It is recommended to install external overcurrent protection on the secondary side to protect downstream 24V components

Reliable Linkage: Provides a robust connection point for actuator linkages

allowing for more accurate readings without requiring 3-wire or 4-wire compensation in many applications

000-ohm nominal resistance at 77°F provides the base signal for the Selectra modulation loop

Installing a 2-stage motor on a single-stage system will lead to harness mismatch and pressure switch failures

Schneider Electric (Barber Colman) 2374-401 Relay Freon It is recommended to installThe Schneider Electric 2374 401 Air Motion Relay, formerly under the Barber Colman brand, is a critical pneumatic component engineered for precise HVAC air pressure sensing and airflow monitoring. Designed to function as a differential pressure switch, this device triggers a pneumatic signal based on the presence or absence of air velocity. It operates with a minimum 0. 15" W. C. setpoint, making it sensitive enough to detect subtle changes in suction