Copeland 940-C411-66 Relay Kit

The Copeland 940-C411-66 Relay Kit is a field-proven current relay kit engineered for precise compressor motor starting applications. As the direct 040-0163-01 replacement, this component is critical for single-phase compressor systems where consistent torque and reliable disconnection of the start winding are required once the motor achieves operational speed. This OEM Copeland 940-C411-66 assembly is calibrated for a specific current range, featuring a pick-up amperage of 11.0A and a drop-out amperage of 9.2A to 9.35A, ensuring the motor start circuit is protected from prolonged engagement. Designed for heavy-duty HVACR motor control, this relay integrates seamlessly into existing terminal configurations, providing a high-integrity electrical connection that maintains system efficiency in commercial and residential refrigeration units. When replacing legacy compressor start relays, utilizing this specific kit ensures the electrical characteristics match the original manufacturer’s specifications, preventing premature start capacitor failure and winding overheating.

• Direct OEM Compatibility: Specifically designed to replace the 040-0163-01, ensuring drop-in mechanical and electrical alignment.
• Precision Calibration: Optimized with an 11.0A pick-up and 9.2-9.35A drop-out threshold for accurate start winding de-energization.
• Industrial Build Quality: Constructed by Copeland to withstand high-cycle starting demands in demanding refrigeration environments.
• Optimized Motor Protection: Prevents start-phase over-current issues by ensuring a clean break once the rotor reaches the necessary RPM.

What is the primary difference between the 940-C411-66 and the 040-0163-01?
The 940-C411-66 is the current production kit designed to encompass and replace the older 040-0163-01 part number, maintaining the exact electrical trip points and mounting footprint required for the compressor.

Can this relay be used on any 11-amp compressor?
No, current relays are matched to specific motor winding characteristics. You must verify the compressor model number or the original relay's pick-up and drop-out ratings before installation.

Is this a potential relay or a current relay?
This is a current relay. Unlike potential relays that sense CEMF, this unit monitors the actual current draw through the run winding to manage the start circuit.

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.