SIBA fuse-links in railway applications

The electrical power supply for rail vehicles places particular demands on protection and fuse-link systems. Traditionally established traction power systems using both direct and alternating current, as well as the 16.7Hz frequency commonly used in Central Europe, have a significant influence on the tripping and breaking behavior of fuse-links. In particular, the delayed zero-crossing of the voltage requires fuse-link designs with appropriate rated and test voltages. 

International standards and regulations such as UIC 550 and IEC 60077-5 specify binding requirements in this regard. In traction and rolling stock applications, high inrush currents, cyclic load profiles as well as vibration and shock loads must also be taken into account. 

The proper selection of fuse-links plays a key role in ensuring the operational safety of electrical equipment in locomotives, multiple units and passenger coaches, and is a central issue in railway engineering. SIBA GmbH based in Lünen, Germany offers a wide range of suitable fuse-links.