1300080115

1300080115 is an automatic protection signal switch developed by Shandong CNC Huachen Electric Technology Co., Ltd., which is thus named as it has a serial number of 1300080115. This device is mainly used in the secondary circuit of low-voltage electrical equipment, such as power transformers, motors and generators, for automatic grounding protection. It can automatically cut off when the current is over a certain value, and then need to be manually reset after the fault is eliminated.The working principle of 1300080115 is based on the physical quantity that heat changes with current. It has two operating states: Normally Inductive State and Short Circuit State. In its Normally Inductive State, the fixed bimetal disc is in a free state, and the lower end is connected with the reset button. When the action current Ia is more than or equal to the setting current Is, the heat generated by the temperature rise in the winding generates a certain mechanical force to act on the bimetal disc. This force is proportional to the square of the current, so that the bimetal disc can be flipped to make the contacts separated from each other. In the case of short circuit, the value of magnetic current Im is much greater than that of the action current, and the temperature rise of the working part of the device during the fault time is also obvious, its thermal action is stronger, thus its restoring force through the reset button to the bimetal disc is also greater, so that the bimetal disc is rotated more quickly and completely open the contact or separated from each other.1300080115 can be applied to the protection of all lines and equipment with rated current of 16A-80A in secondary circuit of AC 50Hz, rated voltage of 220V-415V. It is applicable to the protection against overload, short circuiting, hot line operation and other short circuit faults in the low voltage circuit. Due to its simple and reliable operation, it has been widely used in various low-voltage electrical equipment such as transformers and motors.1300080115 also has certain advantages in terms of characteristics. Its strong electrical life is up to 6500 times, its mechanical life is up to 10000 times, and its heat resistant temperature is up to 80℃. In terms of installation, it adopts direct installation structure, which greatly simplifies the installation steps and reduces the installation cost. In addition, its structure is compact and reliable.In summary, 1300080115 is a automatic protection signal switch with many advantages, such as strong electrical and mechanical life, reliable operation, simple installation and compact structure. Therefore, it is widely used in the secondary circuit of low-voltage electrical equipment, such as power transformers and motors, for automatic grounding protection.

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