MOLDED CASE SWITCH HAVING IMPROVED PERFORMANCE AND SINGLE-PHASE PROTECTION

A protective system for a circuit having a fuse and a switch serially connected in the circuit. The switch has separable contacts and a flux-transferring trip mechanism which upon being energized cause the switch contacts to thereby open. The switch contacts once opened are mechanically interlocked...

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Bibliographic Details
Main Authors WAFER, JOHN A, MAIER, ALFRED E
Format Patent
LanguageEnglish
French
Published 13.08.1985
Edition4
Subjects
BASIC ELECTRIC ELEMENTS
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRIC SWITCHES
ELECTRICITY
EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
EMERGENCY PROTECTIVE DEVICES
GENERATION
RELAYS
SELECTORS
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Summary:A protective system for a circuit having a fuse and a switch serially connected in the circuit. The switch has separable contacts and a flux-transferring trip mechanism which upon being energized cause the switch contacts to thereby open. The switch contacts once opened are mechanically interlocked and may not be closed until the switch has been reset. A transformer is connected across the fuse with the output of the transformer being connected to a rectifying circuit, thereby producing a direct current output when the fuse blows. When the fuse blows a voltage is generated across the fuse at a predetermined rate thereby producing a direct current output which then energizes the flux-transferring trip mechanism which in turn opens the switch contacts.
Bibliography:Application Number: CA19820396733