Description
The Trane CNT3666 is a single‑pole, single‑throw (SPST) pressure switch designed to monitor air pressure within HVAC systems and ensure safe operation of heating or cooling equipment. It detects changes in air pressure (set around 0.15" water column) and opens or closes a control circuit, helping prevent unsafe conditions or equipment faults.
Key Features
- Pressure Rating: ~0.15" Water Column (WC) — ideal for low‑pressure detection in HVAC draft or airflow circuits.
- Switch Type: SPST (Single Pole, Single Throw) for simple ON/OFF control.
- Connection: 1/4" barbed fitting for easy hose attachment.
- Compact design: Quick‑connect terminals for straightforward replacement.
- OEM grade: Designed to meet original equipment specifications for compatibility and reliability.
