CONTACTOR WITH COIL POLARITY REVERSING CONTROL CIRCUIT

申请号 US15365020 申请日 2016-11-30 公开(公告)号 US20180151321A1 公开(公告)日 2018-05-31
申请人 TYCO ELECTRONICS CORPORATION; 发明人 Richard R. GORENFLO; Richard A. GAST;
摘要 A contactor includes a plurality of switches mechanically coupled to an actuator. The actuator is moveable between operational and tripped positions. Switches that are closed in the operational position are open in the tripped position, and vice versa. The actuator extends through a coil as a core. The coil moves the actuator when an input signal is applied to the coil. A first input circuit receives a power-up input signal to transition the contactor from a tripped position to an operational position. A second input circuit receives a trip signal to transition the contactor from the operational position to the tripped position. First and second switches, coupled to respective first and second ends of the coil, reverse the polarity of the coil each occurrence of the actuator being actuated in preparation for the coil to be energized and magnetically polarized in an opposite direction during a next subsequent actuation.
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