Copeland 940-0001-80 Relay Kit

The Copeland 940-0001-80 Relay Kit is a critical component for maintaining the operational integrity of high-torque refrigeration and air conditioning compressors. This genuine OEM potential relay is engineered specifically for systems requiring a 140–150A pickup and a 20–45A dropout rating. By precisely managing the start capacitor circuit, this compressor start relay ensures the motor reaches sufficient speed before disconnecting the start winding, preventing contact welding and winding overheating. For technicians performing field repairs, utilizing this HVAC potential relay replacement guarantees the electrical characteristics match the original equipment manufacturer’s specifications, maintaining the calibration of the start sequence. Designed for heavy-duty refrigeration relay kit applications, the 940-0001-80 provides the necessary technical tolerances to handle back-EMF variations, ensuring repeatable and reliable cycles in both commercial and residential condensing units.

Key Benefits for Contractors

• Exact OEM Calibration: Eliminates the guesswork associated with universal relays by providing 140–150A pickup and 20–45A dropout specs.
• Component Protection: Actively prevents start capacitor failure and motor burnout during high-load start-up conditions.
• Broad Compatibility: Designed for use across a wide range of Copeland-equipped HVACR refrigeration systems.
• Simplified Installation: The kit format includes the necessary mounting hardware to streamline field replacement.

Common Questions

What does the 140–150A pickup rating signify for the Copeland 940-0001-80?
The pickup rating refers to the specific voltage (expressed via current equivalent in internal sensing) at which the relay contacts open to drop the start capacitor out of the circuit once the motor reaches approximately 75-80% of its synchronous speed.

Can this relay replace a universal potential relay?
While universal relays are adjustable, the Copeland 940-0001-80 is factory-set to the precise requirements of specific Copeland compressors, ensuring more reliable long-term performance and protecting the compressor’s internal valving and windings.

How do I know if the potential relay is failing in the field?
Common indicators include the compressor humming but failing to start, tripping the breaker on startup, or the start capacitor showing signs of swelling or venting due to staying in the circuit too long.

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.