14results about "Switches with electromagnetic release" patented technology

A circuit breaker for an electric current, said device comprising a movable member (2) provided with an electrical conductor (4), said device being configured to move said movable member (2) between a first position, referred to as armed, allowing current to flow in the conductor (4), and a second position, referred to as disarmed, interrupting said current flow, said device further comprising an actuator (12), configured to trigger a transition of the movable member (2) from the armed position to the disarmed position in the event of a fault on an electrical circuit in which said device is integrated, said device further comprising a reset member (36) having a manual actuation zone (38), configured to move the movable member (2) from the disarmed position to the armed position, thereby also triggering a reset of the actuator (12), said actuation zone (38) forming a visual indicator of a disarmed state of said device.

To provide a determination device capable of improving determination accuracy for determining whether or not a factor which brings a breaker into a trip state is overcurrent, an automatic resupply device, a breaker with automatic resupply function and a program.SOLUTION: A determination device 4 comprises: a current detection unit 41 which detects whether or not a current value to be electrified to a breaker 2 exceeds a predetermined threshold; a handle position detection unit 42 which detects whether or not a handle 23 of the breaker 2 is in an open state; and a determination unit 44 for determining that a cause which brings the breaker 2 into a trip state is overcurrent. The current detection unit 41 is configured to hold a current detection signal indicating that the current value exceeds the predetermined threshold for a predetermined time after the current value exceeds the predetermined threshold. The determination unit 44 determines whether or not the factor which brings the breaker 2 into the trip state is overcurrent based on the current detection signal and a handle opening / closing signal indicating the detection that the handle 23 of the breaker 2 is in the open state.SELECTED DRAWING: Figure 2

Embodiments of this application provide a switch, a power conversion apparatus, and a power supply system. The power supply system includes a control unit, a switch, a direct current source, and a power conversion unit. The switch is electrically connected between the direct current source and the power conversion unit, and the control unit is configured to send a switch-off signal to the switch when a fault occurs on the direct current source or the power conversion unit. The switch includes a contact component, a trip-free structure, and a knob that are sequentially disposed in a stacked manner in a first direction. A trip unit of the trip-free structure is configured to receive the switch-off signal, to unlock the trip unit from the cradle. The cradle drives the connecting rod structure to move, to separate the moving contact from the fixed contact. When a circuit is faulty, the power supply system can automatically drive the switch provided in this application to be switched off without a manual operation.

The present invention relates to an electronic trip section of a circuit breaker for wiring, and more particularly, to an electronic trip section of a circuit breaker for wiring having a function of preventing interphase interference. According to one embodiment of the present invention, the electronic trip part of the circuit breaker for wiring is provided with the magnetic field absorber wound with the Rogowski coil on the current detection part, so that the magnetic field can be prevented from diffusing to the adjacent phase.

To provide an electromagnetic trip device capable of assisting a circuit breaker to quickly open a contact portion when an abnormal current occurs.SOLUTION: An electromagnetic trip device 10 includes a bottom portion 12 and a side wall portion 13 standing on the bottom portion 12, and includes a fixed piece 11 that forms a groove through which an electric circuit 20 of a circuit breaker 60 passes and a movable piece 16 having a first portion 17 that faces the upper surface 13a of the side wall portion 13, and a second portion 18 facing the inner surface of the side wall portion 13.SELECTED DRAWING: Figure 1

A circuit breaker is provided, which includes a housing, and a circuit breaker phase pole and a leakage protection pole arranged on two sides of the housing side by side, wherein the leakage protection pole includes a zero-sequence current transformer, a leakage operating mechanism, and a leakage testing mechanism, and a major loop of the circuit breaker phase pole passes through the zero-sequence current transformer; the leakage testing mechanism includes an elastic member, a test button, and a first contact member and a second contact member respectively connected to two ends of a test loop, one end of the elastic member is provided with a first contact portion matched with the leakage operating mechanism or a phase pole operating mechanism, the other end of the elastic member is provided with a second contact portion matched with the test button, the leakage operating mechanism or a phase pole circuit breaker is capable of pushing the first contact portion to contact with the first contact member when the circuit breaker is switched on, the test button is capable of pushing the second contact portion to contact with the second contact member, the testing mechanism forms the test loop with double breakpoints through two contact points of the first contact portion and the second contact portion on the elastic member, and the first contact portion and the second contact portion are respectively driven by the electric leakage operating mechanism and the test button.

