Copeland 940-0140-08 Potential Relay

Description

The Copeland 940-0140-08 is a precision-engineered potential relay designed to support reliable start-up performance in single-phase compressor applications. Potential relays play a critical role in HVAC refrigeration systems by monitoring the back-EMF (electromotive force) generated by the start winding of a compressor motor. Once the motor reaches the appropriate run speed, the relay opens the start circuit, disconnecting the start capacitor and allowing the compressor to operate efficiently on the run winding alone.

Key Features

• Genuine Copeland OEM potential relay engineered for precise compressor compatibility
• Monitors back-EMF to accurately detect when the motor reaches operating speed
• Disconnects start capacitor at the correct moment to protect motor windings
• Supports reliable, consistent compressor start-up in demanding HVAC/R environments
• Durable construction built to withstand the rigors of commercial and residential refrigeration systems
• Direct OEM replacement for simplified installation and long-term reliability

Application

The Copeland 940-0140-08 Potential Relay is intended for use with compatible Copeland single-phase compressors in air conditioning, heat pump, and refrigeration systems. It is an ideal direct OEM replacement part for technicians performing compressor service, hard-start troubleshooting, or component-level repairs.

Why Choose OEM Copeland Parts?

Using genuine Copeland replacement components ensures proper electrical compatibility, maintains system efficiency, and protects compressor warranty considerations. Aftermarket substitutes may not meet the precise pick and drop voltage specifications required for safe and reliable operation.