Electronic overload relay switch actuation

The disclosed concept provides for an operating mechanism in a overload relay assembly having a solenoid with a permanent magnet. The solenoid includes a ferrous output member. The solenoid moves the output member between a first retracted position and a second extended position. When the output mem...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: NAIVA MATTHEW WILBUR, HECKENKAMP DANIEL PATRICK, KURLAND THOMAS FRANCIS
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:The disclosed concept provides for an operating mechanism in a overload relay assembly having a solenoid with a permanent magnet. The solenoid includes a ferrous output member. The solenoid moves the output member between a first retracted position and a second extended position. When the output member is in the first retracted position, the permanent magnet maintains the output member in the first retracted position. Thus, in a system wherein the overload relay assembly interrupts power to its own operating mechanism solenoid, the permanent magnet maintains the output member in the first retracted position even when the solenoid is de-energized.