[Schneider three-phase 16 amp type C miniature switch (click here to buy the product)](https://www.automation24.ir/product-595/کلی?% AF-مینیاتوری-اش?% 86ایدر-سه-فاز-16-آم About the miniature switch, it can be said that the fuse is a protective device that is used in electrical equipment and circuits. It is used to cut off the circuit when the current exceeds the permissible limit so that other equipment is not damaged. Miniature switches use two mechanisms for their operation.
Bitmal function for overload protection
Magnetic function for short circuit protection
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\ r\nIn terms of the number of bridges, the miniature switches are divided into 2 single-phase and three-phase parts, and in terms of the cut-off time into two fast and slow states. They are also divided into K, D, C, B and Z types in terms of use.\ r\n
Type B miniature switch: This type of miniature switch is mostly used for home use and cuts off the overload current between 3 and 5 times the nominal current in a certain time. These types of switches are considered fast-acting. nType C 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. It is mostly used in special industries such as transformers and cuts the overload current 10 to 20 times the rated current. K type miniature switch: This type of switch is used in transformers and motors. Its function is between type C and D. Z type miniature switch: This miniature will issue a shutdown command at a specific time when the passing current exceeds the rated current. This key is used in very sensitive circuits.
Note: In the case of miniature keys, peripheral devices can be installed to detect the on and off status or alarms.
Points that should be observed when buying a miniature key :
1. Working flow of miniature key
2. Type of miniature key (depending on the place of use)
3. Peripheral equipment
4. Number of its bridges
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