DEVICE FOR MAKING HIGH-CURRENT ELECTRIC CIRCUITS Russian patent published in 2016 - IPC H01H39/00 F42C11/00 

FIELD: electricity.

SUBSTANCE: device for closing high-current electric circuits includes hollow cylindrical housing and installed in it fixed, installed with a gap relative to each other, contact elements, charge of pyrotechnic devices (PTC) and means for its ignition, generating a thermocompression pulse. Device has fixed contact elements, which are aligned and have contact platforms made in form of compacted parts from metal rubber based on copper wire, characterised by porosity of 40-60 vol%. PTC made of a mechanical mixture of powdered copper, titanium and copper oxide, with total content of copper of not less than 70 wt%, is installed in a zone adjoining to contact platforms of contact elements and contacts with electric igniter as a means of ignition of pyrotechnical charge, combustion products of which represent molten copper and titanium, non-contact elements are connected to electrodes of terminals of external electrical circuit, first of which is made in form of a rod as a whole with round flat head and second of which is a hollow cylindrical body with two chambers of larger and smaller diameters, communicated via through hole in base of chamber with smaller diameter. In chamber cavity of smaller diameter there is an electric igniter, from outside to be activated from a source of electric pulse. PTC is pressed in chamber cavity of larger diameter.

EFFECT: simple device for closing high-current electric circuits with high reliability during its operation.

1 cl, 1 dwg, 1 tbl