Trane SWT03334X13790871010SC0522 Thermal Sensor Flow Switch

Description:

The Trane SWT03334 (X13790871010 / SC0522) thermal sensor flow switch is used in Trane commercial chiller and HVAC systems to monitor liquid flow and verify adequate circulation before allowing equipment operation. Utilizing thermal dispersion sensing technology, this 24 VAC/DC flow switch provides reliable flow detection to protect chillers, heat exchangers, and pumping systems from damage caused by insufficient water or glycol flow. Maintenance teams, HVAC service technicians, and facility engineers use this OEM flow switch for replacement, repair, preventive maintenance, and restoration of Trane commercial cooling systems. It is factory programmed with a 15 cm/s flow setpoint (SC0522).

Applications:

The Trane SWT03334 thermal sensor flow switch is designed to continuously monitor liquid flow within hydronic and chilled water systems, providing a switching output when flow falls below the programmed threshold. It is commonly installed in commercial buildings, central chiller plants, industrial process cooling systems, district cooling facilities, and HVAC water loops where dependable flow verification is essential for compressor protection and safe equipment operation.

Technical Specifications:

• Manufacturer Part Number (MPN): SWT03334
• Alternate Part Numbers: X13790871010, SC0522
• Manufacturer: Trane
• Product Type: Thermal Sensor Flow Switch
• Sensor Technology: Thermal Dispersion Flow Sensor
• Operating Voltage: 24 VAC/DC
• Flow Setpoint: 15 cm/s (Factory Programmed)
• Process Connection: 1/2 in. NPT Male
• Electrical Connection: M12 5-Pin Connector
• Output Type: Electronic Switching Output
• Protection Rating: IP67
• Function: Liquid Flow Detection and Equipment Protection
• Compatible Equipment: Trane Commercial Chillers and Hydronic HVAC Systems (model dependent)
• Compatible Fluids: Water and Water/Glycol Solutions (application dependent)
• Mounting Type: Inline Pipe Installation
• Installation: OEM Replacement Flow Switch
• Application Environment: Commercial HVAC, Central Chiller Plants, Hydronic Systems, Industrial Cooling Systems, and Process Cooling Equipment

Common Replacements:

• Trane SWT03334 (X13790871010 / SC0522) OEM Flow Switch
• Trane X13790871020 / SC0523 (35 cm/s setpoint, application dependent)
• Trane X13790871030 / SC0524 (45 cm/s setpoint, application dependent)