Copeland 940-0150-68 Relay

The Copeland 940-0150-68 Current Sensing Relay is a specialized OEM component engineered for high-precision compressor control within commercial refrigeration and HVAC systems. As a genuine Copeland replacement part, also utilized across Heatcraft refrigeration platforms, this 24 VAC relay monitors current flow to protect sensitive equipment and manage high-power switching. This SPST sensing relay is essential for technicians managing overcurrent conditions or complex startup sequences where electrical integrity is paramount.

Capable of operating in extreme ambient temperatures ranging from -40°F to 140°F, the 940-0150-68 is housed in a NEMA 1 enclosure to ensure reliable operation in varied mechanical environments. With a max switching current of 5A, it effectively bridges low-power control signals with heavy-duty compressor circuits. Integrating this OEM HVAC relay ensures your system remains compliant with original manufacturer performance curves, reducing the risk of premature component failure often seen with generic alternatives.

Key Benefits for Contractors

• Universal Application: Optimized for use in Copeland compressor systems and compatible with the Heatcraft 940-0150-68 specification for refrigeration racks and condensing units.
• Safety Protection: Functions as a critical current sensing switch, detecting electrical spikes or faults to prevent motor burnout.
• Environmental Resilience: Designed for industrial HVAC use with a wide operating thermal range and a dust-resistant casing.
• Exact Fit: Measures 3.6" x 2.8" x 2.2", facilitating direct installation into standard mounting brackets without modification.

Common Questions

Is the Copeland 940-0150-68 compatible with older 0150-64 models?
While similarities exist, you should verify the specific amperage thresholds and terminal configurations of your existing unit to ensure this 24V current relay matches the original circuit design.

What is the primary function of this current sensing relay?
It monitors the electrical draw of a specific load (like a compressor) and triggers a secondary action—such as starting a fan or logging a fault—once the current crosses the factory-calibrated threshold.

Can this relay be used in outdoor condensing units?
Yes, its wide operating temperature range is designed for such environments, though it should remain within its NEMA 1 enclosure or a secondary weatherproof control box to protect against direct moisture.

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.