
Selector Switches

Selector switches are electrical switches that allow the user to select between different positions or functions. They are commonly used in machinery and other industrial applications to control the operation of equipment.
The selector switch typically consists of a rotary knob or lever that can be turned or moved to different positions. Each position corresponds to a different function or setting. The switch may have a range of positions, from 2 to 11 or more.
The selector switch may be a maintained or momentary type. A maintained switch stays in the selected position until manually changed, while a momentary switch returns to its default position when released. Some selector switches also have a spring return feature, which returns the switch to its default position when released.
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More Information about Selector Switches
Selector switches may have an IP rating, indicating their resistance to dust and water. They may also be non-illuminated or illuminated, with blue, green, red, or yellow indicating the selected position.
The selector switch typically includes a selector switch actuator and a contact block, which provides electrical contacts for the different switch positions. The actuator may be made of plastic or other materials, and the contact block may have a variety of sizes and configurations.
Selector switches are available in a variety of models and sizes from different manufacturers. They can be installed on a panel or other devices, and are operated by an operator. When ordering a selector switch, the number and size of the contact blocks, the position of the key, and other features may need to be specified.
Maintaining NEMA 4 Rating When Making Enclosure Penetrations
Cutouts are very common when modifying enclosures for push buttons, indication lights, conduit entries or mounting hardware. Cutting into an enclosure runs the risk of eliminating the protective nature of the NEMA rated attributes. Proper steps must be followed in order to preserve the NEMA rating of an enclosure.
Devices mounted to the enclosure must have the same NEMA rating as the enclosure.
This means that if the devices are installed to the manufacturer's specifications, they will be able to maintain the NEMA rating of the enclosure.
Water tight conduit hubs must be used when running wire through a cutout in an enclosure.
There are many different types of conduit hubs that are used to secure conduit to an enclosure. However, only certain conduit hubs are rated for a watertight seal. By using water tight hubs, the NEMA rating of the enclosure is maintained.
Bonded washers are necessary when mounting hardware to an enclosure.
If standard mounting hardware is used, the NEMA rating of the enclosure will no longer be maintained. Bonded washers have rubber gaskets that make a watertight seal around the drilled hole. It is also important to make sure the material used for the bonded washer matches the material of the enclosure. Stainless steel enclosures require stainless steel bonded washers.