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KORLEN MCB

November 23, 2018

The main function of the Circuit Breaker is that when a person experiences a leakage or an electric shock, the circuit breaker device will immediately cut off the power supply to protect people's safety and prevent electric shock accidents. In addition, there are some Leakage Circuit Breaker wiring diagrams, and some other devices are also provided so that the leakage circuit breakers have both short-circuit and overload functions. Next Xiaobian introduced circuit breaker working principle and circuit breaker features for everyone.

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Circuit breaker working principle

The working principle of the circuit breaker is that when a short circuit occurs, a magnetic field generated by a large current overcomes the reaction force spring, and the tripping device pulls the action of the operating mechanism and the switch trips instantaneously. When overloaded, the current increases and the heat is increased. The bimetal deforms to a certain degree and pushes the mechanism. The greater the current, the shorter the operating time. The circuit breaker is of the electronic type, and transformers are used to collect the current of each phase. Compared with the set value, the microprocessor sends a signal when the current is abnormal, and the electronic trip unit drives the operating mechanism.

Circuit Breaker Features

1. The use of funnel type combination type terminal block makes the connection simple and reliable; it can be easily connected to the busbar busbar, and the terminal capacity for incoming or outgoing line can reach 35mm2 through the additional connection terminal.

2, the contact system uses silver alloy material (silver tin or silver graphite), truly no welding.

3. The rapid arc extinguishing system is composed of moving contact locking pieces, arc-guiding plates, magnetic blowing metal plates and metal arc extinguishing grid plates. There are up to 13 metal grids in the arc chamber, which can quickly extinguish the arc. The average short-circuit breaking time is only 0.0037 seconds.

4. The energy limit level is higher than 3 (the energy value is only 50% of level 3).

5, selective protection and good protection. With the superior fuses, molded case circuit breakers and other products to form a good selective protection.

6. The circuit breakers can meet the standards of IEC898 and the breaking capacity can be up to 10KA (if used for industrial IEC947-2 up to 25KA

7, circuit breaker tripping characteristics of A, B, C, D four, the rated current range from 0.3-125A. Can be applied to a variety of different uses.

8, the shell of the circuit breaker is made of thermosetting material, with high heat resistance and impact strength, high dielectric strength.

9. The appearance of the circuit breaker is a standard modular structure, which is small in size and light in weight. The mounting parts are made of sheet metal and springs, which can be securely and securely mounted on a standard 35mm rail.

10, the circuit breaker can be connected with a variety of accessories, such as locking device for locking the handle, it can prevent unrelated personnel to operate the circuit breaker, in addition to auxiliary switches, fault alarm switch, shunt release, undervoltage tripping And other accessories to choose from.

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The function of the circuit breaker

1, control role. That is, depending on operational requirements, some of the power equipment or lines are put into or removed.

2, protection. That is, when a power device or a line fails, a relay and an automatic device act on the circuit breaker to rapidly remove the fault from the power grid to ensure normal operation of the non-failure portion of the power grid.

Editor's summary: The working principle of the circuit breaker and the characteristics of the circuit breaker are introduced here. I hope to help everyone. If you want to know more about yourself, you can follow the information on this site.

Circuit Breaker Magnetic Circuit Breaker Home Circuit Breaker Circuit Breaker Working Principle

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