22results about "Switch terminals/connections" patented technology

To provide a circuit breaker capable of improving the workability of wiring work.SOLUTION: A circuit breaker A1 has a terminal block B1 to be electrically connected to a conductor of the primary wire. The terminal block B1 includes a first terminal board, a second terminal board 60, a spring member, a case 5, and a connecting conductor 61. The second terminal board 60 conducts to the first terminal board. The spring member gives a contact pressure to the conductor in the direction of contact with the first terminal board. The case 5 houses the first terminal board and the spring member. The connecting conductor 61 electrically connects the second terminal board 60 placed outside the case 5 and the first terminal board. At least a part of the connecting conductor 61 is derived outside of the case 5.SELECTED DRAWING: Figure 12

To provide a plug-in terminal which can be easily manufactured by a general-purpose press brake and can excellently maintain contact pressure of two contact parts over a long period of time.SOLUTION: The plug-in terminal 10 includes two terminal elements 110, formed by bending a metal plate in a surface direction and a back surface direction thereof, and an electric conductor 120 for electrically connecting each terminal element to a power distribution apparatus. Each terminal element 110 includes a fixed portion 111 located on one end side, a first inclined portion 112 bent from the fixed portion 111 in the front surface direction, a second inclined portion 113 bent from the first inclined portion 112 in the back surface direction, and a contact portion 114 continuous with the second inclined portion 113 and located on the other end side, and the terminal elements 110 are arranged such that the back surfaces thereof face each other and are fixed in a state where one end side of the electric conductor 120 is sandwiched between the two fixed portions 111. A gap into which the bus bar can be inserted is formed between the two contact portions 114.SELECTED DRAWING: Figure 2

To provide a circuit breaker which can easily grip a position of a terminal fitting at the current point.SOLUTION: A circuit breaker comprises: a first right electrode display part 34B for displaying that a first terminal member 10 is positioned at a first position; and a second right electrode display part 34A for displaying that the first terminal member 10 is positioned at a second position. The circuit breaker comprises: a right electrode display body 31 that can be moved between a first display position where the first right electrode display part 34B is exposed to a front surface of a main body case 2 and a second display position where the second right electrode display part 34A is exposed, in accordance with the movement of the first terminal member 10; a first left electrode display part 38A for displaying that a second terminal member 20 is positioned at a second position; and a second left electrode display part 38B for displaying that the second terminal member 20 is positioned at a third position. The circuit breaker is provided with a left electrode display body 35 that can be moved between a third display position where the first left electrode display part 38A is exposed to the front surface of the main body case 2 and a fourth display position where the second left electrode display part 38B is exposed, in accordance with the movement of the second terminal member 20.SELECTED DRAWING: Figure 2

To enable leading and wiring of a wire in a large space before assembling a breaker.SOLUTION: A distribution board has a connector 4 for branching that is interposed when connecting a branch circuit breaker 3 to a branch wiring 9. The connector 4 for branching comprises a first branch unit 4a that has a terminal fitting 41 connected to a secondary side terminal 32 of the branch circuit breaker 3 and is mounted to the branch breaker 3 and a second branch unit 4b that has a wire connecting part 44 to which the branch wiring 9 is connected and is attached to a housing 10 of a distribution board 1. The first branch unit 4a and the second branch unit 4b have a connecting part for connecting them to each other. A connecting part 42 of the first branch unit 4a mounted to the branch circuit breaker 3 and a connecting part 43 of the second branch unit 4b attached to the housing 10 are connected to each other when the branch breaker 3 is assembled to the distribution board 1. This connection makes the secondary side terminal 32 of the branch circuit breaker 3 to be connected to the branch wiring 9.SELECTED DRAWING: Figure 2

The present disclosure relates to a circuit breaker comprising at least one pole arranged in sequence in a first direction, each pole comprising: a housing comprising a first cavity and a second cavity separated by a partition; a stationary contact assembly comprising a first stationary contact disposed in the first cavity and a second stationary contact disposed in the second cavity, wherein the first stationary contact and the second stationary contact are separated from each other; a movable contact assembly comprising a movable contact body and a first movable contact extending from the movable contact body into the first cavity and a second movable contact extending from the movable contact body into the second cavity, wherein the first movable contact and the second movable contact are capable of simultaneously contacting or separating from the first stationary contact and the second stationary contact, respectively; a first arc extinguishing system disposed in the first cavity and configured to extinguish a first arc generated when the first movable contact separates from the first stationary contact; and a second arc extinguishing system disposed in the second cavity and configured to extinguish a second arc generated when the second movable contact separates from the second stationary contact.

