![]() The pole represents the number of individual power circuits that can be switched. Mechanical switches can be classified into different types based on several factors such as method of actuation (manual, limit and process switches), number of contacts (single contact and multi contact switches), number of poles and throws (SPST, DPDT, SPDT, etc.), operation and construction (push button, toggle, rotary, joystick, etc.), based on state (momentary and locked switches), etc.īased on the number of poles and throws, switches are classified into following types. These are activated by semiconductor action. Mechanical Switches are physical switches, which must be activated physically, by moving, pressing, releasing, or touching its contacts.Įlectronic Switches, on the other hand, do not require any physical contact in order to control a circuit.
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