[miniature switch LS single phase 16 amp type C](https://www.automation24.ir/product-1698/%DA%A9%D9%84%DB%8C%D8%AF-%D9%85%DB %8C%D9%86%DB%8C%D8%A7%D8%AA%D9%88%D8%B1%DB%8C-ls-%D8%AA%DA%A9%D9%81%D8%A7% 25D8%B2-16-%D8%A2%D9%85%D9%BE%D8%B1-%D8%AA%DB%8C%D9%BE-c)
miniature key:
Regarding the miniature switch, it can be said that the fuse is a protective device that is used in electrical equipment and circuits so that when the current exceeds the permissible limit, the circuit is cut off so that other equipment is not damaged.
## Miniature keys use two mechanisms for their operation.
Bitmal function for overload protection
Magnetic function for short circuit protection
Miniature switches are divided into 2 single-phase and three-phase parts in terms of the number of bridges, and in terms of the cut-off time, they are divided into fast and slow working conditions. They are also divided into K, D, C, B and Z types in terms of application.
Type B miniature switch: This type of miniature switch is mostly used in the home and cuts off the overload current between 3 and 5 times the rated current in a certain time. These types of switches are considered fast-acting.
C type miniature switch: This type of switch is mostly used in industry and cuts the overload current between 5 and 10 times the rated current in a certain time. This type of switch is considered a slow-acting type.
D-type miniature switch: This type of switch is mostly used in certain industrial applications such as transformers and cuts the overload current 10 to 20 times the rated current.
K type miniature key: This type of key is used in transformer and engine. It is usually between types C and D.
Z-type miniature switch: This miniature will issue a cut-off command at a specific time when the passing current exceeds the rated current. This key is used in very sensitive circuits.
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Note: the miniature keys can be equipped with peripheral devices to detect on and off status or alarms.
### Points that must be observed when buying a miniature key:
Miniature key workflow
Miniature key type (depending on the place of use)
Accessories
The number of its bridges
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