pääkatkaisin
Pääkatkaisin, often translated as main switch or master switch, is a fundamental electrical safety device. Its primary function is to disconnect the entire electrical supply to a building, piece of equipment, or a specific circuit. This is crucial for several reasons, including maintenance, emergency situations, and preventing electrical hazards.
In residential settings, the pääkatkaisin is typically located in the main electrical panel, also known as
For industrial machinery and larger systems, a pääkatkaisin serves a similar purpose but may be physically
The operation of a pääkatkaisin can be manual, requiring a person to physically flip a lever or