Trane SWT1211 Switch R-410A where maintaining a positive seal

where maintaining a positive seal against lubricant and refrigerant migration is critical for volumetric efficiency

airtight seal between the power exhauster and the flue collector box

For 3-way switching

directly impacting the heating efficiency of Lennox-brand and compatible Allied or Armstrong units

Optimized Superheat: Maintains critical refrigerant balance to protect the compressor and improve cooling capacity

Trane SWT1211 Switch R-410A where maintaining a positive sealThe Trane SWT1211 (also categorized under SWT01211) is an essential high pressure cutout switch designed for HVAC system protection. This SPST cutout switch features a single pole single throw configuration, calibrated with a 300 405# pressure range. In the field, this means the switch is engineered to interrupt the electrical circuit (cut out) when system pressure reaches 405 PSI and reset (cut in) at 300 PSI, effectively preventing compressor damage