Description
The Trane CNT3520 is a differential pressure switch engineered to monitor airflow pressure in HVAC systems. It uses a single pole, double throw (SPDT) switch mechanism that activates or deactivates electrical circuits when specified pressure thresholds are reached, helping protect equipment from airflow blockages and improper operation.
Key Features
- Monitors air pressure differences at approximately 0.15″ water column (WC) set point — ideal for detecting low air pressure conditions in furnace and air handler systems.
- SPDT (Single Pole Double Throw) switch provides versatile control options.
- Designed for 24 VAC control circuits common in HVAC equipment.
- Compact design with quick connect terminals for easy wiring and replacement.
- Helps ensure proper system pressure before allowing blowers, inducer motors, or other components to operate.
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