Copeland 940-0001-68 Start Relay

The Copeland 940-0001-68 Start Relay is a precision-engineered potential relay designed for high-torque motor starting in commercial refrigeration and residential HVAC systems. Built to handle a 420V rating at 60Hz, this component is critical for ensuring that the start capacitor is dropped out of the circuit at the precise moment the motor reaches its pickup voltage. For technicians servicing Copeland compressors, using an OEM start relay is essential to maintain the integrity of the compressor’s electrical characteristics and prevent premature windings failure.

This compressor start relay features a rugged construction weighing 0.25 lbs, making it a drop-in replacement for failed potential relays in high-head pressure applications. By integrating this Copeland replacement part, contractors ensure reliable switching and motor protection, minimizing service callbacks related to hard-start issues or HVAC start relay failure. Whether you are troubleshooting a refrigeration start relay on a reach-in cooler or a heavy-duty condensing unit, the 940-0001-68 provides the specific electrical tolerances required for Copeland 940-0001-68 compatibility.

• Precise Voltage Sensing: Calibrated for 420 VAC operation to ensure accurate cutout of the start circuit.
• OEM Reliability: Certified Copeland 940-0001-68 component designed to match the original torque specifications of the compressor.
• High Durability: Constructed to withstand the high-cycle demands of commercial refrigeration and air conditioning systems.
• Compact Form Factor: Standardized 3.5" x 2.7" x 2.1" dimensions allow for easy installation within existing electrical control boxes.

What happens if the start relay fails to drop out?
If the relay remains closed, the start capacitor stays in the circuit too long, which will quickly lead to capacitor failure or damage to the motor windings. This potential relay is designed to prevent that scenario through precise electromagnetic switching.

Can I use this relay for 50Hz applications?
This specific model is rated for 60Hz. Using it on a 50Hz system can shift the pickup and dropout voltages, potentially causing erratic starting behavior or component failure.

How do I verify if the 940-0001-68 is the correct replacement?
Always match the part number from the compressor's bill of materials. This relay is a direct OEM replacement part for many Copeland units, but verifying the specific voltage and terminal configuration is recommended before installation.

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.