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S&C Electric SMU-20 Fuse Units

Mfg #: 612065
BSE #: 163751

Used in distribution substations and switchgear for protection of transformers, lines, cables, and capacitors where there are higher loads, higher fault currents, and higher voltages that are beyond capabilities of standard expulsion fuses.

  • Available in wide range of ampere ratings and five different speeds: K-Fast, Standard, Slow, Very Slow, and DR (DR is only available for SMU-20 fuse refill units)
  • Fault-interrupting ratings range from 8,450 amperes at 34.5 kV to 14,000 amperes at 14.4 kV depending on fuse holder type
  • Precise and permanently accurate time-current characteristics
  • Precision-engineered non-damageable silver or nickel-chrome fusible elements
  • Used on systems rated 4.8 kV through 34.5 kV
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Brand S&C Electric  
Fuse Rating E  
Fuse Holder SMD-20  
Time Current Curve TCC 153-2  
Fuse Speed Standard  
Voltage 14.4 kV  
Amperage 65 A  

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