Circuit breakers are divided into high voltage circuit breakers and low voltage circuit breakers according to their usage scope. The boundary between high and low voltage is relatively vague, and generally, those above 3kV are classified as high voltage electrical appliances. So how do you view the model parameters of this molded case circuit breaker? We have invited the electrical engineer from Weikewei to share today:

Low voltage circuit breaker, also known as automatic switch, is an electrical device that has both manual switching function and automatic protection against voltage loss, undervoltage, overload, and short circuit. It can be used to distribute electrical energy, start asynchronous motors infrequently, protect power lines and motors, and automatically cut off circuits when they experience serious overload, short circuit, undervoltage and other faults. Its function is equivalent to a combination of fuse type switches and over/under heat relays. Moreover, after breaking the fault current, there is generally no need to change the components, which has been widely used.Category:

According to the operation mode, there are electric operation, energy storage operation, and manual operation.

According to structure, there are universal and plastic shell types.

There are two types of usage: selective and non selective.

There are three types of arc extinguishing media: oil immersed, vacuum, and air.

According to the speed of movement, there are two types: fast type and ordinary type.

According to the number of poles, there are levels such as single level, second level, third level, and fourth level.

According to the installation method, there are plug-in, fixed, and drawer types.

High voltage circuit breakers (or high-voltage switches) are the main power control equipment in substations, with arc extinguishing characteristics. When the system is operating normally, they can cut off and connect the no-load and load currents of the lines and various electrical equipment; When the system malfunctions, it works in conjunction with relay protection to quickly cut off the fault current and prevent the expansion of the accident scope. Therefore, the quality of the high-voltage circuit breaker's operation directly affects the safe operation of the power system; There are many types of high-voltage circuit breakers, which can be divided into: oil circuit breakers (multi oil circuit breakers, low oil circuit breakers), sulfur hexafluoride circuit breakers (SF6 circuit breakers), vacuum circuit breakers, compressed air circuit breakers, etc.

The BC series high-voltage DC miniature circuit breaker is mainly used in DC systems that require disconnection and protection, such as photovoltaics and energy storage. It has a maximum rated voltage of 1000VDC and a rated current of 63A. It has a scientific arc extinguishing and current limiting mechanism, which can quickly disconnect the fault current on the DC side and ensure the reliable operation of the DC system. The product complies with EN60947-2 and AS/NZS/IEC 60947.2: 2015 standards.

Short circuit protection and overload protection

High breaking ability, reaching 6kA

Non polarized, easy to install

Rated working current up to 63A

The rated working voltage can reach 1000V

Perfectly matched with DC systems such as photovoltaics and energy storage

If you need more information to support and further communicate with the above knowledge, you can contact the electrical engineers at Weikewei, who will provide you with professional and efficient responses and sufficient communication.