean and secure.

Compatibility & Fitment