Description
Used S&C SM-5 34.5kV 250E Power Fuse – Model 134400R4 | TCC 153-4
This is a used S&C SM-5 Power Fuse Unit, model 134400R4, rated for 34.5kV systems with a 250E ampere rating. Featuring Time-Current Characteristic (TCC) curve 153-4, this fuse is designed for precise coordination and dependable overcurrent protection in medium-voltage distribution networks.
Specifications:
Manufacturer: S&C Electric Company
Model: 134400R4
Type: SM-5 Power Fuse
Voltage Rating: 34.5kV
Current Rating: 250E
TCC Curve: 153-4
Condition: Used – fully functional, visually inspected for integrity
Application: Medium-voltage overcurrent protection for transformers, feeders, and capacitor banks
Key Features:
Engineered for use with S&C SM-5 fuse mountings
High interrupting capacity and time-delay characteristics
Ensures reliable fault protection and coordination with other protective devices
Ideal for utility and industrial power systems
This surplus fuse is in excellent unused condition, making it a cost-effective solution for maintenance, retrofitting, or new installations requiring high-performance medium-voltage protection.




