Schneider Electric (Barber Colman) R820-PCB-A01 Input Board 30067439-890 The enclosing tube assembly

The enclosing tube assembly

Ensure the gaskets and friction rings are replaced alongside the 8026082 glass to prevent stress points

How do I test the Trane SEN1159 in the field

Key Benefits High Capacity Switching: The 21 Amp SPDT switch handles resistive loads

Utilizing an EPDM O-ring and a stainless steel return spring

Schneider Electric (Barber Colman) R820-PCB-A01 Input Board 30067439-890 The enclosing tube assemblyThe Schneider Electric R820 PCB A01 is a critical replacement 24Vac electronic PCB input board engineered for both single phase and three phase HVACR systems. Designed to maintain precise control logic within older Barber Colman architectures, this HVAC control board facilitates seamless communication between input sensors and heavy duty contactors. It serves as the verified R820 PCB A01 direct replacement for legacy part numbers 021 0474 and KEL021