发明名称 |
CIRCUIT BREAKER WITH TAMPER INDICATING CALIBRATION MEANS |
摘要 |
A circuit breaker with a thermal trip has a calibration opening in the electrically insulating housing through which a tool may be inserted and rotated to distort a support plate on which a bimetal is mounted to calibrate the thermal trip after the circuit breaker has been fully assembled and enclosed within the insulating housing. A tamper indicating seal in the form of a destructible film secured over the calibration opening by an adhesive having an adhesive strength exceeding the tensile strength of the destructible film provides a visual indication of any subsequent attempts to tamper with the calibration setting.
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申请公布号 |
CA2045853(A1) |
申请公布日期 |
1992.01.31 |
申请号 |
CA19912045853 |
申请日期 |
1991.06.27 |
申请人 |
WESTINGHOUSE ELECTRIC CORPORATION |
发明人 |
MRENNA, STEPHEN A. |
分类号 |
H01H71/06;H01H71/74;H01H73/06;(IPC1-7):H01H37/52;H01H71/16;H01H37/08 |
主分类号 |
H01H71/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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