Rocker Switches

Rocker Switches

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What Are Rocker Switches

rocker switches

Rocker Switches house a button for operation that can be pressed on either end like a seesaw to connect or disconnect an electrical circuit.
They are often used as ON/OFF switches on the main power supplies for electronic devices.

The name “rocker switch” comes from the rocking motion that the switch makes when the button is pressed.
It is also sometimes called a seesaw switch.

Rocker Switch Features

Small Size High-capacity Switching Our improvements to the contact materials and switch design has enabled us to produce miniature ON/OFF switches for the main power supplies on office automation and other equipment.
Tetains the Set Value The operation button itself clearly indicates the ON/OFF status, allowing for a visual confirmation to prevent incorrect operation.

Rocker Switches are used to turn the main power supplies on electronic devices ON and OFF.

Rocker Switch Models

Rocker Switches have three ratings (the maximum current that the switch can handle): 10A, 16A and 20 A.
The rating almost completely determines the external size of the switch, but we are working to miniaturize these switches further through improvements to the design and contact materials.
For example, we have successfully miniaturized the portion that protrudes from the panel surface of our 16 A rated rocker switch from 25 mm × 32 mm to 17 mm × 24 mm and even further down to 15 mm × 21 mm. We also have Sealed Types, Illuminated Types and Resettable Types.

20A           resettable types for the image in row 20A, column 27x37mm
Resettable Types
16A   miniature types for the image in row 16A, column 15x21mm
Miniature Types
sealed types for the image in row 16A, column 17x24mm
two-button types for the image in row 16A, column 17x24mm
Two-button Types
illuminated types for the image in row 16A, column 25x32mm
Illuminated Types
10A   miniature types for the image in row 10A, column 15x21mm
Miniature Types
    15×21mm 17×24mm 25×32mm 27×37mm Panel footprint
(D × W)
  • Small

  • Large

First, determine the rating of the Rocker Switch you need based on the current capacity to switch.

Rocker Switch Structures

Sealed Rocker Switches consist of an operation button, sealing rubber, semi-elliptical spring, internal case, lid, cover, contacts and terminals.

a structure of a rocker switch

Operation Button
This button is manually pressed by a person to switch between ON and OFF.
Some switches have symbols printed on the button to indicate the ON/OFF status.
Sealing Rubber
This is a rubber component used to seal the switch.
It prevents moisture and foreign objects from entering the internal case that contains the contacts and other core components of the switch.
Semi-elliptical Spring
This is a semi-elliptical leaf spring with a contact attached to the end.
When the operation button is in the ON position, the semi-elliptical spring instantly moves the contact to the fixed contact and exerts high contact force for a stable contact between the two.
However, when in the OFF position, the release force of the contact is increased which also helps to prevent contact welding.
Internal Case and Lid
The components that make up the switch mechanism (terminals, contacts and semi-elliptical spring) are stored in the internal case, which is then sealed on top with the lid.
The cover is a resin component that covers the sealed internal case and is used to secure the sealing rubber into place.
The cover is also designed so that the switch can be easily mounted into a square hole in a panel.
Contacts and Terminals
The fixed contact is made by attaching a contact to the end of one of the terminals.

Rocker Switch Applications

Rocker switches are used in a lot of common pieces of technology such as monitors, printers and measuring devices. Check out some of the applications of rocker switches below.

Power Supply Switches for Consumer Electronics, PC Peripherals, and Office/Commercial Equipment

  • Air purifiers, dehumidifiers, etc.
  • Monitors, copiers, printers, etc.
  • Power supplies, measuring equipment, etc.
rocker switches in monitors
copiers use rocker switches
rocker switch applications in printers
power supplies use rocker switches
Power Supplies
rocker switches in measuring devices
Measuring Devices