Circuit breaker
AssigneeAirpax Corporation, LLC
InventorsJonathan Edward Millburn, Noel Keith Ware, Mervyn Bradshaw Johnston
Life of this patent
Estimating the term…
Abstract
A circuit breaker having a manual control, an over-center contact mechanism, and a magnetic current sensing coil, wherein said an over-center contact mechanism is disposed between said external manual control and said sensing coil. For example, a collapsible toggle linkage selectively applies a force along an axis, which generally intersects the coil. The circuit breaker has a housing for a contact mechanism having a contact bar rotational axis. The magnetic sensing coil of the circuit breaker is not disposed between the contact mechanism and a side wall of the housing.
Claims30
A circuit breaker comprising a manually operable lever, a mechanical trip mechanism comprising an over-center toggle mechanism a current sensing coil, and a contact arm, said contact arm being settable by said manually operable lever and resetable by said mechanical trip mechanism based on a current passing through said current sensing coil, said circuit breaker further comprising an elongated housing, wherein said manually operable lever, said mechanical trip mechanism, and said current sensing coil are disposed at substantially different depths along said elongated housing with respect to said contact arm, wherein said housing has a maximum height of a surface from which said manually operable lever protrudes, of less than about 1.75 inches, and said contact arm is adapted to break a current of at least 1000A and 65 VDC nominal.
A circuit breaker comprising a manually operable lever, a mechanical trip mechanism comprising an over-center toggle mechanism, a current sensing coil, and a contact arm, said contact arm being settable by said manually operable lever and resetable by said mechanical trip mechanism based on a current passing through said current sensing coil, said circuit breaker further comprising an elongated housing, wherein said mechanical trip mechanism is disposed between said manually operable lever and said current sensing coil, wherein said housing as a maximum height of a surface from which said manually operable lever protrudes, of less than about 1.75 inches, and said contact arm is adapted to break a current of at least 1000A and 65 VDC nominal.
A circuit breaker comprising a manually operable lever, a mechanical trip mechanism comprising a collapsible toggle linkage for selectively applying a force along an axis, a current sensing coil, and a contact arm, said contact arm being settable by said manually operable lever and resetable by said collapsible toggle linkage based on a current passing through said current sensing coil, wherein said axis generally intersects said current sensing coil, wherein said housing has a maximum height of a surface from which said manually operable lever protrudes, of less than about 1.75 inches, and said contact arm is adapted to break a current of at least 1000A and 65 VDC nominal.
A circuit breaker comprising a manually operable lever, a mechanical trip mechanism comprising an over-center trip mechanism, a current sensing coil, and a contact arm, said contact arm being settable by said manually operable lever and reactable by said mechanical trip mechanism based on a current passing through said current sensing coil, wherein said over-center contact mechanism is disposed between said manually operable lever and said current sensing coil, wherein said housing has a maximum height of a surface from which said manually operable lever protrudes, of less than about 1.75 inches, and said contact an is adapted to break a current of at least 1000A and 65 VOC nominal.
Dependencies are inferred from the claim text.