Copeland 971-0090-47 Overload Relay

The Copeland 971-0090-47 Overload Relay is a critical OEM replacement part engineered for precise compressor motor protection in commercial HVAC and refrigeration systems. This thermal overload protector acts as a fail-safe against overcurrent and overheating conditions that can lead to catastrophic motor failure. Designed for integration with specific Copeland refrigeration compressors and heat pumps, the 971-0090-47 monitors electrical draw and interrupts power to the winding circuit when limits are exceeded. As an authentic Copeland HVAC part, it ensures your system maintains its original engineering specifications and operational efficiency. For technicians troubleshooting compressor thermal protection issues, using this high-quality overload relay is essential to prevent winding damage and costly downtime in demanding industrial environments.

Key Benefits:

• Precision Calibration: Factory-set trip points specific to Copeland motor characteristics for accurate overload protection.
• Direct OEM Compatibility: Ensures a seamless drop-in fit without the need for modifications to the wiring harness or mounting brackets.
• Enhanced Durability: Constructed with high-grade materials to withstand the rapid cycling and thermal stresses of commercial refrigeration.
• System Safety: Effectively mitigates the risk of fire and mechanical damage caused by electrical faults or locked rotor conditions.

Common Questions:

How do I know if my Copeland overload relay is tripped?
If the compressor fails to start while the contactor is engaged and there is power at the terminals, check for continuity across the 971-0090-47. If the circuit is open when the motor is cool, the relay likely requires replacement.

Can I use a universal overload instead of this OEM part?
While universal parts exist, they often lack the precise trip curves required for Copeland compressor protection. Using the 971-0090-47 ensures the trip points match the specific amperage range of your equipment.

What causes this overload relay to fail frequently?
Repeated tripping is usually a symptom of a larger issue, such as low voltage, a failing capacitor, or high head pressure. Frequent cycles can eventually fatigue the internal bimetal strip, necessitating a replacement.

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.