The ABB HTSS142040 is a back-up current-limiting fuse for distribution transformers, rated 17.2 kV and 40 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: 40 A
- Rated maximum voltage: 17.2 kV
- Rated maximum interrupting current: 44.0 kA
- Minimum interrupting current: 340 A
- Minimum melting I²t: 2550 A²s
- Maximum total I²t: 9000 A²s
- Overall diameter: 38.1 mm
- Overall length: 248.9 mm
- Body length: 218.4 mm
- Weight: 0.54 kg
The same rating without the CN suffix is manufactured outside China.
Technical Specifications
- Part Number
- HTSS142040
- Manufacturer Part Number
- HTSS142040
- Series
- HTSS Series
- Fuse Type
- Backup current-limiting fuse
- Current Rating
- 40 A
- Voltage Rating
- 17.2 kV
- AC / DC
- AC
- Breaking Capacity
- 44.0 kA
- Pre-arcing I²t
- 2550
- Total I²t
- 9000
- Package / Dimensions
- 38.1 mm dia. x 248.9 mm overall length (218.4 mm body)
- Application
- Transformer
- Weight
- 0.54 kg
- Approvals
- IEEE C37.40
- Certifications
- IEEE C37.40
- Rated maximum voltage
- 17.2 kV; Rated maximum interrupting current: 44.0 kA; Minimum interrupting current: 340 A; Manufactured outside China