Supco Refrigerator RCO210 Relay, Capacitor & Overload; 3-in-1 solid-state hard-start kit

Universal 110–125 VAC refrigeration hard-start device combining a relay, overload, and start capacitor. Rated for 1/3–1/2 HP compressors, 115 VAC, maximum continuous RLA 13.3 A, maximum LRA 40 A, 243–292 MFD capacitance, and quick-connect mounting. Intended for refrigeration systems with or without run capacitors.

Is This the Right Part?

Common Symptoms

• Low-voltage starting difficulty.
• Hard-start condition on an unbalanced refrigeration system.

Check Before Replacing

• Disconnect power before accessing compressor-start circuitry.
• Confirm the compressor is within the RCO210’s 1/3 to 1/2 HP and 13.3 A maximum continuous-RLA ratings.
• Verify the refrigeration system application and compressor start-terminal design before selecting a replacement.
• With power disconnected, inspect the existing start-device connections and compressor terminals for loose, heat-damaged, or corroded connectors.
• If supply-voltage or compressor electrical testing is needed, have a qualified appliance or refrigeration technician perform it.

Pro Tip

Part Details

Key Features

• Combines relay, overload, and start capacitor in one prewired device.
• Provides a starting boost for hard-start and unbalanced systems.
• Helps prevent low-voltage starting problems.
• Quick-connect mounting.
• Color-designated compressor leads: white/start, black/common, red/run.
• UL Recognized.

Installation Notes

• This part connects to line-voltage compressor circuitry; disconnect appliance power before service.
• Use only where the compressor and system application meet the published RCO210 ratings.
• Follow the lead designations printed by Supco: white to Start, black to Common, and red to Run.
• The unit is specified for quick-connect mounting; ensure connections are fully seated and not damaged.
• If terminal identification, supply-voltage verification, or compressor diagnosis is uncertain, use a qualified refrigeration technician.