General
Format	5x20 mm
Nominal current	2,5 A
Scope of delivery	5er-Pack

Slow-acting fuses in the 5x20 mm format provide protection in electrical installations, particularly when high inrush currents or current surges occur that subside over a longer period. These fuses are specifically designed for applications where power consumption at startup significantly exceeds the rated value, for example when starting electric motors, heating cold resistors, or commissioning devices with high starting power. The slow-acting characteristic of the fuse allows it to tolerate short-term current surges without tripping, thereby focusing the protective function specifically on sustained overloads and short circuits.

Fuses in the standard 5x20 mm format are widely used in electrical engineering and are employed in various devices and installations where precise and reliable current limitation is required. The slow-acting design differs from fast-acting fuses in that it does not trip during short-term current surges, but only responds to sustained overloads or short circuits. This makes them particularly suitable for installations with motor or inductive loads, where the inrush current is significantly higher than the operating current.

Technology explained clearly: The slow-acting characteristic of the fuse is achieved through the material composition and construction of the fuse element. During a sudden current increase, such as when starting a motor, current flows briefly through the fuse element without melting it. Only when the current exceeds the rated value for an extended period does the fuse element begin to heat up and eventually melt, interrupting the circuit. This prevents damage to the installation caused by sustained overloads.

Applications: These fuses are used in industrial installations, electrical installations, household appliances with motor components (e.g. washing machines, refrigerators), and in electronic devices that exhibit high current surges during startup. They are particularly suitable where high reliability and precise protective function are required, without the fuse tripping during normal startup procedures.

Compatibility and accessories: Fuses in the 5x20 mm format are universally applicable and fit into standard fuse holders designed for this format. They can be used in combination with appropriate holders and fuse holder combinations to ensure a safe and accessible installation. The use of a suitable holder is necessary to ensure secure mounting and reliable contact.

Operational advantages: The slow-acting design offers the advantage that it does not trip during normal startup procedures, thereby increasing operational safety. This eliminates the need to check or replace the fuse after each startup. The fuse still effectively protects against sustained overloads and short circuits, extending the service life of connected devices and preventing damage.

The fuses are available in a pack of 5, which represents an economical and practical delivery format for use in electrical installations or device manufacturing. The rated current is 2.5 A, suitable for many applications in the field of household and industrial electronics. The fuses are designed for use in electrical circuits operating at a working voltage up to 250 V AC.

The fuses are not supplied with additional components such as holders, tools, or documentation. Installation does not require special tools, but the use of an appropriate fuse holder type is necessary to ensure a safe and reliable connection.