The ABB HTSS132050 is a back-up current-limiting fuse for distribution transformers, rated 8.3 kV and 50 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: 8.3 kV
- Current rating: 50 A
- Rated maximum voltage: 8.3 kV
- Rated maximum interrupting current: 50.0 kA
- Minimum interrupting current: 400 A
- Minimum melting I²t: 3500 A²s
- Maximum total I²t: 13200 A²s
- Overall diameter: 38.1 mm
- Overall length: 162.6 mm
- Body length: 132.1 mm
- Weight: 0.90 kg
The same rating without the CN suffix is manufactured outside China.
Technical Specifications
- Part Number
- HTSS132050
- Manufacturer Part Number
- HTSS132050
- Series
- HTSS Series
- Fuse Type
- Backup current-limiting fuse
- Current Rating
- 50 A
- Voltage Rating
- 8.3 kV
- AC / DC
- AC
- Breaking Capacity
- 50.0 kA
- Pre-arcing I²t
- 3500
- Total I²t
- 13200
- Package / Dimensions
- 38.1 mm dia. x 162.6 mm overall length (132.1 mm body)
- Application
- Transformer
- Weight
- 0.90 kg
- Approvals
- IEEE C37.40
- Certifications
- IEEE C37.40
- Rated maximum voltage
- 8.3 kV; Rated maximum interrupting current: 50.0 kA; Minimum interrupting current: 400 A; Manufactured outside China