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Press-Pack Semiconductor Fuses, IEC 269.1 and 4

DENCO press-pack semiconductor fuses are made in accordance with IEC 269.1 and 4. The catalog lists 690V/800V and 1000V/1300V versions from 40A to 1600A in sizes NH1 to NH3, plus a 690V/800V DIN 43653 press-pack version from 10A to 400A in size NH00. They are current limiting with low watts loss and a silver element.

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The 690V/800V press-pack fuses on page 115 come with a visual indicator, indicator type "P" for a microswitch base, or indicator type "F" for a microswitch base. Catalog numbers are D4028, D5028, D6028 and D7028, and D3978, D4978, D5978 and D6978.

The 1000V/1300V press-pack fuses on page 126 offer indicator type "F" or type "M" for a microswitch base. Catalog numbers are D3958, D4008, D6158, D6958, D7108 and D7064, and D4958, D5008, D6008 and D6064. The type M indicator appears only on this page.

Specifications

Press-pack semiconductor fuses: ratings as printed in the DENCO catalog
ParameterValue
690V/800V40A to 1600A, NH1 to NH3
1000V/1300V40A to 1600A, NH1 to NH3
690V/800V DIN 43653 press-pack10A to 400A, NH00
Interrupting rating200kA AC, 100kA DC
Indicators, 690V/800VVisual, type P or type F for microswitch base
Indicators, 1000V/1300VType F or type M for microswitch base

Construction and options

  • Current limiting
  • High interrupting rating
  • Low watts loss
  • Silver element
  • Microswitch indicator types P, F and M

Catalog numbers in this series

Catalog numbers — January 2025 catalog pp.98, 115, 126 (18 total)
Catalog no.AvailabilityLast reviewed
D4028Active2026-08-27
D5028Active2026-08-27
D6028Active2026-08-27
D7028Active2026-08-27
D3978Active2026-08-27
D4978Active2026-08-27
D5978Active2026-08-27
D6978Active2026-08-27
D3958Active2026-08-27
D4008Active2026-08-27
D6158Active2026-08-27
D6958Active2026-08-27
D7108Active2026-08-27
D7064Active2026-08-27
D4958Active2026-08-27
D5008Active2026-08-27
D6008Active2026-08-27
D6064Active2026-08-27

Standards and equivalents

  • Press-pack in accordance with IEC 269.1 and 4
  • Press-pack in accordance with IEC 269.1 and 4 (1000V/1300V)
  • 690V/800V NH00 press-pack version to DIN 43653

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: electrical characteristics tables. This series is on pp.98, 115, 126 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.

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