Trane SWT03172 High Pressure Cutout Switch 800 Psi

Product Description

The TRANE SWT03172 is a high pressure cutout switch rated at 800 psi in the closed position, designed to protect refrigerant circuits in commercial and residential HVAC systems. When refrigerant-side pressure exceeds the rated threshold, this switch opens the control circuit, triggering a system shutdown before compressor or refrigerant-side damage can occur. It is an OEM Trane part, intended for installation by licensed HVAC technicians during preventive maintenance, system troubleshooting, or compressor replacement procedures.

This switch is used in Trane split-system and packaged HVAC equipment where high-side refrigerant pressure monitoring is required. It is typically wired into the low-voltage control circuit and mounted on the high-pressure refrigerant line or manifold. Applications span light commercial and residential central air systems where refrigerant overpressure protection is a code and manufacturer requirement.

Key Features

• Rated at 800 psi closed, providing high-side overpressure protection for refrigerant circuits
• OEM Trane replacement part for accurate fit and reliable electrical contact behavior
• Wired into low-voltage control circuit to trigger safe system shutdown on overpressure event
• Supports compressor protection by interrupting operation before pressure-side damage occurs

Compatibility

Designed as an OEM-style replacement high pressure cutout switch for Trane HVAC systems requiring refrigerant-side overpressure protection.

Installation Notes

Installation should be performed by a licensed HVAC technician with EPA Section 608 refrigerant handling certification. Recover refrigerant and relieve system pressure before disconnecting the existing switch. De-energize all power to the unit at the disconnect before handling any control wiring. Refer to the equipment wiring diagram and applicable local mechanical codes when reconnecting the control circuit.

Technical Specifications

• Pressure Rating: 800 psi
• Switch State at Rating: Closed
• Switch Type: High Pressure Cutout

Standard Information

• Brand: TRANE
• Manufacturer Part Number: SWT03172