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  • Series
    SFD1-25
  • Model
    SFD1-25S-11
  • Brand / Made in
    CITEL / FRANCE
  • Specific Fuses (SPD Fusing Disconnectors) for short circuit protection of AC SPD
  • For Type 1 SPD
  • Network: Single phase (L+N)
  • AC system: TT-TN
  • Max. AC operating voltage : 500 Vac
  • Discharge current In/ Imax 8/20µs : 80 kA/ 100 kA
  • Impulse current by pole Iimp 10/350µs  : 25 kA
  • Breaking capacity:  100 kA
  • Very compact
  • Included fuses
  • Remote signaling of disconnection: Yes
  • Standards compliance: EN 61643-11 /IEC 61643-11 /EN 60269-1/EN 60269-2/IEC 60269-1/IEC 60269-2

SFD1-25S-11

The SFD range has been especially designed to associated with Type 1 SPDs. These very specific fuses are able to conduct huge surge currents in rather small dimensions to protect Type 1 SPDs against harsh current circuit failures. In order to comply IEC 61643-11 standards, AC power SPD must be protected against short circuit failures: these specific fusing disconnectors must be installed in the SPD branch.

 

Electrical Characteristics
  • AC system:  TT-TN
  • Max. AC operating voltage Uc: 500 Vac
  • Nominal discharge current (15 x 8/20 μs impulses) In: 80 kA
  • Max. discharge current (max. withstand @ 8/20 μs by pole) Imax: 100 kA
  • Impulse current by pole (max. withstand 10/350μs by pole) Iimp: 25 kA
  • Breaking capacity: 100 000 A
  • Residual voltage Up: < 0.5 kV @ 25 kA
Mechanical Characteristics
  • Fuse configuration: Cylindrical 22x58 mm
  • Fuse holder configuration: Circuit breaker configuration for single phase (L+N)
  • Mounting: Symmetrical rail 35 mm (EN 60715)
  • Accessory(s) provided: Fuse(s) included
  • Operating temperature Tu: -40/+85°C
  • Protection rating: IP20
  • Disconnection indicator: Striker
  • Spare module(s): SFD1-25
  • Remote signaling of disconnection: Yes
  • Dimensions: See diagram
Disconnectors
  • Equivalent rated AC current 250 A
Standards
  • Standards compliance EN 61643-11 /IEC 61643-11 /EN 60269-1/EN 60269-2/IEC 60269-1/IEC 60269-2

 

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