The ABB HTSS372080 is a back-up current-limiting fuse for distribution transformers, rated 38.0 kV and 80 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: 38.0 kV
- Current rating: 80 A
- Rated maximum voltage: 38.0 kV
- Rated maximum interrupting current: 50.0 kA
- Minimum interrupting current: 490 A
- Minimum melting I²t: 5600 A²s
- Maximum total I²t: 23500 A²s
- Overall diameter: 83.5-85 mm
- Overall length: 490-492.8 mm
- Body length: 464-464.8 mm
- Weight: 5.4-5.5 kg
The same rating without the CN suffix is manufactured outside China.
Technical Specifications
- Part Number
- HTSS372080
- Manufacturer Part Number
- HTSS372080
- Series
- HTSS Series
- Fuse Type
- Backup current-limiting fuse
- Current Rating
- 80 A
- Voltage Rating
- 38.0 kV
- AC / DC
- AC
- Breaking Capacity
- 50.0 kA
- Pre-arcing I²t
- 5600
- Total I²t
- 23500
- Package / Dimensions
- 83.5-85 mm dia. x 490-492.8 mm overall length (464-464.8 mm body)
- Application
- Transformer
- Weight
- 5.4-5.5 kg
- Approvals
- IEEE C37.40
- Certifications
- IEEE C37.40
- Rated maximum voltage
- 38.0 kV; Rated maximum interrupting current: 50.0 kA; Minimum interrupting current: 490 A; Manufactured outside China