CD60 Motor Starting Capacitor 500-550uF 330V AC Snap-In

The CD60 Motor Starting Capacitor in the 500–550 µF range is the top-capacitance tier of the CD60 family, built for large single-phase compressors and pump motors with heavy starting inertia. Rated 330V AC at 50/60 Hz, it delivers the strong phase-shift surge needed to crank cold-storage compressors, commercial freezers, and big well pumps past the stall zone.

Housed in a bakelite/phenolic resin shell with snap-in body and quick-connect tabs, it drops into standard brackets. This capacitor is strictly intermittent-duty: engaged for the few-second start window, then dropped out by a relay or centrifugal switch.

Key Features

• Top-Tier Capacitance: 500–550 µF (MFD), the largest step in the CD60 lineup.
• Voltage Rating: 330V AC, compatible with 110V–230V single-phase motor systems.
• Dual Frequency: Runs on both 50 Hz and 60 Hz supplies.
• Snap-In Mounting: Standard quick-connect terminals, no extra hardware.
• Durable Shell: Bakelite/phenolic resin case resists heat, shock, and vibration.
• Intermittent Duty: Start-only, not for continuous run.
• Non-Polarized: Either terminal orientation works in the start circuit.

Specifications

• Model: CD60
• Capacitance: 500–550 µF (MFD)
• Rated Voltage: 330V AC
• Frequency: 50/60 Hz
• Capacitance Tolerance: 0 to +20% (per ANSI/EIA-463)
• Case Material: Bakelite / phenolic resin
• Mounting Style: Snap-In (quick-connect terminals)
• Operating Temperature: -40°C to +65°C (typical)
• Withstand Voltage: 1.25× rated between terminals; 2000V AC terminal-to-case
• Duty Cycle: 1 second on / 59 seconds off at 55°C, 220–330VAC, 15,000 cycles
• Standards: ANSI/EIA-463, IEC 60252-2, GB/T 3667

Applications

Direct replacement for high-inertia start circuits:

Commercial Refrigeration

• Walk-in cooler and freezer compressors
• Reach-in commercial refrigerator compressors
• Ice machine compressors

HVAC & Cold Storage

• Large rooftop unit compressors
• Cold-room condensing units
• Low-temperature display cases

Water & Agriculture

• Deep well pumps
• Large booster pump stations
• Irrigation and livestock water systems

Industrial Equipment

• Stationary air compressors
• Conveyor drive motors
• Woodworking and metal shop machinery

Installation & Safety

• This capacitor is for motor starting only — must be paired with a functioning relay or centrifugal switch.
• Continuous operation will cause overheating, bulging, and premature failure.
• Lock out and tag the branch circuit. Verify zero voltage at the motor with a known-good tester before touching anything.
• Capacitors store charge after unplug. Discharge safely with a resistor before handling — high-capacitance units hold a dangerous charge.
• Match three things: µF range, AC voltage rating (330V AC or higher), and physical dimensions/bracket style.

Why Choose Our CD60 Capacitors?

• Every unit is electrically tested before shipment.
• Factory-direct pricing for contractors, distributors, and bulk buyers.
• Consistent manufacturing against CD60-class specs for repeatable cranking performance.
• Global shipping available — contact us for volume and wholesale pricing.