المفتاح الرئيسي De Dietrich 7306502

The main switch is a fundamental control component that isolates the entire boiler or burner from the electrical supply. It is typically located on the front panel or near the unit for easy access. When servicing or repairing heating equipment, turning off the main switch is a critical safety step. As a boiler spare part, this switch must be durable and reliable to handle the electrical load. A faulty main switch can lead to intermittent power issues or safety hazards. Replacing it with a quality component ensures proper isolation and peace of mind during maintenance.