Square fuse PSR Series

super fast-actingClass aRDC

The PSR Flush End series is a POWR-SPEED® high-speed, square body fuse specifically designed for the protection of power semiconductor devices such as diodes, triacs, IGBTs, SCRs, MOSFETs, and other solid-state devices that are typically used in power conversion and power conditioning equipment. Variable frequency drives, inverters, UPS, rectifiers, and soft-starters are examples of equipment designed with sensitive power semiconductor devices that cannot withstand any line surge or overcurrent conditions and require high-speed protection. Littelfuse POWR-SPEED® PSR series products offer optimized circuit protection at the extremely fast speed required to protect modern-day power conversion devices. These products are commonly found in pulp and paper industries, cranes and heavy-lifting equipment, processing industries, wastewater treatment plants, and various large factories and MRO facilities. Features • Extremely current-limiting • POWR-SPEED® technology • Global certification cURus, CCC*, IEC • Low watt-loss design • Best-in-class dc performance • Superior cycling capability • Visual and optional microswitch fuse blown indication • Compliance with US and Canadian requirements • Fast-acting Class aR performance • Direct bus-bar mount design • * Refer to CCC section of electrical characteristics table