and Series 3-CT versions

Precise Thermal Control: Calibrated for 180°F cut-out and 160°F cut-in to maintain strict furnace safety parameters

Technical Precision: Accurately manages start capacitor cutout based on back-EMF

ensuring the BACnet or Analog controller receives a clean

Schneider Electric (Barber Colman) 2378-501 Relay Els PW 17895 and Series 3-CT versionsThe Schneider Electric (Barber Colman) 2378 501 Relay is a high performance pneumatic amplifying relay designed for proportional signal control in HVAC systems. Engineered as a Pneumodular component, this device provides a definitive 2: 1 amplifying function, doubling the input signal pressure to the branch line. This is essential for contractors managing larger actuators or terminal units that require higher pressure than the standard controller