The ABB 1SFA899005R1366 is a PSFU-80 semiconductor fuse, designed to protect power semiconductors — diodes, thyristors, IGBTs — from overcurrent faults in drives, power supplies, and conversion stages. Its job is to clear a fault fast enough that the semiconductor junction doesn't melt before the fuse opens. That's a different speed requirement than a general-purpose branch circuit fuse; semiconductor fuses are built for the high I²t let-through a silicon device can survive.
Compliance and Documentation Trail
Classified under WEEE Category 5 (small equipment, no external dimension over 50 cm) and flagged B2B, so end-of-life disposal obligations fall on the business user, not the producer. The supporting documents are on record: instructions and manual reference 1SFC388004-89, and the data sheet / technical information is 1SFC132005M0201 — both are the official ABB publications for this fuse.