Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Automatic circuit-interrupting devices
Patent
1987-07-31
1988-06-28
Broome, H.
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Automatic circuit-interrupting devices
335 9, 337 79, H01H 7312
Patent
active
047542454
ABSTRACT:
A multi-pole circuit interrupter comprising first and second pole units separated by a partition wall in a housing, each of the pole units having a pair of separable contacts. The contacts of the first and the second pole units are connected by a cross bar for simultaneous movement. An operating mechanism is disposed in the first pole unit for separating the contacts in response to an overcurrent flowing through the interrupter. An alarm switch is disposed in the second pole unit for indicating the tripping of the operating mechanism, and an actuator is disposed between the operating mechanism and the alarm switch for detecting the tripping of the operating mechanism and actuating the alarm switch. The actuator comprises a rotatable shaft supported in the housing and extending through the partition wall including a substantially circular opening having a diameter slightly larger than that of the rotatable shaft, an actuator arm secured to one end of the rotatable shaft for movement caused by the tripping action of the operating mechanism, and an actuator level secured to the other end of the rotatable shaft for engaging and actuating the alarm switch.
REFERENCES:
patent: 4123734 (1978-10-01), Maier et al.
patent: 4209761 (1980-06-01), Klein et al.
patent: 4246557 (1981-01-01), Michetti et al.
Kawakami Jun-ichi
Toda Haruhisa
Broome H.
Mitsubishi Denki & Kabushiki Kaisha
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