Description
The Trane SWT3774 (often found in HVAC parts listings and equivalent to pressure control switches like CNT3774) is a genuine OEM air pressure switch used in Trane heating and cooling systems to monitor airflow or draft conditions and help protect key components from unsafe operating conditions.
Key Features
- Air/Pressure Control Function: Detects changes in internal air pressure or draft and opens/closes an electrical circuit accordingly to ensure safe operation of the furnace or air handler.
- Single Pole, Single Throw (SPST) Action: Offers a simple yet reliable switching mechanism that reacts quickly to pressure changes.
- OEM Compatibility: Designed to meet original Trane specifications — ideal for replacement in compatible systems.
- Compact Design: Fits into pressure tubing lines with standard connections for easy swap out during maintenance or repair.
