Bard HVAC 8402-067BX Limit Switch

The Bard 8402-067BX Limit Switch is a critical high-limit safety component designed specifically for industrial HVAC applications, including wall-mount air conditioners and heat pumps. This automatic reset limit switch features a 7-inch probe insertion depth, ensuring precise temperature monitoring within the heat exchanger or plenum airflow. Operating with a 140-170°F temperature range, it provides essential over-temperature protection by breaking the electrical circuit if internal temperatures exceed safe operating parameters. As the direct 8402-067 replacement, the 8402-067BX offers improved reliability for long-term cycling. Veteran technicians prefer this OEM Bard HVAC part for its exact fitment and terminal alignment, reducing installation time during field service. Whether you are maintaining a Bard wall-mount unit or performing a furnace limit switch repair, verifying the 7-inch insert length is vital for proper thermal response and equipment safety.

• OEM Compatibility: Specifically engineered as the manufacturer-approved successor for the Bard 8402-067.
• Precise Thermal Sensing: 7-inch probe allows for accurate core temperature readings in deep plenum configurations.
• Automatic Reset: Eliminates nuisance manual resets by restoring the circuit once temperatures drop below the 140°F cutout threshold.
• Rugged Construction: Built to withstand the high-vibration environment typical of industrial HVAC equipment.
• Critical Safety: Prevents heat exchanger damage and potential fire hazards by monitoring high-limit temperature levels.

Is the 8402-067BX compatible with older Bard units?
Yes, the 8402-067BX is the official updated version of the 8402-067. It maintains the same electrical ratings and 7-inch insertion depth required for legacy wall-mount systems.

What causes this limit switch to trip frequently?
Frequent tripping usually indicates restricted airflow, such as a dirty filter, blocked return, or a failing blower motor, causing the temperature to hit the 170°F limit.

Can I use a shorter probe if the 7-inch version is out of stock?
No. The 7-inch insertion depth is necessary to reach the specific thermal zone designated by the manufacturer’s safety protocols.

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.