Mounting arrangement for circuit breaker current sensing transformers
AssigneeGeneral Electric Company
InventorGraham A. Scott
Life of this patent
Estimating the term…
Abstract
Miniaturized current sensing transformers are electrically and mechanically attached to the printed wiring board carrying the electronic trip unit circuit within molded case circuit breakers. Electrical contacts extending from the current sensing transformers project through openings in the wiring board to springingly engage metal posts extending from the printed wiring board surface. Notched posts mounted on the current sensing transformers, co-extensive with the contacts, snappingly engage the sides of the printed wiring board for good mechanical support and to maintain alignment between the current transformers on the printed wiring board.
Claims9
A current sensing transformer assembly for molded case circuit breakers comprising:
- a transformer bobbin comprising a front plate and a back plate supporting a transformer core;
- a transformer winding around said transformer core and arranged between said front plate and said back plate;
- a pair of notched support posts extending from said back plate;
- an apertured printed wiring board supported on said notched posts;
- and
- a pair of spring contacts electrically connected with said transformer winding and extending from said back plate through said apertured printed wiring board into contact with a corresponding pair of pins extending from said printed wiring board and electrically connected with said printed wiring board for providing electrical connection between said transformer winding and said printed wiring board.
Dependencies are inferred from the claim text.