Source1 2531814000 Limit Switch 150/120 Open Close Auto Reset Replacement S1-02531814000

Product Description

The SOURCE1 2531814000 is an OEM replacement limit switch designed for use in residential and light commercial HVAC systems. Limit switches are a critical safety component in furnaces and air handlers. They monitor temperature conditions inside the unit and cut power to the burner or heating element when a set threshold is reached. This protects the heat exchanger from overheating and prevents equipment damage or fire hazard. When conditions return to normal, an auto-reset limit switch like this one restores operation automatically without requiring a manual reset by the technician. The 2531814000 operates at 150 degrees open and 120 degrees close, meaning it opens the circuit at 150 degrees and closes it again once the temperature drops back to 120 degrees. This open/close configuration is standard in many York and Johnson Controls manufactured furnaces and air handlers. HVAC technicians rely on direct OEM replacement limit switches to maintain original equipment performance and avoid callbacks. Using a manufacturer-matched part ensures proper calibration, correct mounting fit, and reliable cycle life. This switch is compatible with popular York units including models 2EE04707324, 1LD0407, and 1BS0405 among others. At just 0.055 pounds and measuring 3.2 inches long, 2.3 inches wide, and 0.8 inches tall, the 2531814000 is a compact, easy-to-install component. HVAC service professionals replacing a faulty limit switch, troubleshooting a furnace that short-cycles, or performing a preventive maintenance swap will find this part a reliable direct fit for supported York equipment.

• OEM replacement limit switch rated at 150 degrees open and 120 degrees close for accurate thermal protection
• Auto-reset design restores system operation automatically once temperature returns to safe range
• Compact form factor fits directly into supported York and Johnson Controls furnaces and air handlers

Product Highlights

The SOURCE1 2531814000 delivers factory-matched thermal protection for York HVAC systems, making it a dependable choice for HVAC technicians performing limit switch replacements or safety component upgrades.

Product Information

Standard Information

• Brand: SOURCE1
• Manufacturer Part Number: 2531814000

Technical Specifications

• Product Type: Limit Switch
• Configuration: Open/Close
• Voltage: 150/120
• Reset Type: Auto
• Length: 3.2 inches
• Width: 2.3 inches
• Height: 0.8 inches
• Weight: 0.055 pounds