US 11,909,202 B2
Overcurrent protection device for surge arresters
Jaromir Suchy, Usti nad Labem (CZ); and Martin Cadek, Horazdovice (CZ)
Assigned to Saltek s.r.o., Usti nad Labem (CZ)
Filed by Saltek s.r.o., Usti nad Labem (CZ)
Filed on May 31, 2022, as Appl. No. 17/829,262.
Claims priority of application No. CZ2021-268 (CZ), filed on Jun. 1, 2021.
Prior Publication US 2022/0385060 A1, Dec. 1, 2022
Int. Cl. H02H 9/02 (2006.01); H01H 85/20 (2006.01)
CPC H02H 9/02 (2013.01) [H01H 85/20 (2013.01); H01H 2085/2085 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An overcurrent protection device, comprising:
a housing made of electrically insulating material;
a fuse provided within the housing, the fuse having at least one main fuse wire located in a cavity of the fuse;
at least one signal fuse wire connected in parallel to the main fuse wire, wherein
a first end of the main fuse wire is electrically conductively connected to at least one connecting pin, the connecting pin being led out of the housing and shaped for connection to a protected device; and
a second end of the main fuse wire is electrically conductively connected to at least one terminal located in at least a second cavity formed in the housing;
an inspection opening provided on the housing;
a slider disposed under the opening, the slider having a marked display area and being slidably arranged along an inner surface of the housing; and
a lever made of electrically conductive material placed in the housing wherein
a first end of the lever is electrically conductively anchored to a lead of the terminal, rotatably in a direction perpendicular to the longitudinal axis of the fuse and simultaneously electrically conductively connected to the signal fuse wire; and
a second end of the lever forms a stop for the slider.