To realize cost reduction and size reduction by reducing the number of components used for switching a contact mechanism.SOLUTION: An electronic overload relay includes a contact mechanism that can be switched between a steady state and a trip state, an electromagnet having a movable shaft that moves in the axial direction when energized, a slider that moves in the axial direction in conjunction with the movable shaft when energized, and a driven member that alternately switches the stop position of the slider after movement in the axial direction between a first stop position corresponding to the steady state and a second stop position corresponding to the trip state each time the electromagnet is energized.SELECTED DRAWING: Figure 4

The invention relates to a protection device for an alternating current electrical installation, equipped with a compact element comprising a magnetic tripping coil and a protection relay coil and an electronic circuit connected to the protection relay coil, characterized in that said electronic circuit comprises an assembly for determining the root mean square value of the intensity of the current flowing in said magnetic tripping coil as a function of the signal present at the end of said protection relay coil, this assembly being implemented by an analog-digital converter (71), a calculation unit (72) and an interface (70), said calculation unit (72) being configured to produce a digital value representative of the root mean square value of the intensity of the current, being connected to a communication element (96) and being configured to transmit said digital value representative of the root mean square value of the intensity of the current to said communication element (96).

To obtain an overcurrent trip device which can realize a reduction in the size of the device and a circuit breaker using the same. An overcurrent trip device (100) includes a conductor (3) connected to a main circuit of a circuit breaker (200); a stationary core (1) which is formed so as to enclose the conductor (3) and one portion of which is opened; and a moving core (2) which is disposed in the opened position of the stationary core (1) with a magnetic gap (4) interposed between the moving core and the stationary core (1), is disposed so as to be movable by an electromagnetic force of when an overcurrent flows through the conductor (3), wherein the stationary core (1) is disposed in abutment with the conductor (3), and the moving core (2) is in contact with the conductor (3) when no overcurrent flows through the conductor (3) before in operation.

The invention relates to the technical field of circuit breakers, in particular to a plug-in circuit breaker and a control system.The plug-in circuit breaker comprises a protective shell and a tripping mechanism installed in the protective shell, a moving contact piece is arranged in the tripping mechanism, a static contact is arranged in the protective shell, and the moving contact piece is driven to move through the tripping mechanism; therefore, the moving contact piece and the static contact are in contact conduction or separated disconnection, so that the state switching of the circuit breaker is realized. According to the plug-in circuit breaker, the positive pressure gas can be generated when the circuit breaker trips out, the positive pressure gas is blown out through the gas spraying hole in the moving contact piece, arc blowing guiding is conducted on an electric arc between the moving contact piece and the static contact, the electric arc enters the arc extinguish chamber more efficiently and stably, high temperature of the arc extinguish chamber can be discharged easily, and the service life of the product is prolonged.

To provide a circuit breaker that can restrict the movement of the handle by restricting the movement of the link when the contacts are welded, thereby preventing discrepancies between the ON / OFF state indicated by the handle and the open / closed state of the contacts of the circuit breaker.SOLUTION: A circuit breaker includes a fixed contact 8, a movable contact 9 that can come into contact with the fixed contact 8, a push plate 12 that is arranged such that the movable contact 9 can be operated, a link 13 that has one end that can come into contact with the push plate 12, and a handle 4 that is connected to the other end of the link 13 and is arranged such that the push plate 12 can be operated such that the fixed contact 8 and the movable contact 9 come into contact or separate, and when the fixed contact 8 and the movable contact 9 are in a state where they are welded together, the push plate 12 has a restraining portion 12b that contacts the link 13 and restrains the movement of the link 13 by operating the handle 4 such that the fixed contact 8 and the movable contact 9 separate.SELECTED DRAWING: Figure 3