Copeland 940-0001-71 Relay

The Copeland 940-0001-71 Relay is a high-duty potential relay engineered for precise compressor motor starting in commercial refrigeration and HVAC systems. As a veteran-grade OEM replacement part, this electromagnetic component is designed to manage start capacitors by sensing the motor's back electromotive force (EMF). With a robust 375 VAC coil voltage rating and a 35A amperage capacity, it provides the switching reliability required for demanding industrial applications. The unit features a 280 to 300 V pick-up voltage and a 50 to 110 V drop-out voltage, ensuring the start circuit is engaged and disengaged at exactly the right parameters to prevent motor winding damage. This relay is a direct cross-reference for the Copeland 040-0166-30 and is compatible with heavy-duty compressors such as the ARE59C3-CAV and ARG4-0051-CAV. The compact, panel-mount design with 3-screw terminals allows for secure, vibration-resistant installation in tight control boxes.

• Precise Voltage Sensing: Calibrated for 280/300V pick-up to ensure start capacitors are removed from the circuit at the optimal motor speed.
• Industrial Durability: Rated for 400VAC and 35A to handle the high-inrush currents typical of commercial refrigeration compressors.
• Exact OEM Specifications: Maintains system integrity by matching original factory performance curves, reducing the risk of premature motor failure.
• Streamlined Installation: Designed with a standard panel-mount footprint and logical 3-screw terminal configuration for quick field replacement.

• What are the pick-up and drop-out ratings for this specific relay? The 940-0001-71 has a pick-up voltage range of 280V to 300V and a drop-out voltage of 50V to 110V.
• Which compressor models is this relay compatible with? It is commonly used with Copeland compressors including the ARE59C3-CAV and ARG4-0051-CAV series.
• Can this relay be used as a replacement for the 040-0166-30? Yes, the 940-0001-71 is the direct manufacturer-specified replacement for part number 040-0166-30.

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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.