ELECTRICAL CONTACTOR
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United States of America Patent
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N/A
Issued Date -
Jul 18, 2013
app pub date -
Apr 28, 2011
filing date -
Jul 28, 2010
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
Disclosed is an electrical contactor, comprising main contacts and secondary contacts, an armature provided for actuating the main contact bridges and secondary contact bridges, and means for restoring the armature from an intermediate position or end position to an initial position, wherein a precharging coil and a pick-up coil are provided in order to electromagnetically drive the armature. A coil yoke is arranged in such a way that the magnetic force acting on the armature due to the magnetic field produced by the precharging coil is greater in the end position of the armature than in the intermediate position when equal current is provided to the precharging coil, wherein said magnetic force corresponds to the restoring force of the means for restoring the armature to the initial position in the intermediate position of the armature and is greater than the restoring force in the end position of the armature.
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