York S1-373-13300-604 Limit Switch

For service technicians managing 3 to 6-ton rooftop units, the York S1-373-13300-604 Limit Switch is a critical safety component designed for high-limit protection. This HVAC auto reset limit switch is engineered to monitor primary heat exchanger temperatures, featuring a precise 105-165F temperature range. When discharge temperatures exceed the 165°F threshold, the switch opens the control circuit to prevent thermal overloading, automatically resetting once the system cools to 105°F. Built for 125-250 VAC electrical systems, this 4-inch insert limit switch ensures consistent compatibility with York D4CG048N10325A models and similar rooftops. Integrating a genuine OEM York limit switch is essential for maintaining factory safety standards and preventing premature compressor or heat exchanger failure. Proper installation of this high limit safety control provides the reliable thermal cycling necessary for commercial HVAC longevity and operational safety.

• Precise Thermal Protection: Maintains safety thresholds between 105°F and 165°F to prevent equipment overheating.
• Automatic Reset Functionality: Minimizes system downtime by restoring the circuit once safe operating temperatures are reached.
• Universal Voltage Compatibility: Rated for 125-250 VAC, making it suitable for a wide range of commercial power configurations.
• Simplified Installation: Features a standard 4-inch insert depth for direct replacement in 3-6 ton rooftop units.

What happens if the limit switch fails to reset?
If the switch stays open, the system will typically fail to initiate the heating cycle. This often indicates either a faulty switch or an underlying airflow issue that must be corrected before replacing the part.

Is the S1-373-13300-604 cross-compatible with other brands?
While functionally similar to other 105-165F switches, this specific model is a genuine OEM part optimized for York and Johnson Controls equipment to ensure exact bracket fitment and electrical calibration.

How do I verify if this 4-inch insert is the correct size for my unit?
Verify your model number; this part is typically utilized in York 3-6 ton rooftop units. Measure the old probe depth to ensure the 4-inch sensor reaches the appropriate section of the air stream.

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.