11results about "Switch operated by excess currents" patented technology

The invention relates to a circuit breaker for an electrical circuit. The circuit breaker (100) is arranged between a power supply (302) and a load (304), wherein the circuit breaker (100) comprises control means (104) configured to switch switching means (106) of the circuit breaker (100) between an ON-mode in which a current i is fed to the load (304), and an OFF- mode in which no current is fed to the load (304); wherein the control means (104) is configured to obtain a value of the current i fed to the load (304) when the switching means (106) is in the ON-mode; keep the switching means (106) in the ON-mode if the value of the current i is smaller than a switching current is of the circuit breaker (100); switch the switching means (106) into the OFF-mode if the value of the current i is larger than the switching current is of the circuit breaker (100); and switch the switching means (106) from the OFF-mode back into the ON-mode after a first time interval Furthermore, the invention also relates to a circuit and a method.

The invention relates to a circuit breaker for an electrical circuit. The circuit breaker (100) is arranged between a power supply (302) and a load (304), wherein the circuit breaker (100) comprises control means (104) configured to switch switching means (106) of the circuit breaker (100) between an ON-mode in which a current i is fed to the load (304), and an OFF-mode in which no current is fed to the load (304); wherein the control means (104) is configured to obtain a value of the current i fed to the load (304) when the switching means (106) is in the ON-mode; keep the switching means (106) in the ON-mode if the value of the current i is smaller than a switching current iS of the circuit breaker (100); switch the switching means (106) into the OFF-mode if the value of the current i is larger than the switching current iS of the circuit breaker (100); and switch the switching means (106) from the OFF-mode back into the ON-mode after a first time interval T1. Furthermore, the invention also relates to a circuit and a method.

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 invention relates to a circuit breaker for an electrical circuit. The circuit breaker (100) is arranged between a power supply (302) and a load (304) and comprising a first circuit breaker (102) coupled in series with a second circuit breaker (112), wherein the circuit breaker (100) comprises control means (104) configured to switch switching means (106) of the first circuit breaker (102) between an ON-mode in which a current i is fed to the load (304), and an OFF- mode in which no current is fed to the load (304); wherein the control means (104) is configured to obtain a value of the current i fed to the load (304); switch the switching means (106) into the OFF-mode within a switching time of the first circuit breaker (102) if the value of the current i is larger than a switching current is of the first circuit breaker (102), wherein the switching time of the first circuit breaker (102) is less than a switching time of the second circuit breaker (112); and switch the switching means (106) from the OFF-mode back into the ON-mode after a first time interval Furthermore, the invention also relates to a circuit and a method.

Disclosed is a low-voltage switching device. The low-voltage switching device includes an operating mechanism, a differential system and a compensating mechanism, wherein the compensating mechanism includes a support, as well as a lever and a cam rotationally assembled on the support; a sliding block which is connected to the lever and the cam respectively is assembled on the support; and a compensating tab which cooperates with the lever and the differential system respectively is disposed on the sliding block. The differential system rotates by pushing the compensating tab, such that the lever rotates to trigger the operating mechanism to trip. An adjusting screw is disposed between the cam and the sliding block. The sliding block drives the compensating tab to move by rotating the cam or the adjusting screw so as to adjust a distance between the compensating tab and the lever. According to the low-voltage switching device of the present invention, the sliding block, the cam and the lever of the compensating mechanism cooperate with one another, and the sliding block is adjusted by the adjusting screw or the cam to indirectly adjust the distance between the compensating tab and the lever, so that the whole compensating mechanism is more compact in structure, and is capable of completing compensation adjustment only in a small space.