Protective switching device for difference-current and undervoltage tripping
AssigneeHeinrich Kopp AG
InventorFranz Herbert
Life of this patent
Estimating the term…
Abstract
A protective switching device with difference-current, undervoltage and free tripping in a confined space, for example within a conventional mains angle plug or the like, the switch-on and plunger-type magnet mechanics and the electronic monitoring arrangement are divided per se in constructional groups capable of being assembled efficiently.
Claims10
A protective switching device disposed within a housing having a stop adapted for current interruption responsive to difference-current and/or undervoltage, the device comprising:
- a spring-loaded tripping element;
- means for controlling said spring-loaded tripping element;
- contact means for selectively allowing current flow through the device;
- a pivotal coupling element having an abutment surface, said pivotal coupling element and said contact means being in spring-loaded engagement with each other;
- and
- a control button for pivoting said coupling element against said tripping element to (i) set said tripping element and (ii) place said abutment surface against said contact means to allow current flow;
- whereby at least one of a difference-current and an undervoltage detected by said controlling means releases said tripping element and pivots said coupling element against the housing stop, whereby said contact means slides off said abutment surface and terminates current flow.
A protective switching device disposed within a housing adapted for current interruption responsive to difference-current and/or undervoltage, the housing having a stop thereon, the device comprising:
- a spring-loaded tripping element;
- a summation transformer for controlling said spring-loaded tripping element;
- contact means for selectively allowing current flow through said device;
- an axle;
- a coupling element pivotally mounted on the axle, said coupling element being spring-loaded in a direction toward said contact means and having an abutment surface, said coupling element further including an elastic stop bow integrally molded thereon and facing the housing stop, said coupling element also including a recess shaped for accommodating said contact means;
- a control button for pivoting said coupling element against said tripping element to
- (i) set said tripping element;
- and
- (ii) place the abutment surface against said contact means to allow current flow,
- said control button having extensions and said axle being supported on the extensions;
- and
- a spring for biasing said control button away from said housing,
- whereby at least one of a difference-current and an undervoltage detected by said summation transformer releases said tripping element and pivots said coupling element against said stop and whereby said contact means slides off said abutment surface into the recess and terminates current flow.
Dependencies are inferred from the claim text.