The ESKA Feinsicherung 5x20 FST 5A is a glass-tube fuse designed for overcurrent protection in electronic and electrical circuits. With a 5 A nominal rating and a fast-blow (FST) characteristic, it interrupts the circuit quickly when current exceeds the rated threshold, protecting sensitive components from damage.
Fast-blow (FST) characteristic ensures rapid disconnection during overcurrent events
Glass tube construction allows visual inspection of the fuse element
5 A nominal current rating suitable for precision circuits
Pack of 10 pieces for multiple installations or replacements
Das zeichnet die ESKA Feinsicherung aus
The 5x20 mm glass-tube format is a widely used standard in electronics and electrical engineering, offering compact dimensions and reliable performance. The clear tube body lets users visually confirm a blown fuse without removing it from the holder, simplifying troubleshooting and maintenance.
Ideal für...
Designed for engineers, technicians, and maintenance personnel working with electronic equipment, control circuits, and low-voltage electrical installations. Suitable for prototyping, panel building, and the repair of consumer and industrial electronic devices where precise overcurrent protection is required.
Anwendung von ESKA Feinsicherung 5x20 FST 5A
Insert the fuse into a compatible 5x20 mm fuse holder in the circuit
Ensure the circuit is de-energized before installation or replacement
Replace the fuse only with an identical rating (5 A, FST, 5x20 mm glass tube)
After a blown fuse, inspect the circuit for the root cause of overcurrent before inserting a new fuse
ESKA is a brand of Elektromaterial, a Swiss-based electrical wholesaler supplying fuses, protective devices, and components for building and electrical engineering applications.
It provides overcurrent protection in electronic and electrical circuits, rapidly interrupting the circuit when current exceeds the 5 A rated threshold to prevent damage to downstream components.
FST stands for Fast-Blow (Träge/Flink). Unlike slow-blow (T) fuses that tolerate brief current surges, the FST characteristic disconnects the circuit quickly when the rated current is exceeded, making it suitable for sensitive electronic components.
Glass tube, 5x20 mm format; nominal current 5 A; fast-blow (FST) characteristic; pack of 10 pieces; rated for 250 V AC (standard for this fuse size).
Always de-energize the circuit before inserting or replacing the fuse. Use a compatible 5x20 mm fuse holder. Replace only with an identical rating (5 A, FST, glass tube). Inspect the circuit for the cause of overcurrent before installing a new fuse.
The 24-month manufacturer warranty covers material and manufacturing defects under normal operating conditions. It does not cover damage caused by overcurrent events, incorrect rating selection, or improper installation.
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