The present disclosure relates to a contactor and an operation method thereof. The contactor includes a contact, a control device, a wear indication and reset device, and a memory. The control device generates and stores wear diagnosis alarm information when the contactor is disconnected; generates a switch control signal based on the wear diagnosis alarm information when the contactor is powered on. A switch unit in the wear indication and reset device enters a wear indication state based on the switch control signal, and receives a user's operation to enter a reset state. The control device receives switch state information of the switch unit, and stores it when the contactor is disconnected. When the contactor is powered on, the control device clears the wear diagnosis alarm information based on the received switch state information being the reset state and the switch state information stored being the wear indication state.

Systems, devices, and methods including: a relay, the relay comprising: at least one contact; a reflector attached to at least one contact; a sensor, the sensor comprising: an emitter configured to emit a pulse; a detector configured to receive a portion of the emitted pulse; where the reflector may be configured to reflect at least a portion of the emitted pulse to be received by the detector when the at least one contact may be in at least one of: an open position and a closed position

A signal detecting circuit of a micro switch includes a first terminal, a second terminal, a third terminal and a micro controller. The first terminal has two ends that are respectively connected to a normally closed terminal of the micro switch and a resistor. The second terminal has two ends that are respectively connected to a normally opened terminal of the micro switch and a ground. The third terminal is connected to a common terminal of the micro switch. The micro controller has two ends that are respectively connected to the first terminal and the third terminal. When an elastic plate of the micro switch is pressed down, the common terminal is connected to the normally opened terminal. When the elastic plate of the micro switch is released, the common terminal is connected to the normally closed terminal.

A remote-controlled mechanism according to an embodiment is used for coupling to a protective switching device to use a controllable drive device of the remote-controlled mechanism to actuate the coupled protective switching device. To this end, the remote-controlled mechanism includes: an actuating element operatively connectable to an actuating element of the coupled protective switching device and actuatable either by a remotely controllable drive device of the remote-controlled mechanism or manually; one or more sensor devices for capturing position data relating to a position of the actuating element of the remote-controlled mechanism; and a controller for evaluating the captured position data and for controlling the drive device via control commands. The controller is designed to disable the drive device upon an evaluation of the position data and/or of the control commands revealing that the actuating element of the remote-controlled mechanism has been switched off manually.

A monitored switch gear device that includes a switch gear, a plurality of magnets, a magnetic field sensor and a processing circuitry. The switch gear includes an opening/closing mechanism adapted to selectively open and close an electrical circuit. The opening/closing mechanism includes a pivotally mounted shaft configured to rotate about a pivot axis as the opening/closing mechanism moves between an open and a closed state. The magnets of the plurality of magnets are spaced from each other and fixedly attached to the shaft. The magnetic field sensor senses a magnetic field generated by each magnet of the plurality of magnets as the shaft pivots. Each magnet of the plurality of magnets defines a different angular position of the shaft detected by the magnetic field sensor in which the magnetic field sensor senses a respective magnet of the plurality of magnets. The processing circuitry computes a first angular speed of the shaft based on signals provided by the magnetic field sensor when it senses the magnetic field generated by at least two magnets of the plurality of magnets as the shaft pivots in one direction.

The disclosure relates to an auxiliary module for an electrical switching device including an input, an output, a first housing and a switching module which is configured to switch between a first configuration in which the switching module allows a current to flow between the input and the output and a second configuration in which the switching module blocks the current, the first housing defining a chamber which accommodates the switching module and defining a space for receiving the auxiliary module, the space containing a signalling member configured to transmit information relating to a state of the electrical switching device to the auxiliary module when the auxiliary module is in the space. This auxiliary module comprises a controller configured to generate a message and a radiofrequency communication module configured to transmit the message, via a radiofrequency data link, to a remote device.

An electronic circuit breaker provides waveform data wirelessly and alters a breaker code wirelessly. The breaker comprises a transceiver to wirelessly transmit information including waveform data, a microcontroller including a processor and a memory and computer-readable firmware code stored in the memory which, when executed by the processor, causes the microcontroller to: monitor in real-time breaker functional parameters to determine parametric modifications, wirelessly transmit the information that was saved previously in the electronic circuit breaker about the one or more breaker functional parameters to a remote device with a graphical user interface, alter a breaker algorithm after analyzing load data of problematic electrical loads in a mobile application (APP) of the remote device to treat the problematic electrical loads as normal and safe and test the computer-readable firmware code with a problematic electrical load to make sure the electronic circuit breaker doesn't still trip on the problematic electrical load.

A switch detection circuit includes a controller, a first DC isolation module, a second DC isolation module, and a signal conditioning module connected to the controller. The controller is connected to a first end of an external switch via the first DC isolation module and the signal conditioning module is connected to a second end of the external switch via the second DC isolation module. The controller is configured to output a pulse signal, and transmit the pulse signal to the second DC isolation module via the first DC isolation module and the external switch. As a current flowing out from the second DC isolation module, the signal conditioning module outputs a feedback signal to the controller and the controller counts according to the feedback signal and detects the working state of the external switch according to the count value.

An indicating device for a dual power automatic transfer switch, which includes a first driving part connected to a first moving contact of a first power supply and a second driving part connected to a second moving contact of a second power supply; the indicating device includes a mechanical indicating device, an electrical indicating device and an indicating part acting on the mechanical indicating device and the electrical indicating device; the first and the second driving part respectively drive the indicating part to move; the electric indicating device at least includes a first and second switching device; the first switching device at least includes a first contact of the first switching device and a second contact of the first switching device which are connected in parallel; the second switching device at least includes a first contact and a second contact of the second switching device which are connected in parallel.

A sensor system for measuring an angle of a gate of an isolating switch of overhead lines, comprising an optical fiber angle sensor, a base, a support plate, a light source fiber, a laser transmitter, an aluminum box, a relay, a step-down power module, a control circuit board, a photoelectric converter, and a receiving optical fiber. The support plate is arranged on an upper part of a pillar insulator; the optical fiber angle sensor is arranged on the base to detect a rotation angle of the gate; the laser transmitter is controlled to emit a laser beam into the light source fiber; the laser beam is received by the receiving optical fiber and transmitted to the photoelectric converter to convert a light intensity into a voltage signal; the converted voltage signal is transmitted to the control circuit board for processing, and the angle of the gate is output.