Japanese Patent JPH0218510

Y2

An overcurrent relay comprises a housing having an external portion, an overcurrent responsive mechanism, disposed within the housing, for opening or closing a pair of contacts in response to an overcurrent, an adjusting screw device for adjusting the operating current of the overcurrent responsive mechanism, the adjusting screw device being rotatably supported by the housing and having serrations on the periphery thereof, and an engaging member mounted on the external portion of the housing for engaging with a serration of the adjusting screw device for preventing an unintentional rotation of the adjusting screw device.

JP5656899

Manufacturing method of thermal tripping device and circuit breaker using thermal tripping device manufactured by the manufacturing method

JP18431084U

May 23, 1990

December 06, 1984

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H01H61/00; H01H61/01; H01H71/74; H01H83/22; (IPC1-7): H01H61/01

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