Abstract: A circuit breaker and a power supply system. The circuit breaker is disposed between a direct current power source and a load, the circuit breaker includes a first coil, a second coil, a switch unit, and a driver, where the switch unit and the driver form a linkage connection. The direct current power source is coupled to a first end of the first coil and a first end of the second coil, both a second end of the first coil and a second end of the second coil are coupled to one end of the switch unit, and the other end of the switch unit is coupled to the load. Inductive reactance of the first coil is less than inductive reactance of the second coil.

Abstract: A circuit breaker includes a mechanical switch circuit, and the mechanical switch circuit includes a busbar, a power module, and a drive module. The power module includes a movable contact and a stationary contact that is electrically connected to the busbar. When the movable contact is connected to the stationary contact, the mechanical switch circuit is connected. The drive module includes a switch circuit, a movable coil, and a stationary coil. The movable coil and the stationary coil are disposed adjacently, the switch circuit is configured to control a current direction of the movable coil and a current direction of the stationary coil, and the movable coil and the stationary coil attract or repel each other based on whether the current directions are the same to enable the movable coil to drive the movable contact to be connected to or disconnected from the stationary contact.

Abstract: This application discloses power distribution equipment and a power distribution system. The power distribution equipment includes a power distribution device and a power distribution box, where the power distribution device is capable of being inserted into and removed from the power distribution box; a connection port is disposed at a first end of the power distribution device, where the connection port is used to connect a power cable or a user load line; a power connection terminal is disposed at a second end of the power distribution device, where the power connection terminal is used to plug into a busbar inside the power distribution box; and the connection port and the power connection terminal are connected inside the power distribution device. A design in which the power distribution device is capable of being inserted into and removed from the power distribution box simplifies operation and improves convenience.

Abstract: A power supply system includes a switch unit and an operating mechanism. The switch unit includes: an arc-extinguishing functional component, a fixed contact assembly, a moving contact, and a first magnet assembly. The arc-extinguishing functional component is located inside the arc-extinguishing functional component and can move relative to the fixed contact assembly. The operating mechanism controls the switch unit to be opened when receiving a switch-off signal, so that the moving contact is separated from the fixed contact assembly. An electric arc is formed between the moving contact and the fixed contact assembly in a separation process. Directions of at least some magnetic induction lines of the first magnet assembly intersect a current direction of the electric arc to drive the electric arc to move towards the arc-extinguishing functional component. The first magnet assembly includes a first magnet and a second magnet that are spaced apart.

Abstract: A direct-current contactor includes a contact assembly, an arc extinguishing assembly, and a drive assembly. The arc extinguishing assembly is disposed around the contact assembly. The contact assembly includes a moving contact mechanism and a stationary contact mechanism that are disposed in pairs. The moving contact mechanism includes a moving contact. The stationary contact mechanism includes a stationary contact and an arc introducing plate disposed around the stationary contact. The arc introducing plate is configured to introduce an electric arc generated between the moving contact mechanism and the stationary contact mechanism into the arc extinguishing assembly. The drive assembly is configured to drive a connection or a disconnection of the moving contact and the stationary contact.

Abstract: A contact apparatus includes a base body, two fixed contacts, and a moving contact component. The base body has an inner cavity. The two fixed contacts are fastened to the base body at intervals and extend into the inner cavity of the base body. The moving contact component includes a pushing member and a moving contact. The pushing member is movably disposed through the base body. The moving contact is mounted on the pushing member and is located in the inner cavity of the base body. The pushing member is configured to drive the moving contact to move, so that the moving contact is in contact with or is separated from the two fixed contacts.

Abstract: A direct current contactor includes a case and two groups of contact components disposed in the case. Each group of contact components includes two moving contacts connected to each other and two fixed contacts. The direct current contactor further includes a drive system configured to drive the moving contacts to move in a direction close to or away from the fixed contacts, so that the moving contacts are connected to or disconnected from the fixed contacts. The case has an arc-extinguishing cavity. A first baffle in the arc-extinguishing cavity divides the arc-extinguishing cavity into a first arc-extinguishing chamber and a second arc-extinguishing chamber. The contact components are respectively located in the first arc-extinguishing chamber and the second arc-extinguishing chamber. In other words, the two groups of contact components are integrated into two arc-extinguishing chambers of one arc-extinguishing cavity and perform connection/disconnection drive by using a single drive system.

Abstract: A busway connector is provided including a base, a drive member, a connection component, and a locking member. The locking member is disposed through the base and fastened to the drive member, and the locking member fits with the base to drive the drive member to move in a first direction. The connection component includes a connection block and connection units connected in series in a row, each connection unit includes a first insulation sheet, a first conductive sheet fastened to the first insulation sheet, a second insulation sheet, and a second conductive sheet fastened to the second insulation sheet. A slot is formed between the first conductive sheet and the second conductive sheet, the first insulation sheet is elastically connected to the second insulation sheet by using an elastic member, and the connection block is slidably connected to the base.

Abstract: An electromagnetic switch, including a driving apparatus and a contact apparatus. The contact apparatus includes a moving contact assembly, a chamber, and two spaced fixed contacts disposed on a top part of the chamber. The moving contact assembly includes an insulating part, a push rod, a moving contact, and an elastic part. One end of the push rod is mounted on the driving apparatus, and the other end of the push rod is mounted on the insulating part. The moving contact is mounted on one side that is of the insulating part and that is back to the push rod. The elastic part is clamped between the insulating part and the moving contact, so that the moving contact is in contact with or separated from the pair of fixed contacts under the action of the push rod.

