Copeland 940-0001-62 Relay

The Copeland 940-0001-62 Relay is a high-specification potential start relay engineered for heavy-duty HVACR compressor applications. Designed to handle the rigorous induction loads of Copeland Scroll and reciprocating units, this OEM compressor relay features a 253V coil rating with precise switching thresholds. With a pickup voltage range of 150 to 160V and a drop-out range of 35 to 77V, it ensures the start capacitor is efficiently removed from the circuit once the motor reaches sufficient speed, protecting internal windings from overheating. This 040-0166-21 type relay is a standard 3-screw terminal configuration, allowing for a direct-fit replacement in light commercial refrigeration and residential air conditioning systems. When replacing a failed compressor start component, utilizing an authentic 940-0001-62 potential relay ensures electrical compatibility with existing run capacitors and start-assist kits, maintaining the calibrated performance required for high-torque 60Hz motor startups in demanding environments.

• Precision Calibration: Optimized 150-160V pickup and 35-77V dropout range prevent premature contact wear and capacitor stress.
• Direct OEM Replacement: Replaces part numbers 040-0166-21 and 3ARR3KC5M5, ensuring exact mechanical and electrical fit for Copeland compressors.
• Robust Construction: Panel-mount design with 3-screw terminals provides a secure, vibration-resistant connection in high-duty cycle refrigeration units.
• Enhanced Motor Protection: Eliminates start winding engagement post-startup to prevent thermal overload and extend the operational life of the compressor motor.

Is the Copeland 940-0001-62 compatible with 115V or 230V systems?
This relay is specifically rated for a 253V coil and is typically utilized in 208-230V single-phase applications. Always verify your specific compressor's voltage requirements before installation.

What are the symptoms of a failing 940-0001-62 potential relay?
Common indicators include the compressor "humming" but failing to start, tripped circuit breakers upon startup, or a blown start capacitor. Potential relays are often the culprit when the start circuit stays engaged too long.

Can I use this relay to replace a universal potential relay?
While universal relays offer adjustable settings, using the 940-0001-62 is preferred for Copeland units as it matches the factory-specified tension and pickup voltages required for optimal scroll compressor protection.

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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.