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US 9,425,003 B2Granted
Electric current switching apparatus
AssigneeABB AB
InventorsHarri Mattlar, Mikko Välivainio
Life of this patent
Estimating the term…
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.
Claims12
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.