A plug-in terminal 10 according to the present invention comprises: two terminal elements 110 each formed by bending a metal plate in the front surface direction and the back surface direction thereof; and an electrical conductor 120 for electrically connecting each terminal element to a power distribution device. Each terminal element 110 includes: a fixed part 111 positioned on one end side; a first inclined part 112 extending from the fixed part 111 and obtained by bending the metal plate in the front surface direction; a second inclined part 113 extending from the first inclined part 112 and obtained by bending the metal plate in the back surface direction; and a contact part 114 continuous with the second inclined part 113 and positioned on the other end side. The terminal elements 110 are arranged so that the back surfaces thereof face each other and are fixed with one end side of the electrical conductor 120 held between the two fixed parts 111, thereby forming a space between the two contact parts 114 where a busbar can be inserted.

To obtain a circuit breaker capable of fixing a round crimp terminal without using a crimp terminal tightening screw and reducing restrictions on an insertion direction of the round crimp terminal.SOLUTION: A terminal device includes: a terminal fitting 8 that has a fixed portion 8b fixed to a circuit breaker terminal, a connecting portion 8a2 connected to a round crimp terminal, extending from the fixed portion 8b, and having a round hole in a plane parallel to a side surface of the circuit breaker main body, and a pressing spring piece 8c having a pressing portion 8c2 pressing the connected round crimp terminal against the connecting portion 8a2; and a rod 10 that has an engaging portion 10a and rotates. Either or both of an upper side and a lower side of the connecting portion 8a2 and a power supply side or a load side of the connecting portion 8a2 are open, and the round crimp terminal can be inserted from an opening direction.SELECTED DRAWING: Figure 10

The invention, which relates to the technical field of the circuit breaker, discloses a lower isolation gas box circuit breaker comprising a circuit breaker body, a transmission assembly, a ventilation assembly and an arc extinguishing assembly. When small voltage is powered off, the ventilation assembly sucks gas and sprays the gas to the arc extinguishing assembly through the exhaust pipeline, gas spraying is stopped after the arc extinguishing assembly delays gas spraying for a period of time, and the sprayed arc extinguishing gas is increased along with the increase of the voltage; the circuit breaker body is grounded, the ventilation assembly stops sucking gas and sprays the gas to the arc extinguishing assembly through the exhaust pipeline, the arc extinguishing assembly stops running, the ventilation assembly and the arc extinguishing assembly form gas circulation, the contact rotates by different angles, different ventilation quantities are controlled, and different quantities of arc extinguishing gas are sprayed out. Therefore, a more efficient and accurate arc extinguishing effect is achieved, a part of arc extinguishing gas is sprayed out in a delayed manner, a better arc extinguishing effect is ensured, and meanwhile, back suction caused by insufficient spraying of rear-section gas due to sudden interruption of airflow is avoided.

To provide a circuit breaker which can separately display the connection states of a plurality of power lines by a simple configuration.SOLUTION: The circuit breaker includes: a plurality of terminals for changing the connection states of a plurality of power lines by moving; a body unit rotatable around a rotation axis; a display unit provided along the circumferential direction of rotation of the body unit, the display unit visually displaying the states of the terminals; a rotation unit having a first action unit provided in a position different from a position on the axis of rotation in a radial direction of rotation of the body unit; and an output unit having a second action unit which works in connection with movement of the terminals. The first action unit is engaged with the second action unit and rotates the body unit around the axis of rotation in connection with movement of the second action unit.SELECTED DRAWING: Figure 9

To provide a circuit breaker capable of visually checking the connection status of wires, and a distribution board.SOLUTION: The circuit breaker has a terminal block B1 that is electrically connected to a conductor of a primary side wire; a contact part inserted into an electrical path between the terminal block B1 and a secondary terminal; and an opening / closing mechanism that opens and closes the contacts. The terminal block B1 includes a terminal board, a spring member 2, an adjustment screw 3, a display member 8, and a case 5. The terminal board is electrically connected to an electric circuit. The spring member 2 gives a contact pressure to the conductor in the contacting direction with the terminal board. The adjustment screw 3 is rotatably arranged to adjust the contact pressure by changing the amount of deformation of the spring member 2 by moving in the axial direction according to the rotation. The display member 8 displays the connection status of the conductor to the terminal board by rotating in conjunction with the rotation of adjustment screw 3. The case 5 houses the terminal board, the spring member 2, the adjustment screw 3, and the display member 8.SELECTED DRAWING: Figure 6

