Siemens Combustion THERMAL-75X75 Barrier 322055-301 Use with incompatible gases or

Use with incompatible gases or petroleum-based liquids may damage the internal components

This industrial thermostat features a vapor charge sensing element and a robust gold-plated contact system that ensures electrical reliability in low-current control circuits

OEM Compatibility: Drop-in replacement for specific Trane and American Standard 2-ton systems

A dark green color indicates that the refrigerant is in a "dry" state within the safe operating range

The forged brass body is rated for up to 300 psi static pressure

Siemens Combustion THERMAL-75X75 Barrier 322055-301 Use with incompatible gases orThe Siemens Combustion THERMAL 75X75 is a professional grade thermal barrier engineered to protect Siemens QRA flame detectors from high ambient temperatures in industrial burner systems. Rated for continuous operation in environments up to 250F (121C), this 75x75 configuration acts as a critical thermal insulator between the heat source and the UV flame scanner housing. By mitigating thermal stress on sensitive internal components like the UV cell,