Abstract: A contact apparatus includes a fixed contact and a moving contact component. The moving contact component includes a push rod, a contact bracket, an insulated sleeve, a moving contact, and a contact spring. The insulated sleeve is fixedly sleeved on a first end of the push rod, a second end of the push rod is configured to connect a drive apparatus, the contact bracket is fixedly sleeved on the insulated sleeve, the moving contact and the contact spring are both flexibly sleeved on the insulated sleeve, the contact spring elastically abuts between the moving contact and the contact bracket, the moving contact and the fixed contact are disposed relative to each other in an extension direction of the push rod, and the moving contact can be driven by the push rod to be connected to the fixed contact.

Abstract: A communication power supply system includes an alternating current power distribution module, a rectifier module, a monitoring module, a direct current power distribution module, and a signal-driven collection board. The monitoring module sends a control signal to the direct current power distribution module by using the signal-driven collection board, where the control signal is used to control the closing or opening of a circuit in the direct current power distribution module. The communication power supply system uses the monitoring module to control the direct current power distribution module, to control whether to power on the loads connected to the direct current power distribution module.

Abstract: An electrical connector includes a first plug-connection module and a second plug-connection module, and the first plug-connection module and the second plug-connection module fit with each other through a plug-connection in a first direction. The first plug-connection module includes a first housing component and a first wiring portion. The second plug-connection module includes a second housing component, a second wiring portion, and a sliding conductor. A locking mechanism and a trigger mechanism are disposed between the first plug-connection module and the second plug-connection module; and while the locking mechanism is in a locked state, the locking mechanism locks the sliding conductor and the first wiring portion, to keep the sliding conductor connected to the first wiring portion. An elastic reset member is disposed between the second housing component and the sliding conductor.

Abstract: A busway connector is provided including a base, a drive member, a connection component, and a locking member. The locking member is disposed through the base and fastened to the drive member, and the locking member fits with the base to drive the drive member to move in a first direction. The connection component includes a connection block and connection units connected in series in a row, each connection unit includes a first insulation sheet, a first conductive sheet fastened to the first insulation sheet, a second insulation sheet, and a second conductive sheet fastened to the second insulation sheet. A slot is formed between the first conductive sheet and the second conductive sheet, the first insulation sheet is elastically connected to the second insulation sheet by using an elastic member, and the connection block is slidably connected to the base.

Abstract: This application discloses power distribution equipment and a power distribution system. The power distribution equipment includes a power distribution device and a power distribution box, where the power distribution device is capable of being inserted into and removed from the power distribution box; a connection port is disposed at a first end of the power distribution device, where the connection port is used to connect a power cable or a user load line; a power connection terminal is disposed at a second end of the power distribution device, where the power connection terminal is used to plug into a busbar inside the power distribution box; and the connection port and the power connection terminal are connected inside the power distribution device. A design in which the power distribution device is capable of being inserted into and removed from the power distribution box simplifies operation and improves convenience.

Abstract: A control circuit, a control method, and a power supply device are provided. The control circuit includes an obtaining module, adapted to obtain a voltage signal from a reverse surge current when the reverse surge current appears on a primary side of a switch power circuit of a synchronous rectification circuit; a maintaining module, adapted to continuously output a first control signal in a preset first time period when the voltage signal is greater than a preset first voltage threshold; and a control module, adapted to control and switch off switch tubes of the secondary side of the switch power circuit of the synchronous rectification circuit according to the first control signal. Thus, a reverse current surge of the switch power circuit of the synchronous rectification circuit can be effectively suppressed, and the safety of a switch power supply of the synchronous rectification circuit can be effectively protected.

Abstract: A control circuit, a control method, and a power supply device are provided. The control circuit includes an obtaining sub-circuit, adapted to obtain a voltage signal from a reverse surge current when the reverse surge current appears on a primary side of a switch power circuit of a synchronous rectification circuit; a maintaining sub-circuit, adapted to continuously output a first control signal in a preset first time period when the voltage signal is greater than a preset first voltage threshold; and a control sub-circuit, adapted to control and switch off switch tubes of the secondary side of the switch power circuit of the synchronous rectification circuit according to the first control signal. Thus, a reverse current surge of the switch power circuit of the synchronous rectification circuit can be effectively suppressed, and the safety of a switch power supply of the synchronous rectification circuit can be effectively protected.

Abstract: A control circuit, a control method, and a power supply device are provided. The control circuit includes an obtaining sub-circuit, adapted to obtain a voltage signal from a reverse surge current when the reverse surge current appears on a primary side of a switch power circuit of a synchronous rectification circuit; a maintaining sub-circuit, adapted to continuously output a first control signal in a preset first time period when the voltage signal is greater than a preset first voltage threshold; and a control sub-circuit, adapted to control and switch off switch tubes of the secondary side of the switch power circuit of the synchronous rectification circuit according to the first control signal. Thus, a reverse current surge of the switch power circuit of the synchronous rectification circuit can be effectively suppressed, and the safety of a switch power supply of the synchronous rectification circuit can be effectively protected.

Abstract: A control circuit, a control method, and a power supply device are provided. The control circuit includes an obtaining module, adapted to obtain a voltage signal from a reverse surge current when the reverse surge current appears on a primary side of a switch power circuit of a synchronous rectification circuit; a maintaining module, adapted to continuously output a first control signal in a preset first time period when the voltage signal is greater than a preset first voltage threshold; and a control module, adapted to control and switch off switch tubes of the secondary side of the switch power circuit of the synchronous rectification circuit according to the first control signal. Thus, a reverse current surge of the switch power circuit of the synchronous rectification circuit can be effectively suppressed, and the safety of a switch power supply of the synchronous rectification circuit can be effectively protected.