High-speed fuse protects power semiconductor devices

Due to the continuing miniaturisation of electronic components with an increase in power, power semiconductors are more sensitive to overcurrent conditions and voltage pulses. Littelfuse‘s square case PSR series offers high-speed protection for precisely this application. The PSR series is available now at Rutronik UK.

The series is especially created to protect power semiconductor devices covering diodes, triacs, IGBTs, SCRs, MOSFETs and other semiconductor elements employed for power converter and processing accessories. The notably fast circuit protection of this product line hence satisfies the demands of modern power converters.

These components are employed in variable frequency drives, inverters, rectifiers and soft starters, UPS, which are seen, for example, in the pulp and paper industry, cranes and heavy-duty accessories, the manufacturing industry or wastewater treatment plants. Battery protection applications in energy storage systems, charging stations for e-vehicles or heating and power supply systems also profit from high-speed fusing.

These devices offer excellent DC class performance and extremely current limiting, and excellent cycling capability. They are direct bus-bar mount design created for low watt loss. The devices provide global certification (cURus, CCC, IEC) and class-aR performance according to IEC60269-4. Also offered is an optional visual microswitch indication for blown fuses.