Semiconductors are electronic components extremely sensible to overloads and short-circuit, therefore they cannot be protected with general purpose fuse-links. For this reason there are ultra rapid fuse-links for this specific purpose, with very fast melting characteristics, low let-through energy values (I2t) and adequate selective coordination with protection devices upstream.
Typical application comprise protection of semiconductors (diodes, thyristors, triacs, etc) used in power rectifiers, UPS, converters, motor drives (AC and DC), soft starters, solid state relays, photovoltaic inverters, welding inverters and any application where it is necessary to protect semiconductor devices.
RAPIDPLUS® range comprise three sizes with dimensions 10x38, 14x51 and 22x58, with rated currents between 4A and 100A and a rated voltage of 690 V AC. Sizes 14x51 and 22x58 are available also with striker, for use in fuse bases with micro-switch. There are two operating classes aR and gR.
Made of ceramic tube with high withstand to internal pressure and thermal chock, that allow a high breaking capacity in a reduced physical space, as well as a good thermal conductivity. End caps are made of silver plated copper for optimal contact with fuse base. Melting elements are made of pure silver and have a special design to obtain low I2t values and reduced arc voltages, as well as good aging resistance. These fuse-links meet IEC/EN60269-1 and IEC/EN60269-4 standards and RoHS directive 2002/95/EC.