
Trane SWT3157 Pressure Switch
The Trane SWT3157 Pressure Switch is an OEM-grade low pressure switch designed specifically for R-410A and similar residential refrigeration and air conditioning systems. Engineered for precision monitoring, this SPST (Single Pole Single Throw) component provides a critical failsafe by opening the electrical circuit when suction line pressure drops below safe operational thresholds. This specific model features a factory-calibrated 25 PSI open (break) and 45 PSI close (make) setpoint, making it a direct match for various Trane and American Standard condensing units. For technicians performing HVAC pressure switch repair, the SWT3157’s direct mounting type and IP65-rated enclosure ensure durability in high-vibration and moisture-prone environments. By accurately sensing a loss of charge or indoor coil freeze-up, this switch protects the compressor from catastrophic damage due to low suction pressure. Whether you are addressing frequent system trips or a complete sensor failure, using a genuine HVAC OEM part maintains the factory-specified safety parameters and compatibility of the high-side and low-side protection circuits.
Key Benefits- Precise Calibration: Factory-set 25 PSI cutout and 45 PSI cut-in ensuring exact low pressure monitoring without the need for field adjustment.
- OEM Reliability: Direct standard Trane replacement part ensures seamless fitment and electrical compatibility with residential air handlers and heat pumps.
- Rugged Construction: Features a durable stainless steel disc and an IP65 enclosure for long-term resistance to environmental contaminants.
- Universal Terminal Compatibility: Standard electrical connections facilitate rapid HVAC pressure switch installation during field service calls.
What are the specific pressure ratings for this switch?
The SWT3157 is designed to open (shut down the system) at 25 PSI and automatically close (allow operation) at 45 PSI after the pressure stabilizes.
Is this switch compatible with R-410A systems?
Yes, this HVAC pressure switch is commonly utilized in Trane R-410A systems as a primary safety control for the low-pressure side of the refrigerant circuit.
Does this switch require a manual reset?
This model typically functions as an automatic reset pressure switch, meaning it will re-close once the pressure rises above the 45 PSI make point, though it should always be used in conjunction with terminal controls that may require manual diagnostic clearing.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $33.68
-65%$33.68
$11.79Trane SWT3157 Pressure Switch
The Trane SWT3157 Pressure Switch is an OEM-grade low pressure switch designed specifically for R-410A and similar residential refrigeration and air conditioning systems. Engineered for precision monitoring, this SPST (Single Pole Single Throw) component provides a critical failsafe by opening the electrical circuit when suction line pressure drops below safe operational thresholds. This specific model features a factory-calibrated 25 PSI open (break) and 45 PSI close (make) setpoint, making it a direct match for various Trane and American Standard condensing units. For technicians performing HVAC pressure switch repair, the SWT3157’s direct mounting type and IP65-rated enclosure ensure durability in high-vibration and moisture-prone environments. By accurately sensing a loss of charge or indoor coil freeze-up, this switch protects the compressor from catastrophic damage due to low suction pressure. Whether you are addressing frequent system trips or a complete sensor failure, using a genuine HVAC OEM part maintains the factory-specified safety parameters and compatibility of the high-side and low-side protection circuits.
Key Benefits- Precise Calibration: Factory-set 25 PSI cutout and 45 PSI cut-in ensuring exact low pressure monitoring without the need for field adjustment.
- OEM Reliability: Direct standard Trane replacement part ensures seamless fitment and electrical compatibility with residential air handlers and heat pumps.
- Rugged Construction: Features a durable stainless steel disc and an IP65 enclosure for long-term resistance to environmental contaminants.
- Universal Terminal Compatibility: Standard electrical connections facilitate rapid HVAC pressure switch installation during field service calls.
What are the specific pressure ratings for this switch?
The SWT3157 is designed to open (shut down the system) at 25 PSI and automatically close (allow operation) at 45 PSI after the pressure stabilizes.
Is this switch compatible with R-410A systems?
Yes, this HVAC pressure switch is commonly utilized in Trane R-410A systems as a primary safety control for the low-pressure side of the refrigerant circuit.
Does this switch require a manual reset?
This model typically functions as an automatic reset pressure switch, meaning it will re-close once the pressure rises above the 45 PSI make point, though it should always be used in conjunction with terminal controls that may require manual diagnostic clearing.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The Trane SWT3157 Pressure Switch is an OEM-grade low pressure switch designed specifically for R-410A and similar residential refrigeration and air conditioning systems. Engineered for precision monitoring, this SPST (Single Pole Single Throw) component provides a critical failsafe by opening the electrical circuit when suction line pressure drops below safe operational thresholds. This specific model features a factory-calibrated 25 PSI open (break) and 45 PSI close (make) setpoint, making it a direct match for various Trane and American Standard condensing units. For technicians performing HVAC pressure switch repair, the SWT3157’s direct mounting type and IP65-rated enclosure ensure durability in high-vibration and moisture-prone environments. By accurately sensing a loss of charge or indoor coil freeze-up, this switch protects the compressor from catastrophic damage due to low suction pressure. Whether you are addressing frequent system trips or a complete sensor failure, using a genuine HVAC OEM part maintains the factory-specified safety parameters and compatibility of the high-side and low-side protection circuits.
Key Benefits- Precise Calibration: Factory-set 25 PSI cutout and 45 PSI cut-in ensuring exact low pressure monitoring without the need for field adjustment.
- OEM Reliability: Direct standard Trane replacement part ensures seamless fitment and electrical compatibility with residential air handlers and heat pumps.
- Rugged Construction: Features a durable stainless steel disc and an IP65 enclosure for long-term resistance to environmental contaminants.
- Universal Terminal Compatibility: Standard electrical connections facilitate rapid HVAC pressure switch installation during field service calls.
What are the specific pressure ratings for this switch?
The SWT3157 is designed to open (shut down the system) at 25 PSI and automatically close (allow operation) at 45 PSI after the pressure stabilizes.
Is this switch compatible with R-410A systems?
Yes, this HVAC pressure switch is commonly utilized in Trane R-410A systems as a primary safety control for the low-pressure side of the refrigerant circuit.
Does this switch require a manual reset?
This model typically functions as an automatic reset pressure switch, meaning it will re-close once the pressure rises above the 45 PSI make point, though it should always be used in conjunction with terminal controls that may require manual diagnostic clearing.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.












