HEJ-JK

Fuseholders are devices dedicated to the safe installation and operation of fuses used to protect electrical circuits. The term includes all types of fuse disconnection and fuse installation equipment, from high breaking capacity (HBC) fuse holders, such as HEJ-JK, to low breaking capacity (LBC) types. To provide a secure link for the fuse body, HEJ-JK applications often use a rotating cage or insert to keep the fuse in place in combination with an independent contact carrier. This provides a reliable connection to the fuse body which is then connected to the contact spring for electrical continuity.

HEJ-JK fuseholders are used for over-current and over-voltage applications in commercial, industrial, and residential installations. The HEJ-JK type fuseholder can be used in a multitude of locations such as in panelboards, switchgear, motor starters, distribution centers, motor control centers, during factory testing, and for needs other than the above. The product is designed for easy and safe installation.

HEJ-JK fuseholders are available in a range of current ratings and ratings can be made to suit almost any requirement, whether it be high speed, normal speed or ultra-fast. The fuseholders use a robust and reliable contact system to ensure quality performance in all types of environment and provide a reliable connection between the fuses and the contacts. The insertion of the fuse is also clearly visible when installed, which provides a visual indication of a secure and positive connection. As a safety feature the contact-lock mechanism prevents accidental loosening or removal of the fuse.

The working principle of HEJ-JK fuseholders is based on a mobile contact which is securely inserted into a resistor or specially designed cavity. The contact has contact surfaces in contact with the fuse when inserted. When current is supplied to the fuseholder, the electricity travels to the fuse via the contacts and flows through the fuse wire. This process causes a small current to pass through the contact to the resistor reducing the voltage of the current and generating heat. When the correct voltage is detected, the contacts automatically open, breaking the connection to the fuse and opening the circuit.

In addition to the basic breaking current, the current needed to open the contacts can also be adjusted by mounting different resistors in the cavity. This allows the fuse to be used in various applications and effectively protects the circuit from over current. The contact system also provides reliable performance in a range of environmental and climatic conditions, including extreme temperature and humidity fluctuations

HEJ-JK fuseholders are invaluable components in modern electrical systems. This type of fuseholder provides an efficient and reliable way to protect the circuits from over-current. The contact system offers a secure connection which is both visible and safe and is designed to protect the circuits from any over-current. Additionally, the versatility of the device makes it suitable for any environment or application as well as performing reliably in extreme conditions. As such, it is a highly recommended product for any situation involving the safe isolation and operation of fuses.