Supco 9065 Potential Relay

The Supco 9065 Potential Relay is a high-performance, non-positional component designed for precise compressor motor starting in high-torque HVACR applications. Engineered as a universal potential relay, it serves as a direct drop-in replacement for the S1-024-25394-000, ensuring seamless HVAC system diagnostics and repair for service technicians. This 90-65 relay features a continuous coil voltage of 332V and a robust 35 amp contact rating at 277 VAC, meeting stringent OEM specifications for reliability under heavy electrical loads. Its universal break-off mounting bracket allows for flexible installation in tight cabinets, while the non-positional design ensures consistent operation regardless of orientation. For contractors troubleshooting AC repair issues like locked rotor amps or failed start capacitors, this relay provides the definitive switching bridge needed to protect the start winding and optimize efficiency during the critical startup phase.

Key Benefits for HVACR Technicians

• Universal Compatibility: Serves as an HVAC replacement part for Mars 19004, Packard PR9065, and OEM model S1-024-25394-000.
• Precision Switching: Features a calibrated pick-up voltage range of 171-184V and a drop-out voltage of 90V to shield sensitive compressor windings.
• Flexible Installation: The non-positional design and break-off bracket simplify field replacement in residential and commercial air conditioning units.
• Heavy-Duty Construction: Rated for 35A @ 277VAC to withstand the high inrush currents typical of single-phase motors.

Common Questions

How do I verify if a potential relay is faulty?
Technicians should check for continuity across terminals 1 and 2 (normally closed). An infinite resistance (OL) reading indicates the contacts are stuck open, preventing the start capacitor from engaging. Additionally, measure the coil voltage across terminals 2 and 5 to ensure the internal electromagnetic coil is within spec.

Can this relay be used on any compressor?
The Supco 9065 is a universal aftermarket solution designed for most single-phase HVAC&R compressors & motors. Always cross-reference the continuous coil voltage and pick-up ratings against the manufacturer’s data sheet for specific high-torque applications.

What causes a potential relay to fail prematurely?
Short-cycling, low supply voltage, or a failing start/run capacitor can cause excessive arcing at the contacts. When performing an AC service, it is best practice to inspect all related start components to ensure the 9065 relay operates within its 332V limit.

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.