ABB HTSS242150 Backup Current-Limiting Fuse, 17.2 kV, 150 A

The ABB HTSS242150 is a back-up current-limiting fuse for distribution transformers, rated 17.2 kV and 150 A. It is applied in series with a properly sized under-oil expulsion fuse (bay-o-net, load-sensing link or weak link): the expulsion fuse clears low-magnitude faults while the current-limiting fuse interrupts high fault currents and limits the let-through energy below the withstand capability of the transformer tank.

• Voltage rating: 17.2 kV
• Current rating: 150 A
• Rated maximum voltage: 17.2 kV
• Rated maximum interrupting current: 44.0 kA
• Minimum interrupting current: 700 A
• Minimum melting I²t: 34800 A²s
• Maximum total I²t: 137000 A²s
• Overall diameter: 55.9 mm
• Overall length: 421.6 mm
• Body length: 393.7 mm
• Weight: 2.15 kg

The same rating without the CN suffix is manufactured outside China.