Trane SWT3173 Pressure Switch

Professionals in the field know that maintaining circuit integrity in Trane refrigeration and cooling systems requires precise actuation. The Trane SWT3173 Pressure Switch is a high-performance low-pressure cutout switch engineered to safeguard compressors from catastrophic failure due to loss of charge or restricted flow. As a Genuine Trane OEM replacement, this component ensures immediate response when system pressure reaches the 250 PSI open threshold, effectively breaking the control circuit to prevent vacuum operation or motor overheating. Integrating the SWT3173 into commercial HVAC systems or residential split units provides the exact specifications needed for refrigerant pressure monitoring without the risk of calibration drift associated with generic alternatives. This SPDT pressure switch features standard 1/4" terminals for seamless field installation and is a direct replacement for legacy part numbers, ensuring your HVAC compressor protection strategy remains uncompromising.

Key Benefits for Technicians

• System Safeguard: Automatically triggers a low-pressure cutout at 250 PSI to prevent compressor seize-up during low-charge conditions.
• OEM Reliability: Built as a Genuine Trane replacement part, ensuring 100% compatibility with original factory control circuits and wiring harness configurations.
• Robust Performance: Engineered for industrial-grade HVAC system protection, utilizing durable internal bellows and contacts that withstand high-cycle commercial applications.
• Broad Compatibility: Suitable for use across various Trane and American Standard models, including popular YHC and TSC series rooftop units.

Common Questions

What is the function of the 250 PSI open setting?
This setting defines the specific low-pressure cutout point where the switch opens the electrical circuit. It is designed to shut down the cooling cycle if the refrigerant pressure drops to 250 PSI, protecting the motor from operating outside its safe parameters.

Can I use the SWT3173 for both R-22 and R-410A systems?
Yes, this low-pressure switch is designed for compatibility with multiple refrigerants, making it a versatile HVAC service part for various generations of Trane equipment.

Is this a direct replacement for SWT03173?
Correct. The Trane SWT3173 is the manufacturer-designated replacement, sharing the same technical footprint, mounting profile, and electrical terminal configuration.

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.