Abstract: The invention relates to a remotely-controllable circuit breaker, including a first circuit breaking unit, remote control unit, and housing. The first circuit breaking unit and the remote control unit are disposed in the housing; the first circuit breaking unit operates to switch on or off loads and electric lines; the remote control unit operates to control the interruption of the remotely-controllable circuit breaker via a remote control signal; and the housing is made of insulating and flame-retardant materials.

Abstract: A circuit breaker with a time-delay function, including a first circuit breaking unit, a remote control unit comprising a time-delay control circuit, and a housing. The first circuit breaking unit and the remote control unit are disposed in the housing, the first circuit breaking unit operates to switch on or off loads and electric lines, the remote control unit operates to control interruption of the circuit breaker with a time-delay function via a remote control signal, the time-delay control circuit operates to implement time delay after the remote control unit receives the remote control signal and before the first circuit breaking unit switches on or off the loads and the electric lines, and the housing is made of insulating and flame-retardant materials.

Abstract: A voltage and current sampling device, including a box, a current transformer, and a voltage acquisition unit, including a voltage collection sub-unit, and a voltage/frequency conversion sub-unit. The current transformer is disposed in the box. A phase line passes through the center of the current transformer. The current transformer outputs a current signal via a current signal output end. The voltage collection sub-unit is disposed on the phase line whereby acquiring a real-time voltage signal and converting the real-time voltage signal into a first voltage sampling signal. The voltage/frequency conversion sub-unit is connected to the voltage collection sub-unit whereby converting the first voltage sampling signal into a first frequency signal.

Abstract: The invention relates to a remotely-controllable circuit breaker, including a first circuit breaking unit, remote control unit, and housing. The first circuit breaking unit and the remote control unit are disposed in the housing; the first circuit breaking unit operates to switch on or off loads and electric lines; the remote control unit operates to control the interruption of the remotely-controllable circuit breaker via a remote control signal; and the housing is made of insulating and flame-retardant materials.

Abstract: A circuit breaker with a time-delay function, including a first circuit breaking unit, a remote control unit comprising a time-delay control circuit, and a housing. The first circuit breaking unit and the remote control unit are disposed in the housing, the first circuit breaking unit operates to switch on or off loads and electric lines, the remote control unit operates to control interruption of the circuit breaker with a time-delay function via a remote control signal, the time-delay control circuit operates to implement time delay after the remote control unit receives the remote control signal and before the first circuit breaking unit switches on or off the loads and the electric lines, and the housing is made of insulating and flame-retardant materials.

Abstract: A circuit breaker with a secondary protection function, comprising a first circuit breaking unit, a second circuit breaking unit, and a housing. The first circuit breaking unit and the second circuit breaking unit are disposed in the housing, the first circuit breaking unit operates to switch on or off loads from electric lines, the second circuit breaking unit operates to disconnect the loads from the electric lines as the first circuit breaking unit fails, and the housing is made of insulating and flame-retardant materials.

Abstract: A modular energy meter, containing at least a power line access module, the power line access module containing at least a phase line access portion having an input end and an output end, and a zero line access portion having an input end and an output end, and at least one modular energy metering device each having a phase line input end, a zero line input end, and a phase line output end. The input end of the phase line access portion is connected to a phase line of a power line. The input end of the zero line access portion is connected to a zero line of the power line. The modular energy metering device operates to measure energy values output from a phase line output end and a zero line output end of the power line. The output end of the phase line access portion is connected to the phase line input end of the modular energy metering device. The phase line output end of the modular energy metering device is connected to a phase line output line.

Abstract: A modular energy meter, containing at least a power line access module, the power line access module containing at least a phase line access portion having an input end and an output end, and a zero line access portion having an input end and an output end, and at least one modular energy metering device each having a phase line input end, a zero line input end, and a phase line output end. The input end of the phase line access portion is connected to a phase line of a power line. The input end of the zero line access portion is connected to a zero line of the power line. The modular energy metering device operates to measure energy values output from a phase line output end and a zero line output end of the power line. The output end of the phase line access portion is connected to the phase line input end of the modular energy metering device. The phase line output end of the modular energy metering device is connected to a phase line output line.