Circuit breaker
First Claim
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1. An electric switching device, particularly a safety switch comprising a housing;
- and a contact system mounted in said housing and including contact bridges movable relative to said housing, stationary contact bars cooperating with the bridges to close or to open an electric circuit, a contact bridge carrier supporting two contact bridges and including means for resiliently pressing the bridges against opposite sides of the contact bars, and converting means movable relative to said housing between two positions and being engageable with at least a part of the contact system so that in one position the switching device operates as a circuit maker and in the other position as a circuit breaker, said converting means including a center piece mounted on said bridge carrier between said two bridges and being displaceable between a first position in which, in the rest position of said bridge carrier, both bridges are spaced apart from the contact bars so that the device operates as a circuit breaker, and a second position in which one of the bridges is spaced apart from the contact bars and the other bridge is in contact with the contact bars so that the device operates as a circuit maker.
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Accused Products
Abstract
An electric switching device of the type having a contact system includes two stationary contact bars and movable contact bridges for interconnecting the bars. To convert the switching device from a circuit maker to a circuit breaker, or vice versa, a control member is provided in the form of a shiftable slide having insulating projections which in one end position of the slide are displaced between one bridge and a contact bar while the other projection is out of the range of movement of the bridges, and in the other end position the other insulating projection interrupts the contact between the other bridge and the assigned contact bar.
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Citations
14 Claims
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1. An electric switching device, particularly a safety switch comprising a housing;
- and a contact system mounted in said housing and including contact bridges movable relative to said housing, stationary contact bars cooperating with the bridges to close or to open an electric circuit, a contact bridge carrier supporting two contact bridges and including means for resiliently pressing the bridges against opposite sides of the contact bars, and converting means movable relative to said housing between two positions and being engageable with at least a part of the contact system so that in one position the switching device operates as a circuit maker and in the other position as a circuit breaker, said converting means including a center piece mounted on said bridge carrier between said two bridges and being displaceable between a first position in which, in the rest position of said bridge carrier, both bridges are spaced apart from the contact bars so that the device operates as a circuit breaker, and a second position in which one of the bridges is spaced apart from the contact bars and the other bridge is in contact with the contact bars so that the device operates as a circuit maker.
- View Dependent Claims (2, 3)
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4. An electric switching device, particularly a safety switch comprising a housing;
- and a contact system mounted in said housing and including contact bridges movable relative to said housing, stationary contact bars cooperating with the bridges to close or to open an electric circuit, a contact bridge carrier supporting two contact bridges arranged at both sides of juxtaposed contact bars, the bridge carrier with the bridges being movable between a rest position and an activated position, and converting means movable relative to said housing between two positions and being engageable with at least a part of the contact system so that in one position the switching device operates as a circuit maker and in the other position as a circuit breaker, said converting means including a slider movable relative to said housing in a limited linear path transversely to the path of movement of the bridge carrier and supporting at least two insulating projections so that in one end position of the slider one projection is located between a contact bridge and a contact bar while the projection is located outside the range of movement of the bridges whereas in the other end position of the slider the other projection is located in the path of movement of the other bridge and the one projection is out of the range of movement of the bridges.
- View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
Specification