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

Part Number: 64052
  • Specific Fuses (SPD Fusing Disconnectors) for short circuit protection of AC SPD
  • For Type 1 SPD
  • Surge current withstand: 12.5 kA (@10/350µs)
  • Very compact
  • Fuses included
  • Remote signaling and status signaling

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 TNC-IT
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 Equivalent 125 A (gL/gG)
Breaking capacity 100 000 A
Residual voltage Up < 0.4 kV @ 12.5 kA
Fuse configuration Cylindrical 14x51 mm
Mounting Symmetrical rail 35 mm (EN 60715)
Accessory(s) provided Fuse(s) included
Operating temperature Tu -40/+85°C
Protection rating IP20
Spare module(s) SFD1-13
Remote signaling of disconnection Yes
Dimensions See diagram
Standards compliance EN 61643-11 /IEC 61643-11 /EN 60269-1/EN 60269-2/IEC 60269-1/IEC 60269-2