Load protection switch with delayed overcurrent release - has additional bimetallic element actuating switch for advance warning signalling device

The delayed overcurrent release uses a bimetallic element (13) which responds to the current intensity to release a latch for the movable switch block of the load protection switch (1). An auxiliary switch (30) controlling a signalling device (42) is operated before the latch is released. The auxili...

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Bibliographische Detailangaben
1. Verfasser:	TROEBEL,WERNER
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	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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Beschreibung
Zusammenfassung:	The delayed overcurrent release uses a bimetallic element (13) which responds to the current intensity to release a latch for the movable switch block of the load protection switch (1). An auxiliary switch (30) controlling a signalling device (42) is operated before the latch is released. The auxiliary switch (30) is pref. operated by an additional bimetallic element (29) receiving the same current. Pref. each pole of the load protection switch has an additional bimetallic element (29) for each switch pole, which together with the corresponding signalling devices (30) are mounted together in a common housing (22). The warning signalling system can be mounted as an attachment to the housing of the load protection switch.