IMPROVEMENT IN TIME DELAY FUSE

A time delay fuse (10) and various subassembly for that time delay fuse. The fuse includes a housing (12) made of an insulating material. The housing encloses a short-circuit fusible element (30), preferably a copper or copper alloy strip having a plurality of slots (34). The housing also encloses o...

Full description

Saved in:
Bibliographic Details
Main Authors SWENSEN, ROBERT G, KOWALIK, JOSEPH W
Format Patent
LanguageEnglish
French
Published 26.01.1999
Edition6
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC SWITCHES
ELECTRICITY
EMERGENCY PROTECTIVE DEVICES
RELAYS
SELECTORS
Online AccessGet full text

Cover

More Information
Summary:A time delay fuse (10) and various subassembly for that time delay fuse. The fuse includes a housing (12) made of an insulating material. The housing encloses a short-circuit fusible element (30), preferably a copper or copper alloy strip having a plurality of slots (34). The housing also encloses one or more rigid meltable fusible elements (46, 48), preferably a plurality of solder bars. A body (62) of resilient, compressible insulating material has at least one passageway through which each of the time delay fusible elements extends. When the rigid meltable fusible elements melt, the circuit through the fuse opens. In addition, the passageway which surrounded the rigid meltable fusible elements collapses upon its melting. This provides protection against "arc-back".
Bibliography:Application Number: CA19942155301