Electric current knife switch
AssigneeABB Schweiz AG
InventorsErik Jonsson Seither, Nina Sasaki Støa-Aanensen
Life of this patent
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AssigneeABB Schweiz AG
InventorsErik Jonsson Seither, Nina Sasaki Støa-Aanensen
Estimating the term…
An electric current switch comprising: a housing; a contact lever including a proximal end and a distal end and is rotatable at a pivot point at the distal end, the contact lever including a lever arcing contact area and a lever arcing contact at the proximal end; a fixed contact assembly configured to receive the contact lever in a closed position of the contact lever, the fixed contact assembly including fixed main contacts and a fixed arcing contact, the fixed contact assembly being fixed relative the housing accommodating the fixed contact; the contact lever is configured to rotate about the pivot point between the closed position and an open position, the electric current switch further including a nozzle fixedly arranged to surround the position of the fixed arcing contact, the nozzle including at least one outlet to provide a flow of cooling gas towards the fixed arcing contact, the flow of cooling gas being in the proximal direction of the contact lever as when the contact lever in the closed position.
An electric current switch comprising:
An electric current switch comprising:
Dependencies are inferred from the claim text.