Fuses+holders for protection of 3-phase+N Type 1 AC SPD

SFD1-25S-40
Part Number 64057
SFD1-25S-40
  • Specific Fuses (SPD Fusing Disconnectors) for short circuit protection of AC SPD
  • For Type 1 SPD
  • Surge current withstand: 25 kA (@10/350µs)
  • Very compact
  • Included fuses
  • Remote signaling and status signaling
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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.
AC system
 IT-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
Equivalent rated AC current
 250 A
Breaking capacity
 100 000 A
Residual voltage
 Up < 0.5 kV @ 25 kA
Fuse configuration
Cylindrical 22x58 mm
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
Weight
 0.88 kg
Standards compliance
 EN 61643-11 /IEC 61643-11 /EN 60269-1/EN 60269-2/IEC 60269-1/IEC 60269-2