The selection of circuit breakers should be based on specific usage conditions and select the category of use, rated working voltage, rated current, and the set current of the trip unit, etc. Refer to the protection characteristics curves provided by the product samples for selecting the protection characteristics, and it is necessary to verify the … Read more
The DC system of the substation provides power for relay protection, automatic safety devices, control signal circuits, emergency lighting, etc. This is the basic guarantee for the correct operation of relay protection, automatic devices, and circuit breakers. Currently, circuit breakers and fuses are the main protection devices widely used in the substation DC system. When … Read more
Miniature Circuit Breakers (MCB) are the most common switches in control circuits, primarily serving two functions: to switch circuits on and off and to protect circuits by tripping in the event of overcurrent or short circuits. DC Miniature Circuit Breakers (DC MCB) are a special category within miniature circuit breakers. They employ specialized arc extinguishing and … Read more
When diving into the world of solar energy, the photovoltaic DC combiner box stands out as a pivotal component. Acting as the heart of the photovoltaic array, it’s the power source for the entire photovoltaic station. The components within this box play a crucial role in its efficiency and reliability. So, how do you make … Read more
As for MCBs, 1P+N, 1P, 2P are generally used as the control for single-phase electrical appliances. (1) Differences: 1P—Single-pole circuit breaker: Has thermal trip function, can only control live wire (phase wire), module size 18mm; 1P+N—Single-pole + N circuit breaker: Controls both live and neutral wires, but only the live wire has the thermal trip … Read more