Surge fuses for protection of Type 1 AC SPD
Part Number: 39489
SFD1-25
- Specific Fuses (SPD Fusing Disconnectors) for short circuit protection of Type 1 AC surge protectors
- Surge current withstand: 25 kA @ 10/350µs
- 10 units per packaging
- 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)
Datasheet|
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 |
|
|
Fusing indicator
|
Yes |
|
|
Remote fusing indication
|
Through dedicated fuse holder |
|
|
Residual voltage
|
Up | < 0.5 kV @ 25 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
|
22x58 mm |
|
|
Associate Fuse holder
|
BSFD22-10S & SFD1-25 1 pole BSFD22-11S* & SFD1-25 single phase (L+N) BSFD22-20S & SFD1-25 2-phase BSFD22-30S & SFD1-25 3-phase BSFD22-31S* & SFD1-25 3-phase+N BSFD22-40S & SFD1-25 4-phase *The Neutral position is equipped with a non-fusing element The fuse holders are all equipped with a remote signaling |
|
|
Weight
|
25g |
|
Standards compliance
|
EN 61643-11 /IEC 61643-11 /EN 60269-1/EN 60269-2/IEC 60269-1/IEC 60269-2 |
