Carrier HH19ZH195 Limit Switch

The Carrier HH19ZH195 Limit Switch is a critical safety component designed for precise thermal monitoring in high-demand HVACR systems. Engineered as a normally closed (NC), SPST (Single Pole Single Throw) control, this 195F CO auto limit switch serves as a reliable safeguard by interrupting the electrical circuit when the discharge air or heat exchanger temperature reaches 195 degrees Fahrenheit. This OEM Carrier replacement part is built to withstand corrosive environments using high-grade materials, ensuring long-term stability in commercial refrigeration and heating applications.

A preferred choice for technicians working on Carrier PTAC units and rooftops, the HH19ZH195 features an automatic reset mechanism, allowing the system to resume normal operation once temperatures drop below the safety threshold. Its compact form factor and genuine Therm-O-Disc 60FX04 cross-reference capability make it an essential HVAC safety switch for maintaining equipment uptime and preventing catastrophic component failure. Integrating this genuine HVAC part ensures your system maintains factory-spec safety parameters without the risks associated with universal alternatives.

• Precise Thermal Cut-Out: Calibrated to open at exactly 195 degrees Fahrenheit to prevent heat exchanger damage.
• Automatic Reset Logic: Eliminates the need for manual intervention after the system cools, reducing service call volume.
• Industrial-Grade Build: Features a corrosion-resistant housing suitable for moisture-prone commercial HVAC environments.
• Direct OEM Fit: Designed for seamless integration into Carrier and Bryant equipment, ensuring electrical and mounting compatibility.

What causes a Carrier HH19ZH195 to trip frequently?
Repeated tripping usually indicates restricted airflow, often caused by a dirty air filter, a failing blower motor, or blocked ductwork. If the switch remains open despite normal temperatures, the internal bimetallic disc may have failed.

Is the HH19ZH195 interchangeable with other limit switches?
This switch is an OEM HH19ZH195 part. While it cross-references with the Therm-O-Disc 60FX04, you must verify the exact temperature rating and mounting depth to ensure the sensor sits correctly in the airstream.

Can this limit switch be manually reset?
No, this is an automatic reset limit switch. It is designed to close the circuit automatically once the sensed temperature falls below the reset differential.

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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.