Circuit interrupter with improved electromechanical...

Details Circuit interrupter with improved electromechanical... Circuit interrupter with improved electromechanical...

H - Electricity

01

H

306/74

H01H 71/24 (2006.01) H01H 71/10 (2006.01) H01H 73/36 (2006.01) H01H 75/10 (2006.01) H01H 83/12 (2006.01)

Patent

CA 1215092

19 A B S T R A C T CIRCUIT INTERRUPTER WITH IMPROVED ELECTRO- MECHANICAL UNDERVOLTAGE RELEASE MECHANISM The invention relates to a circuit interrupter which is especially suitable for use under conditions of mechanical shock and vibration. The circuit interrupter includes a release mechanism (50; Figures 9-10) for tripping the interrupter upon the occurrence of an abnormal power supply condition, such as undervoltage. The release mechanism comprises a first movable structure (58) comprising an armature biased (spring 24) toward an actuated position and normally held magnetically (coil 54) in a home position from which to be released when the abnormal power supply condition occurs, and a second movable structure (62, 68-74) operable by the first movable structure to trip open the circuit interrup- ter. The two movable structures are interconnected in such manner (lever 60) as to be substantially balanced and to simultaneously move in opposite directions with respect to each other.

442951

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