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US 2015/0027984 A1Published application
Electric current switching apparatus
AssigneeABB AB
InventorsHarri MATTLAR, Mikko VÄLIVAINIO
Life of this patent
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Abstract
An arc quenching plate for an electric switch includes a first mounting portion and a second mounting portion for mounting the quenching plate to respective recesses of the switch. The first mounting portion and the second mounting portion have a different form when compared to each other.
Claims18
An arc quenching plate for an electric switch, the arc quenching plate comprising:
- a base portion;
- a first side portion;
- and
- a second side portion, the first and second side portions extending from the base portion and being substantially parallel to each other, the first and second side portions including a first mounting portion and a second mounting portion, respectively, for mounting of the quenching plate to respective recesses of the switch,
- wherein a propagation channel for the arc is formed between the side portions of the plate, the propagation channel being asymmetric, and
- wherein the first mounting portion and the second mounting portion have a different form when compared to each other.
3 more elements
An electric switch module, comprising:
- a first switch module housing and a second switch module housing to be assembled together, the first and second switch module housings respectively comprising recesses for receiving quenching plates;
- quenching plates arranged between the first and second switch module housings when assembled together, the quenching plates forming a propagation channel for an electric arc,
- wherein the propagation channel formed by the quenching plates is non-uniform,
- wherein a recess for receiving one of the quenching plates in the first switch module housing has a different form than a recess in the second switch module housing for receiving the same quenching plate.
1 more element
Dependencies are inferred from the claim text.