Trane CNT3720 Switch
The Trane CNT3720 Low Pressure Switch is a critical safety component designed for precise refrigerant circuit monitoring in residential and light commercial HVAC systems. This SPST auto-reset pressure control is engineered to protect the compressor from damage caused by low suction pressure, refrigerant loss, or coil freeze-ups. Featuring factory-calibrated setpoints, this switch opens at 8 PSIG and closes at 25 PSIG, ensuring operational stability within the refrigeration cycle. As a genuine OEM Trane replacement part, the CNT3720 provides exact physical and electrical compatibility with a wide range of Trane, American Standard, and Ameristar condensing units, maintaining the original engineering specifications for safety and performance.
Key Benefits for Technicians:
- System Protection: Effectively prevents compressor operation during low-charge conditions to avoid oil slugging and terminal failure.
- Direct Replacement: Fits existing wiring harnesses and mounting ports without the need for field modifications or brazing adapters.
- Reliable Calibration: Fixed 8# Open / 25# Close parameters ensure consistent trip points compared to adjustable aftermarket "universal" switches.
- Compact Footprint: Designed for tight service panels, allowing for quick installation and easy access during diagnostic testing.
Common Questions:
What are the electrical ratings for this switch?
The CNT3720 is typically rated for pilot duty applications in 24V control circuits, though it can handle standard inductive loads associated with contactor coils.
Does this switch require manual resetting?
No, this is an automatic reset switch that will close the circuit once the system pressure rises back to 25 PSIG.
Is this compatible with R-410A systems?
Yes, while specific to these setpoints, it is commonly utilized in various refrigerant applications where low-side monitoring at these PSIG levels is required.
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: $70.75
-65%$70.75
$24.76Trane CNT3720 Switch
The Trane CNT3720 Low Pressure Switch is a critical safety component designed for precise refrigerant circuit monitoring in residential and light commercial HVAC systems. This SPST auto-reset pressure control is engineered to protect the compressor from damage caused by low suction pressure, refrigerant loss, or coil freeze-ups. Featuring factory-calibrated setpoints, this switch opens at 8 PSIG and closes at 25 PSIG, ensuring operational stability within the refrigeration cycle. As a genuine OEM Trane replacement part, the CNT3720 provides exact physical and electrical compatibility with a wide range of Trane, American Standard, and Ameristar condensing units, maintaining the original engineering specifications for safety and performance.
Key Benefits for Technicians:
- System Protection: Effectively prevents compressor operation during low-charge conditions to avoid oil slugging and terminal failure.
- Direct Replacement: Fits existing wiring harnesses and mounting ports without the need for field modifications or brazing adapters.
- Reliable Calibration: Fixed 8# Open / 25# Close parameters ensure consistent trip points compared to adjustable aftermarket "universal" switches.
- Compact Footprint: Designed for tight service panels, allowing for quick installation and easy access during diagnostic testing.
Common Questions:
What are the electrical ratings for this switch?
The CNT3720 is typically rated for pilot duty applications in 24V control circuits, though it can handle standard inductive loads associated with contactor coils.
Does this switch require manual resetting?
No, this is an automatic reset switch that will close the circuit once the system pressure rises back to 25 PSIG.
Is this compatible with R-410A systems?
Yes, while specific to these setpoints, it is commonly utilized in various refrigerant applications where low-side monitoring at these PSIG levels is required.
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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Trane CNT3720 Low Pressure Switch is a critical safety component designed for precise refrigerant circuit monitoring in residential and light commercial HVAC systems. This SPST auto-reset pressure control is engineered to protect the compressor from damage caused by low suction pressure, refrigerant loss, or coil freeze-ups. Featuring factory-calibrated setpoints, this switch opens at 8 PSIG and closes at 25 PSIG, ensuring operational stability within the refrigeration cycle. As a genuine OEM Trane replacement part, the CNT3720 provides exact physical and electrical compatibility with a wide range of Trane, American Standard, and Ameristar condensing units, maintaining the original engineering specifications for safety and performance.
Key Benefits for Technicians:
- System Protection: Effectively prevents compressor operation during low-charge conditions to avoid oil slugging and terminal failure.
- Direct Replacement: Fits existing wiring harnesses and mounting ports without the need for field modifications or brazing adapters.
- Reliable Calibration: Fixed 8# Open / 25# Close parameters ensure consistent trip points compared to adjustable aftermarket "universal" switches.
- Compact Footprint: Designed for tight service panels, allowing for quick installation and easy access during diagnostic testing.
Common Questions:
What are the electrical ratings for this switch?
The CNT3720 is typically rated for pilot duty applications in 24V control circuits, though it can handle standard inductive loads associated with contactor coils.
Does this switch require manual resetting?
No, this is an automatic reset switch that will close the circuit once the system pressure rises back to 25 PSIG.
Is this compatible with R-410A systems?
Yes, while specific to these setpoints, it is commonly utilized in various refrigerant applications where low-side monitoring at these PSIG levels is required.
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.
