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Fuse heads

Fuse heads are one of the components of an electrical installation. They are used in many electrical systems of buildings and apartments. They enable the correct and safe installation of many types of fuses in a socket. The material used to make the fuse head is not electrically conductive . The fuse heads can be replaced by unqualified persons, and their design allows for a visual assessment of the fuse-link's condition. In the event of a short circuit in the installation, an overload of the electric circuit is prevented . Then it is enough to unscrew the fuse head and replace the fuse with a new one with the same amperage.

Fuse heads - types

Effective protection of household electric receivers is possible with the use of various types of fuses. Traditional sockets adapted to the installation of fuse links are found in many electrical installations in buildings, warehouses and industrial halls. In all these places we find fuse heads in several possible variants:

  1. fuse heads for mounting D0 type fuse links. This type of construction allows the space needed to install the protection system to be reduced. The body of these elements is lower, so it is possible to use smaller size switchgears and assembly boxes. This group includes E14, E16 and E18 fuse heads, suitable for D01 and D02 fuses. In this case, it is possible to use calibration inserts in fuse sockets. An E33
  2. Type D fuse heads - allow to install and protect standard size fuse links in the socket. The sizes of this element in this group are E16, E27 and E33. An example is a ceramic fuse head by Hager - DIII; E33 with a current value of 63A and AC voltage up to 750V.

Fuse heads are used in both single-pole, double and triple modular sockets. Due to the complete isolation from the environment, their installation is possible as a standalone device in a set with a base, as well as an element to be mounted in switchboards or mounting cabinets. The fuse base housings together with the heads are equipped with various types of terminals. The sets can also be mounted in holders on TH 35 rail. All types of fuse heads have the option of visual inspection of the condition of the fuse link. The oval opening is usually secured with a glass protection. Sealable versions are available to limit unauthorized access to the electrical system.

Characteristics of fuse heads

Fuse heads are most often made of plastic or ceramic. The use of fully insulating materials helps to prevent short circuits when handling electrical equipment and lines. It protects completely against accidental touch and electric shock. The nominal values ​​of the operating currents for the fuse heads are consistent with the cooperating elements and are for Type D0 AC 400V, and for DC 250V. For D-type heads, the maximum voltage is 750 V. The maximum work intensity of the safety devices, including fuse heads, is 100A.

Self-service and replacement of a blown fuse is possible in the protection of electrical systems using fuse heads. Safety systems and quality standards are provided by reputable suppliers, including ETI , a producer of comprehensive solutions for electrical installations.