BUSSMANN 170M6700 Fuse

BUSSMANN 170M6700 is a high-speed fuse-link from Bussmann (Eaton) in a square-body, size-3 package designed for high-current protection in power electronics and distribution systems. It is rated for 1250 A and 1000 V AC, with a 100 kA interrupt rating at 1000 V, making it suitable for fast-clearing protection of large power semiconductors and drives. The fuse uses copper end connections (CU) and center-bolted tags, identified as a 3FU/115 AR CU style fuse, and its dimensions are 76 x 92 x 159 mm. It carries listings for IEC and UL, and it belongs to the aR utilization category for semiconductor protection. Typical applications include protection of power supplies, motor drives, switchgear in industrial facilities, and large-panel electrical assemblies where high-current, high-voltage protection is required. Catalog references from Eaton/Bussmann and distributor pages consistently present 170M6700 under catalog numbers matching 1250 A and 1000 V, underscoring its role in protecting critical power circuits with an extremely high interrupt capacity.