Electronic and Electrical Symbols - Symbols of Single-Line Switches / Unifilar Representation single-line of switches, push-buttons and other devices responsible for establishing, sustaining and interrupt the electrical current in low power circuits.
Electronic and Electrical Symbols - Symbol of Switches The switches are electrical, electronic or mechanical designed to interrupt or divert the flow of electric current or other signals in an electrical circuit
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File:Symbol change over switch (two-pole).svg - Wikimedia Commons