Thermal overload relay
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United States of America Patent
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-
May 29, 2012
Grant Date -
Sep 30, 2010
app pub date -
Feb 16, 2010
filing date -
Mar 27, 2009
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A thermal overload relay includes a main bimetal for detection of an overload current, a shifter associated with the main bimetal, a release lever working according to a displacement of the shifter, a contact reversing mechanism for changing-over contacts by reversing action caused by rotation of the release lever, and a manipulation structure for manipulating the release lever and the contact reversing mechanism. The manipulation structure includes a reset bar for returning the contact reversing mechanism to an initial state. The reset bar is arranged to change-over between a manual reset state in which the reset bar can be pushed-in and an automatic reset state in which the reset bar is pushed-in and turned from the manual reset state and held in that state.
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