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Surge fuses for protection of Type 1 AC SPD

Part Number: 39466
  • Specific Fuses (SPD Fusing Disconnectors) for short circuit protection of Type 1 AC surge protectors
  • Surge current withstand: 25 kA @ 10/350µs
  • Very compact
  • Fusion signaling feature
  • Remote signaling though fuse holder

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 msut be installed in the SPD branch. The SFD are equipped with fusing indicator to be used inside holder with remote signalling feature. The SFD disconectors must be used with specific fuse holders which provide : - relevant surge current capability - remote signaling feature - switching (useful for maintenance purpose)

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Max. AC operating voltage Uc 500 Vac
Nominal discharge current In 50 kA
Max. discharge current Imax 80 kA
Impulse current by pole Iimp 12.5 kA
Equivalent rated AC current 125 A
Breaking capacity 100 000 A
Fusing indicator Yes
Remote fusing indication Through dedicated fuse holder
Residual voltage Up < 0.7 kV @ 12.5 kA
Format Cylindrical
Mounting On cylindrical fuse holder
Operating temperature Tu -40/+85°C
Protection rating IP20
Number of units per package 10 units per packaging
Dimensions 14x51 mm
Associate Fuse holder BSFD14-10S & SFD1-13 1 pole BSFD14-11S* & SFD1-13 single phase (L+N) BSFD14-20S & SFD1-13 2-phase BSFD14-30S & SFD1-13 3-phase BSFD14-31S* & SFD1-13 3-phase+N BSFD14-40S & SFD1-13 4-phase *The Neutral position is equipped with a non-fusing element The fuse holders are all equipped with a remote signaling
Standards compliance EN 61643-11 /IEC 61643-11 /EN 60269-1/EN 60269-2/IEC 60269-1/IEC 60269-2