A static contact assembly disclosed by the present invention comprises a static contact busbar, one end of the static contact busbar is fixedly provided with a static main contact, one end of the static contact busbar is also detachably and fixedly provided with a conducting bar, the conducting bar is fixedly provided with a static arc contact, the static arc contact comprises a static main arc contact and a static auxiliary arc contact, and the static main arc contact and the static auxiliary arc contact are detachably and fixedly arranged on the conducting bar. The static main arc contact, the static auxiliary arc contact and the static main contact extend towards the same direction and are arranged at intervals, and the static auxiliary arc contact is located between the static main arc contact and the static main contact. The invention further discloses a circuit breaker provided with the static contact assembly. The objective of the invention is to provide a static arc contact which is high in breaking stability, has a long electrical life, can be replaced conveniently after a static arc contact is worn or ablated, and can reduce the replacement cost.

To provide a circuit breaker which can separately display the connection states of a plurality of power lines by a simple configuration.SOLUTION: The circuit breaker includes: a plurality of terminals each having a protrusion unit extending along a first direction, the terminals changing the connection states of a plurality of power lines by moving in a second direction vertical to the first direction; an output unit having a guidance unit and a plurality of contact units, the guidance unit including a protrusion unit movable along the second direction in the guidance unit and the contact units being provided in the guidance unit and contacting with the protrusion unit in association with movement of at least one of the plurality of terminals; and a display unit for visually displaying the states of the plurality of terminals in association with the movement of the output unit. At least one protrusion unit is in contact with at least one different contact unit according to the state of the plurality of terminals.SELECTED DRAWING: Figure 4

To provide a conductive bar capable of facilitating installation.SOLUTION: A conductive bar 1 is a conductive bar used for a circuit breaker 10 that interrupts electric current. The conductive bar 1 comprises an elongated conductor connected to a wire through which electric current flows, and a sensor fixed to the conductor that performs detection related to the electric current.SELECTED DRAWING: Figure 1

The problem disclosed herein is to provide a conductive bar capable of facilitating construction. This conductive bar (1) is used in a circuit breaker (10) that cuts off a current. The conductive bar (1) comprises: a longitudinal conductor that is connected to an electric wire through which a current flows; and a sensor that is fixed to the conductor and performs detection relating to the current.

To provide a terminal seat capable of attaining space saving while appropriately securing a passage in which a gas can be circulated, inside a circuit breaker, and the circuit breaker.SOLUTION: A terminal seat electrically connecting a wire which is connected to a circuit breaker with a contact, comprises: an engage plate part which is engaged with an end of the wire extending from one side together with a wire lock part; a mounting plate part on which the wire lock part is mounted; a first connecting plate part connecting the engage plate part with the mounting plate part; a contact plate part where the contact which is electrically connectable to the wire lock part is provided; and a second connecting plate part connecting the wire lock part with the contact plate part. A storage place is defined which is enclosed by the engage plate part, the mounting plate part, and the first connecting plate part and in which the wire lock part can be stored. An opening / closing space is defined which is enclosed by the mounting plate part, the contact plate part, and the second connecting plate part and which penetrates at least in an extension direction of the end of the wire and is capable of performing an opening / closing operation of the contact and the other contact.SELECTED DRAWING: Figure 5

To provide a connection failure detection circuit and a circuit breaker, capable of detecting a connection failure even with a voltage value of which generated potential difference does not reach an operation voltage of a photo coupler, and not receiving an influence of a cable way current.SOLUTION: A connection failure detection circuit includes: a differential amplifier circuit 21 that amplifies a potential difference generated in a connection terminal 10; a determination part 22 that determines as generation of a connection failure if the amplified potential difference exceeds a predetermined threshold value; a current measurement part 24 that measures a cable way current; and an amplification rate control part 25 that changes and controls an amplification rate of the differential amplifier circuit 21. The amplification rate control part 25 makes the amplification rate of the differential amplifier circuit 21 be in reverse proportion at a predetermined rate to the cable way current, and a disconnection mechanism part of a circuit breaker 1 performs an open operation of a contact part 13 when the determination part 22 determines generation of a connection failure, and the circuit breaker 1 performs a disconnection operation.SELECTED DRAWING: Figure 3

To provide a distribution board in which a plurality of distribution apparatuses having housings of different width dimensions can be installed side by side in the lateral direction without a gap, and which can be made compact by reducing a dead space.SOLUTION: The distribution board 5 includes a plurality of bus bars 41, three distribution devices 52, 53, 54, a plurality of plug-in terminals 10 for electrically connecting the respective distribution devices 52, 53, 54 to the respective bus bars 41 by a plug-in method, and a bar holder 42 for holding the respective bus bars side by side in a vertical direction at intervals in a horizontal state. The bar holder 42 includes a plurality of insertion ports 423 partitioned by a plurality of first C1 portions 421 extending in the vertical direction, and each of the insertion ports 423 has a length such that a length between central walls of two adjacent insertion ports 423 is an integer multiple of the greatest common divisor X of the widths W1, W2, and W3 of the housings 521, 531, and 541 of the power distribution devices 52, 53, and 54.SELECTED DRAWING: Figure 20

