
Bard HVAC 8402-142BX Switch
The Bard HVAC 8402-142BX is a professional-grade L145-30 expansion face auto grey switch, functioning as a high-limit safety control for Bard wall-mount heat pumps and air conditioning units. As a direct replacement for the discontinued 8402-142, this OEM Bard limit control is engineered to monitor supply air temperatures and prevent heat exchanger damage. The L145-30 rating indicates a calibrated opening temperature of 145°F with an automatic reset occurring after a 30°F temperature drop. This exposed face switch features a grey housing for easy identification during field service and is essential for resolving issues such as nuisance lockouts, short cycling, or overheating caused by restricted airflow. The "BX" suffix denotes that the part is individually boxed, ensuring the HVAC replacement part arrives protected and ready for immediate installation in commercial HVAC systems or telecommunications equipment shelters.
Key Benefits:
- Precise Safety Monitoring: Provides critical thermal protection by opening the circuit at 145°F to prevent HVAC system overheating.
- Automatic Reset Functionality: Features a 30°F differential reset, allowing the system to resume operation automatically once safe temperatures are restored.
- OEM Compatibility: Designed specifically as a genuine Bard replacement part, ensuring factory-spec fitment and electrical calibration.
- Reduced Maintenance: High-quality construction minimizes limit switch failure, extending the service life of Bard wall-mount units.
- Durable Exposed Face Design: Optimized for rapid response to ambient temperature changes within the cabinet or heat exchanger.
Common Questions:
What does the L145-30 rating signify on this Bard switch?
The L145-30 designation means this is a limit control that opens the electrical circuit when it senses a temperature of 145°F and automatically closes (resets) after the temperature drops by 30°F.
Will the 8402-142BX fit if my original part was 8402-142?
Yes, the 8402-142BX is the manufacturer-designated direct replacement for the 8402-142. The "BX" simply indicates the part is packaged in a box for individual sale rather than bulk assembly.
Why is my Bard HVAC unit tripping on high limit?
A tripped limit switch often indicates restricted airflow, a dirty filter, or a failing blower motor. If the switch remains open or is out of calibration, replacing it with a new 8402-142BX restores the safety 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.
Bard HVAC 8402-142BX Switch
The Bard HVAC 8402-142BX is a professional-grade L145-30 expansion face auto grey switch, functioning as a high-limit safety control for Bard wall-mount heat pumps and air conditioning units. As a direct replacement for the discontinued 8402-142, this OEM Bard limit control is engineered to monitor supply air temperatures and prevent heat exchanger damage. The L145-30 rating indicates a calibrated opening temperature of 145°F with an automatic reset occurring after a 30°F temperature drop. This exposed face switch features a grey housing for easy identification during field service and is essential for resolving issues such as nuisance lockouts, short cycling, or overheating caused by restricted airflow. The "BX" suffix denotes that the part is individually boxed, ensuring the HVAC replacement part arrives protected and ready for immediate installation in commercial HVAC systems or telecommunications equipment shelters.
Key Benefits:
- Precise Safety Monitoring: Provides critical thermal protection by opening the circuit at 145°F to prevent HVAC system overheating.
- Automatic Reset Functionality: Features a 30°F differential reset, allowing the system to resume operation automatically once safe temperatures are restored.
- OEM Compatibility: Designed specifically as a genuine Bard replacement part, ensuring factory-spec fitment and electrical calibration.
- Reduced Maintenance: High-quality construction minimizes limit switch failure, extending the service life of Bard wall-mount units.
- Durable Exposed Face Design: Optimized for rapid response to ambient temperature changes within the cabinet or heat exchanger.
Common Questions:
What does the L145-30 rating signify on this Bard switch?
The L145-30 designation means this is a limit control that opens the electrical circuit when it senses a temperature of 145°F and automatically closes (resets) after the temperature drops by 30°F.
Will the 8402-142BX fit if my original part was 8402-142?
Yes, the 8402-142BX is the manufacturer-designated direct replacement for the 8402-142. The "BX" simply indicates the part is packaged in a box for individual sale rather than bulk assembly.
Why is my Bard HVAC unit tripping on high limit?
A tripped limit switch often indicates restricted airflow, a dirty filter, or a failing blower motor. If the switch remains open or is out of calibration, replacing it with a new 8402-142BX restores the safety 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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Bard HVAC 8402-142BX is a professional-grade L145-30 expansion face auto grey switch, functioning as a high-limit safety control for Bard wall-mount heat pumps and air conditioning units. As a direct replacement for the discontinued 8402-142, this OEM Bard limit control is engineered to monitor supply air temperatures and prevent heat exchanger damage. The L145-30 rating indicates a calibrated opening temperature of 145°F with an automatic reset occurring after a 30°F temperature drop. This exposed face switch features a grey housing for easy identification during field service and is essential for resolving issues such as nuisance lockouts, short cycling, or overheating caused by restricted airflow. The "BX" suffix denotes that the part is individually boxed, ensuring the HVAC replacement part arrives protected and ready for immediate installation in commercial HVAC systems or telecommunications equipment shelters.
Key Benefits:
- Precise Safety Monitoring: Provides critical thermal protection by opening the circuit at 145°F to prevent HVAC system overheating.
- Automatic Reset Functionality: Features a 30°F differential reset, allowing the system to resume operation automatically once safe temperatures are restored.
- OEM Compatibility: Designed specifically as a genuine Bard replacement part, ensuring factory-spec fitment and electrical calibration.
- Reduced Maintenance: High-quality construction minimizes limit switch failure, extending the service life of Bard wall-mount units.
- Durable Exposed Face Design: Optimized for rapid response to ambient temperature changes within the cabinet or heat exchanger.
Common Questions:
What does the L145-30 rating signify on this Bard switch?
The L145-30 designation means this is a limit control that opens the electrical circuit when it senses a temperature of 145°F and automatically closes (resets) after the temperature drops by 30°F.
Will the 8402-142BX fit if my original part was 8402-142?
Yes, the 8402-142BX is the manufacturer-designated direct replacement for the 8402-142. The "BX" simply indicates the part is packaged in a box for individual sale rather than bulk assembly.
Why is my Bard HVAC unit tripping on high limit?
A tripped limit switch often indicates restricted airflow, a dirty filter, or a failing blower motor. If the switch remains open or is out of calibration, replacing it with a new 8402-142BX restores the safety 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.












