Source1 2537494000 Limit Switch Auto Reset L170-30F

Product Description

The SOURCE1 2537494000 is an auto-reset limit switch designed for residential and light commercial HVAC systems. Limit switches are critical safety components in furnaces and air handlers. They monitor heat levels inside the unit and cut power to the burner or heating element when temperatures rise above a safe threshold. Once the temperature drops back to a safe level, an auto-reset limit switch like this one restores normal operation without requiring a technician to manually reset it. This saves time on service calls and reduces unnecessary downtime for the homeowner or building occupant. The SOURCE1 2537494000 carries a temperature rating of L170-30F, meaning it opens the circuit at 170 degrees Fahrenheit and closes again when the temperature falls 30 degrees, returning to 140 degrees Fahrenheit. This tight differential helps protect heat exchangers from repeated thermal stress, which is a common cause of premature failure in residential furnaces. HVAC technicians rely on OEM-grade limit switches because they match the original electrical and mechanical specifications of the equipment. Using a correctly rated limit switch ensures the safety circuit behaves exactly as the manufacturer intended, protecting both the equipment and the occupants of the building. This part is compatible with multiple York and associated brand units, including models 1HW0405, 2EE04705624, and AC060X1321, among others. It measures 6.05 inches in length, 3.8 inches in width, and 0.95 inches in height, making it a compact component that fits into tight control board and plenum areas. When replacing a faulty or suspect limit switch, always verify the temperature rating on the existing part to ensure a like-for-like swap. The SOURCE1 brand delivers reliable OEM-quality replacement parts for York and affiliated HVAC equipment lines.

• Auto-reset operation restores normal function once safe temperatures are reached, reducing service call time
• Temperature rating of L170-30F protects heat exchangers and burner assemblies from overheating damage
• OEM-grade construction ensures compatibility and reliability in York and related HVAC units

Product Highlights

The SOURCE1 2537494000 auto-reset limit switch provides dependable overheat protection for furnaces and air handlers, matching original manufacturer specifications for a direct replacement installation.

Product Information

Standard Information

• Brand: SOURCE1
• Manufacturer Part Number: 2537494000

Technical Specifications

• Reset Type: Auto Reset
• Temperature Rating: L170-30F
• Length: 6.05 inches
• Width: 3.8 inches
• Height: 0.95 inches