French Standard Semiconductor Fuses, IEC 269.1 and 4
DENCO French Standard semiconductor fuses are made in accordance with IEC 269.1 and 4. The catalog lists 690V/800V blade fuses from 40A to 1600A in sizes NH1 to NH3, 690V/800V fuses from 1000A to 2000A in sizes NH2x2 to 2x3, and 1000V/1250V fuses from 1250A to 2000A in size NH2x3.
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The 690V/800V French Standard fuses on page 107 are current limiting with a high interrupting rating, low watts loss and a silver element. They are offered with indicator pin type "P" or indicator type "F" for a microswitch base, under catalog numbers D3878, D4878, D5878 and D6878, and D3928, D4928, D5928 and D6928. Page 116 carries the electrical characteristics for the 690V/800V series.
The 1000V/1250V rating appears only in the French standard listing. Page 127 gives its pre-arcing time-current curve against RMS current, the electrical characteristics and an I²t correction factor.
Specifications
| Parameter | Value |
|---|---|
| 690V/800V blade | 40A to 1600A, NH1 to NH3 |
| 690V/800V | 1000A to 2000A, NH2x2 to 2x3 |
| 1000V/1250V | 1250A to 2000A, NH2x3 |
| Interrupting rating | 200kA AC, 100kA DC |
| Indicators | Pin type P, or type F for microswitch base |
Construction and options
- Current limiting
- High interrupting rating
- Low watts loss
- Silver element
- Indicator pin type P
- Indicator type F for microswitch base
Catalog numbers in this series
| Catalog no. | Availability | Last reviewed |
|---|---|---|
| D3878 | Active | 2026-08-27 |
| D4878 | Active | 2026-08-27 |
| D5878 | Active | 2026-08-27 |
| D6878 | Active | 2026-08-27 |
| D3928 | Active | 2026-08-27 |
| D4928 | Active | 2026-08-27 |
| D5928 | Active | 2026-08-27 |
| D6928 | Active | 2026-08-27 |
Standards and equivalents
- French Standard (IEC 269.1)
- French Standard in accordance with IEC 269.1 and 1/4
- French Standard in accordance with IEC 269.1/4
Wording is the catalog’s own. “In accordance with” a standard is not the same as certified or listed to it.
Curves and drawings
The catalog prints the following for this series: time-current curve, 1000v/1250v, i²t correction factor, electrical characteristics tables. This series is on pp.98, 107, 116, 127 of the January 2025 DENCO catalog. Access the catalog or ask for the drawing or curve you need.
Technical review
Specifications on this page are quoted from DENCO’s product catalog. Confirm any rating against DENCO engineering before specifying.
Related
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- Semiconductor fuse application notes
- Form 101 cylindrical semiconductor fuses
- DIN 43620 knife-blade semiconductor fuses (aR/gR)
- DIN 43653 German-standard semiconductor fuses
- American Standard (BS 88) NH semiconductor fuses
- Press-pack semiconductor fuses
- Ferrule semiconductor protection fuses
- All fuse product families
- Cross-reference and discontinued replacement