Carrier HH12ZZ165 Limit Switch
The Carrier HH12ZZ165 Limit Switch is a critical OEM safety component engineered for precision thermal monitoring in HVAC furnaces and industrial heating systems. As a fixed-temperature L165F-40 limit control, this switch features a normally closed (NC) circuit designed to open on a temperature rise at its 165°F set point, effectively preventing heat exchanger damage. With a 40°F differential, the automatic reset engages when the internal temperature drops to 125°F, ensuring the system resumes operation once safe parameters are met. The HH12ZZ165 is housed in a durable casing to withstand the high-vibration and high-heat environments common in Carrier, Bryant, and Payne equipment. Its 2-7/8 inch insert length allows for optimal placement within the airflow path to provide rapid response times. For technicians, this SPST limit switch is the primary replacement for ensuring system safety and meeting original manufacturer specifications in thermal protection circuits.
Key Benefits- Precise Thermal Protection: Opens at exactly 165°F to prevent overheating and potential heat exchanger failure.
- OEM Reliability: Genuine Carrier replacement part ensures exact fit and electrical compatibility with residential and industrial HVAC units.
- Standardized Differential: Features a 40°F reset differential, providing a stable 125°F re-close point for consistent cycling.
- Durable Construction: Built to endure the diverse applications found in modern HVAC limit controls.
- Automatic Reset: Eliminates the need for manual intervention once the system temperature has safely dissipated.
Is the HH12ZZ165 a manual or automatic reset switch?
This is an automatic reset switch that opens at 165°F and closes after a 40-degree temperature drop.
What causes a Carrier limit switch to trip repeatedly?
Frequent tripping is usually caused by restricted airflow, such as a clogged filter, a failing blower motor, or undersized ductwork causing temperatures to exceed the 165°F threshold.
Can I use this switch in a Bryant or Payne furnace?
Yes, as an OEM Carrier part, the HH12ZZ165 is commonly specified for Bryant and Payne models that share the same technical requirements for a 165-degree limit.
This item is not eligible for free shipping.
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.
Original: $35.67
-65%$35.67
$12.48Carrier HH12ZZ165 Limit Switch
The Carrier HH12ZZ165 Limit Switch is a critical OEM safety component engineered for precision thermal monitoring in HVAC furnaces and industrial heating systems. As a fixed-temperature L165F-40 limit control, this switch features a normally closed (NC) circuit designed to open on a temperature rise at its 165°F set point, effectively preventing heat exchanger damage. With a 40°F differential, the automatic reset engages when the internal temperature drops to 125°F, ensuring the system resumes operation once safe parameters are met. The HH12ZZ165 is housed in a durable casing to withstand the high-vibration and high-heat environments common in Carrier, Bryant, and Payne equipment. Its 2-7/8 inch insert length allows for optimal placement within the airflow path to provide rapid response times. For technicians, this SPST limit switch is the primary replacement for ensuring system safety and meeting original manufacturer specifications in thermal protection circuits.
Key Benefits- Precise Thermal Protection: Opens at exactly 165°F to prevent overheating and potential heat exchanger failure.
- OEM Reliability: Genuine Carrier replacement part ensures exact fit and electrical compatibility with residential and industrial HVAC units.
- Standardized Differential: Features a 40°F reset differential, providing a stable 125°F re-close point for consistent cycling.
- Durable Construction: Built to endure the diverse applications found in modern HVAC limit controls.
- Automatic Reset: Eliminates the need for manual intervention once the system temperature has safely dissipated.
Is the HH12ZZ165 a manual or automatic reset switch?
This is an automatic reset switch that opens at 165°F and closes after a 40-degree temperature drop.
What causes a Carrier limit switch to trip repeatedly?
Frequent tripping is usually caused by restricted airflow, such as a clogged filter, a failing blower motor, or undersized ductwork causing temperatures to exceed the 165°F threshold.
Can I use this switch in a Bryant or Payne furnace?
Yes, as an OEM Carrier part, the HH12ZZ165 is commonly specified for Bryant and Payne models that share the same technical requirements for a 165-degree limit.
This item is not eligible for free shipping.
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.
Product Information
Product Information
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Description
The Carrier HH12ZZ165 Limit Switch is a critical OEM safety component engineered for precision thermal monitoring in HVAC furnaces and industrial heating systems. As a fixed-temperature L165F-40 limit control, this switch features a normally closed (NC) circuit designed to open on a temperature rise at its 165°F set point, effectively preventing heat exchanger damage. With a 40°F differential, the automatic reset engages when the internal temperature drops to 125°F, ensuring the system resumes operation once safe parameters are met. The HH12ZZ165 is housed in a durable casing to withstand the high-vibration and high-heat environments common in Carrier, Bryant, and Payne equipment. Its 2-7/8 inch insert length allows for optimal placement within the airflow path to provide rapid response times. For technicians, this SPST limit switch is the primary replacement for ensuring system safety and meeting original manufacturer specifications in thermal protection circuits.
Key Benefits- Precise Thermal Protection: Opens at exactly 165°F to prevent overheating and potential heat exchanger failure.
- OEM Reliability: Genuine Carrier replacement part ensures exact fit and electrical compatibility with residential and industrial HVAC units.
- Standardized Differential: Features a 40°F reset differential, providing a stable 125°F re-close point for consistent cycling.
- Durable Construction: Built to endure the diverse applications found in modern HVAC limit controls.
- Automatic Reset: Eliminates the need for manual intervention once the system temperature has safely dissipated.
Is the HH12ZZ165 a manual or automatic reset switch?
This is an automatic reset switch that opens at 165°F and closes after a 40-degree temperature drop.
What causes a Carrier limit switch to trip repeatedly?
Frequent tripping is usually caused by restricted airflow, such as a clogged filter, a failing blower motor, or undersized ductwork causing temperatures to exceed the 165°F threshold.
Can I use this switch in a Bryant or Payne furnace?
Yes, as an OEM Carrier part, the HH12ZZ165 is commonly specified for Bryant and Payne models that share the same technical requirements for a 165-degree limit.
This item is not eligible for free shipping.
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.
