Ground fault circuit interrupter with indicator lamp and protective circuit powered from hot bus bar of interrupting contacts
First Claim
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1. A protection device connected between hot and neutral conductors of an AC power line, comprising:
- a protective circuit including a breaker coil operatively associated with a set of interrupting contacts, wherein said interrupting contacts include a hot bus bar;
an indicator lamp circuit including an indicator lamp connected between said hot conductor on a line side of said interrupting contacts and said hot bus bar; and
said protective circuit is powered from said hot bus bar.
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Abstract
An AC power line protection device which includes a protection circuit which guards against miswiring also has an indicator lamp which lights when the device is in the tripped condition and turns off when the device is reset. If the device is miswired after having been wired properly, the indicator lamp does not light when the device is tripped, and so provides a supplemental indication of miswiring. The protection circuit is powered from the hot line bus bar. The indicator lamp is also powered via the hot line bus bar of the interrupting contacts to meet safety standards.
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Citations
26 Claims
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1. A protection device connected between hot and neutral conductors of an AC power line, comprising:
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a protective circuit including a breaker coil operatively associated with a set of interrupting contacts, wherein said interrupting contacts include a hot bus bar;
an indicator lamp circuit including an indicator lamp connected between said hot conductor on a line side of said interrupting contacts and said hot bus bar; and
said protective circuit is powered from said hot bus bar. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A protection device connected between hot and neutral conductors of an AC power line, comprising:
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protective means for protecting a load side of said AC power line against a ground fault;
said protective means including a breaker coil operatively associated with a set of interrupting contacts, wherein said interrupting contacts include a hot bus bar;
indicator means for indicating a specified condition of said protection device;
said indicator means being connected between said hot conductor on a line side of said interrupting contacts and said hot bus bar; and
said protective means is powered from said hot bus bar. - View Dependent Claims (14, 15, 16)
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17. A method for protecting against miswiring a protection device connected between hot and neutral conductors of an AC power line, wherein said device includes an interrupter having two contacts on a hot bus bar connected respectively to line hot and load hot terminals and two contacts on a neutral bus bar connected respectively to line neutral and load neutral terminals, wherein said interrupter opens and closes to electrically disconnect and connect said load terminals, respectively, comprising the steps of:
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operatively associating a breaker coil of a protective circuit with said interrupter;
connecting an indicator lamp circuit between said hot conductor on a line side of said interrupter and said hot bus bar; and
powering said protective circuit from said hot bus bar. - View Dependent Claims (18, 19, 20, 21, 22)
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23. A method for protecting against miswiring a protection device, comprising the steps of:
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protecting a load side of said AC power line against a ground fault via said protection device;
operatively associating a breaker coil with a set of interrupting contacts inside said protection device, wherein said interrupting contacts include a hot bus bar;
indicating a specified condition of said protection device with an indicator;
connecting said indicator between said hot conductor on a line side of said interrupting contacts and said hot bus bar; and
powering said protective device from said hot bus bar. - View Dependent Claims (24, 25, 26)
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Specification