Tecumseh K90-65 Overload Kit

The Tecumseh K90-65 Overload Kit is a critical field-service component engineered to provide precise compressor thermal protection for high-back-pressure reciprocating models, including the AE4425Z-XN1A series. Built for 208-230V single-phase applications, this OEM Tecumseh part functions as a fail-safe by monitoring terminal current and internal temperature. High-current draws or thermal spikes trigger the overload protector to interrupt the common circuit, preventing catastrophic motor burnout or terminal venting. For contractors managing food service repairs, this kit ensures a direct-fit replacement for Franke equipment and commercial refrigeration units where system reliability is non-negotiable. Using a genuine Tecumseh refrigeration part maintains the original equipment’s calibrated trip points, shielding the windings from damage caused by low refrigerant charge, restricted airflow, or capacitor failure. Whether you are performing routine maintenance or diagnosing a humming compressor that won't start, this kit provides the essential hardware to restore safe, high-performance operation to your refrigeration and air conditioning systems.

• OEM Calibrated Protection: Specifically designed to match the thermal curves of Tecumseh AE series compressors to prevent winding damage.
• Direct Replacement: Simplifies repairs for 208-230V applications, ensuring compatibility with Franke food service motor controls.
• Enhanced System Durability: Eliminates the risk of compressor burnout by reliably shutting down the circuit during overcurrent events.
• Field-Proven Reliability: Reduces call-backs by using a factory-certified overload protector instead of imprecise universal alternatives.

How do I verify if the K90-65 overload has tripped?
Disconnect power and check for continuity between the common terminal and the run/start windings using a multimeter. If the compressor is hot and the circuit is open, the thermal overload is doing its job; let the unit cool before re-testing.

Is this kit compatible with 115V AE series compressors?
No, the K90-65 is specifically rated for 208-230V/60Hz/1Ph systems. For 115V models, refer to the manufacturer’s guidebook to select the appropriately rated kit, such as the K90-55.

What causes this overload kit to fail or trip frequently?
Frequent tripping is often an indicator of external issues such as dirty condenser coils, a failing start/run capacitor, or incorrect voltage supply. Always diagnose the root cause of the heat buildup before putting the system back into service.

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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.