Trane SWT3398 650/550# High Pressure Switch

Description

Trane SWT3398 High Pressure Switch Overview

The Trane SWT3398 is an OEM high pressure switch engineered to protect refrigeration and HVAC systems from dangerously elevated pressures. Designed for direct replacement in compatible Trane equipment, this switch delivers dependable, automatic protection that helps prevent compressor damage and system failures.

Key Features

• Cut-out pressure: 650 PSI — opens circuit to shut down system on high-pressure condition
• Cut-in (reset) pressure: 550 PSI — restores circuit once pressure drops to safe operating level
• OEM Trane replacement part for precise fit and reliable performance
• Protects compressors and refrigerant circuits from over-pressure damage
• Designed for use in commercial and residential HVAC and refrigeration applications

Application

The SWT3398 high pressure switch is a critical safety component in refrigerant circuits. When system pressure rises to the 650 PSI cut-out threshold, the switch opens and interrupts the control circuit, shutting down the compressor to prevent damage. The system can resume normal operation once pressure falls back to the 550 PSI reset point. This OEM Trane part ensures compatibility and reliability in approved equipment.

Specifications

• SKU: SWT3398
• Brand: Trane
• Type: High Pressure Switch
• Cut-Out Pressure: 650 PSI
• Cut-In (Reset) Pressure: 550 PSI
• Application: HVAC and Refrigeration Systems