The invention relates to a branch (200) for connecting a consumer (1000), wherein the branch (200) comprises a circuit breaker (150), a downstream contactor (180) and a connector (100) which forms an electrical connection between the circuit breaker (150) and the downstream contactor (180), - wherein the connector (100) is formed in one piece, has at least one sensor (200) and an evaluation unit (210) for the measured values ​​of the sensor (200), and has first contacts (101) to the power switch (150) and second contacts (102) to the downstream contactor (180) in the same plug-in direction u, characterized in that - the circuit breaker (150) has a Maglatch (130) for tripping the circuit breaker (150), which is integrated into a housing of the circuit breaker (150), - the connector (100) has a control unit (140) for controlling the Maglatch (130), and - the branch (200) has an interface (135) that forms a signal connection between the control unit (140) and the Maglatch (130).

This invention provides an insulating base for circuit breakers that eliminates the need for component management for all types of 2-pole, 3-pole, and 4-pole circuits, and by using small components that are less prone to warping, it can suppress high-temperature creep when interposed between the circuit breaker and the mounting panel, while also reducing manufacturing costs. [Solution] The insulating bases 11 and 12 are positioned between the back surface of a circuit breaker 2 of the rear connection type, which can be used for any of the 2-pole, 3-pole, or 4-pole types, and the mounting panel 1. The insulating bases 11 and 12 can be used in common with any of the circuit breakers 2 of the 2-pole, 3-pole, or 4-pole types, and consist of a plurality of divided bodies 20, 21, and 22 arranged in the width direction of the circuit breaker in which a plurality of studs 7 protrude, and the plurality of divided bodies have stud insulating parts 15a to 15c which are cylindrical spaces that cover the outer circumference of the rod-shaped part 7a of the studs 7.

To provide a circuit breaker which can distinctively display connection states of a plurality of power lines with a simple structure.SOLUTION: A connection part 40 is formed by a member which has flexibility and is non-stretchable. Since the member forming the connection part 40 has flexibility, an output part 30 and a display part 50 can be linked to each other according to a physical relationship therebetween without providing a complicated mechanism. Further, since the member forming the connection part 40 is a non-stretchable member, the display part 50 can be moved accurately according to a distance that the output part 30 moves. Therefore, the display part 50 can distinctively display connection states of a plurality of power lines with high accuracy without needing a complicated mechanism and dimensional accuracy of components.SELECTED DRAWING: Figure 8

To provide a circuit breaker connector capable of wire connection processing in a large space of a distribution board before assembling a circuit breaker.SOLUTION: A circuit breaker connector has a first branch unit 4a that has a terminal fitting 41 connected to a secondary side terminal 32 on a branch breaker 3 and is mounted to the branch breaker 3 and a second branch unit 4b that has a wire connecting portion 44 to which a branch wiring 9 is connected and is attached to a housing 10 of a distribution board 1. The first branching unit 4a and the second branching unit 4b have a connecting part for connecting them to each other. By connecting them, the terminal fitting 41 and the wire connecting portion 44 are electrically connected to each other. By assembling the branch breaker 3 with the first branch unit 4a to the distribution board 1, a connecting portion 43 of a second branch unit 4b attached to the housing 10 is connected to a connecting portion 42 of the first branch unit 4a. Thereby, the branch wiring 9 is connected to the secondary-side terminal 32 of the branch breaker 3.SELECTED DRAWING: Figure 2

A solid-state DC circuit breaker and its control method are disclosed. The solid-state DC circuit breaker includes a first switch connected to a main line and a switching assembly. The switching assembly includes a second switch, a semiconductor power switch, and a control module for controlling the semiconductor power switch. The second switch and the semiconductor power switch are connected in series and in parallel across the first switch. When the circuit breaker trips, the first switch opens before the second switch. After the control module detects that the first switch has changed from closed to open, before the second switch opens, the control module drives the semiconductor power switch to conduct first and then cut off. This invention provides a solid-state DC circuit breaker and its control method. The control module enables the semiconductor power switch to conduct for a short time, which helps to extinguish the electric arc and reduce the damage of the arc to the equipment. It also has the advantages of small size and low cost.