Bard 8402-044 Limit Switch

The Bard 8402-044 is a precision-engineered L180F manual reset limit switch designed specifically for heavy-duty HVACR applications. This upper limit safety control is a critical safety component that monitors heat exchanger temperatures, effectively breaking the electrical circuit if the ambient temperature exceeds the fixed 180-degree Fahrenheit threshold. As a dedicated Bard replacement part, this switch ensures high-limit protection for various Bard wall-mount heat pumps and air conditioning units. The manual reset functionality (M/R) is a vital safety feature for contractors, preventing the system from automatically restarting after a high-temperature event. This requirement forces a physical inspection of the equipment to identify potential airflow obstructions or mechanical failures before resuming operation. Built for the rigors of field service, the 8402-044 offers a reliable, direct-fit solution for maintaining HVAC system safety and preventing catastrophic compressor or heat exchanger damage. Key Benefits:

• High-Temperature Protection: Fixed L180F trip point ensures the system shuts down before reaching dangerous thermal levels.
• Manual Reset Security: Prevents unsafe automatic cycling by requiring a technician to manually reset the switch after a trip.
• OEM Compatibility: Guaranteed fit for Bard equipment, reducing installation time and ensuring electrical specifications match original factory standards.
• Industrial Durability: Engineered to withstand the high-cycle demands of commercial and residential HVAC environments.

Common Questions:

What causes a Bard limit switch to trip?
Common causes include restricted airflow from dirty filters, a failing indoor blower motor, or closed supply registers that lead to excessive heat buildup in the cabinet.

Can I substitute an auto-reset switch for the 8402-044?
No. This is a manual reset safety control. Forcing an automatic restart on a system that has exceeded its thermal limit can lead to equipment damage or fire hazards.

Is this switch compatible with non-Bard systems?
While the technical specs are 180F M/R, it is optimized for Bard HVAC units. Always verify the mounting bracket and terminal configuration against your specific model's wiring diagram.

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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.