Specialty FUSE 250Amp Continuous Current Rating, 660VAC Nominal Maximum Voltage Rating, Size 1* Structural Square Body Shell (Standard 1*/80 Slotted Flush-End Tag Dimensions), Class aR High-Speed Semiconductor Power Fuse. Utilizing a pure silver inner melting element grid embedded inside a high-purity silica sand grain quenching matrix, it is engineered explicitly to provide ultra-fast, microsecond let-through energy clearing to guard sensitive solid-state electronics, silicon controlled rectifiers (SCRs), variable frequency drives (VFDs), and heavy thyristor modules from devastating overcurrent line spikes [LPJ-30SP]. It incorporates an unyielding, high-dielectric square ceramic insulation shroud body equipped with flush-end slotted center-bolted tag terminals designed to mount directly onto shared multi-conductor distribution trunks with absolute physical parameter stability, completely shunting localized thermal degradation hazards under relentless machinery floor vibration. Manufactured by Bussmann (Eaton) High Speed Series. Exact part index: 170L4812 (also cataloged across international tracking registers under standard engineering layout profile: 170L4812 / Typower Silcu). Industry Exact Equals: Mersen 6,9URD30D08A0250 / SIBA 2061031.250 / Ferraz Shawmut 6.9URD30D08A0250
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