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US 6,600,640 B1Granted
Electromagnetic relay
AssigneeTyco Electronics Logistics AG
InventorsThomas Buscher, Bican Samray
Life of this patent
Estimating the term…
Abstract
The invention relates to an electromagnetic relay, comprising a magnetic system (6) with an exciting field coil (WR), a core and an armature. Each load current circuit can be closed by a movable contact element and by at least one fixed contact element. A reed contact (KR) is coupled to a load current conductor (1) in each load current circuit. Means to generate and process an overcurrent signal and to disconnect the control current are coupled to the reed contact (KR).
Claims20
An electromagnetic relay comprising:
- a magnetic system having an exciting coil (WR) through which a control current flows and which is connected to a control voltage (US), and having a core and an armature, with the core and the armature forming at least one operating air gap;
- at least one movable contact element and at least one fixed contact element through which a load current circuit can be closed in response to the presence of said control current flowing through said exciting core;
- coil and contact terminal elements;
- a reed contact in each load current circuit, which is magnetically coupled to a load current conductor having a load current flowing therethrough;
- and
- means magnetically coupled to the reed contact for generating and processing an overcurrent signal and for switching off the control current;
- wherein these means further process said overcurrent signal such that the switched-off state of the control current is maintained until switching off the control voltage.
4 more elements
Dependencies are inferred from the claim text.