Trane 20PS008MA300K190K 056R04 High Pressure Switch

Description:

The Trane American Standard 20PS008MA300K190K (056R04) high pressure switch is used in commercial HVAC and refrigeration systems to monitor refrigerant discharge pressure and protect compressors from excessive high-pressure conditions. Commonly installed in Trane and American Standard rooftop units, chillers, packaged air conditioning systems, and commercial refrigeration equipment requiring automatic high-pressure safety shutdown. Maintenance teams, HVAC service technicians, and system integrators use this high pressure switch for replacement, preventive maintenance, repair, and restoration of HVAC safety control systems.

Applications:

The Trane American Standard 20PS008MA300K190K high pressure switch is designed to continuously monitor refrigerant system pressure and interrupt compressor operation whenever discharge pressure exceeds the preset safety limit. It is commonly used in commercial rooftop units, chillers, industrial cooling equipment, refrigeration systems, and building climate control installations where reliable compressor protection and system safety are essential.

Technical Specifications:

• Manufacturer Part Number (MPN): 20PS008MA300K190K
• Secondary Part Number: 056R04
• Manufacturer: Trane / American Standard
• Product Type: High Pressure Switch
• Switch Type: Refrigerant High Pressure Safety Switch
• Pressure Setting: 300 PSI Cut-Out / 190 PSI Cut-In
• Function: Compressor High Pressure Protection
• Contact Type: SPST Normally Closed
• Reset Type: Automatic Reset
• Pressure Connection: 1/4 in SAE Female Flare
• Electrical Connection: Two Quick-Connect Terminals
• Compatible Equipment: Trane and American Standard Commercial HVAC Systems
• Compatible Applications: Rooftop Units, Chillers, Air Conditioning Systems, and Refrigeration Equipment
• Mounting Type: Threaded Pressure Connection
• Application Environment: Commercial HVAC, Refrigeration Systems, Industrial Cooling Equipment, and Building Climate Control Systems

Common Replacements:

• Trane CNT03795 High Pressure Switch
• Emerson ALCO PS1 Series High Pressure Switch
• Danfoss KP5 Pressure Switch