s1 s2 s3 De Dietrich 7776738

The terminal block connection lne s1 s2 s3 is a wiring interface used to securely connect electrical lines in boiler and burner systems. This component facilitates proper termination of power and signal cables, ensuring safe and reliable operation of heating equipment. Whether you are installing a new gas burner or performing maintenance, this terminal block helps organize connections for the line, neutral, and additional circuits. It is a practical spare part for technicians working on boiler control panels.