Circuit breaker is a kind of mechanical switching apparatus which can connect, carry and break the current under normal circuit conditions, and can also connect, carry and break the current for a certain time under specified abnormal circuit conditions. So, how to install the MCB?

1）斷路器的安裝應符合GB13955-92標準及產品說明書的要求。

1) The installation of circuit breaker shall meet the requirements of GB 13955-92 standard and product manual.

2）斷路器的安裝應充分考慮供電線路、供電方式、供電電壓及系統接地型式。

2) The installation of circuit breaker shall fully consider the power supply line, power supply mode, power supply voltage and system grounding type.

3）斷路器的額定電壓、額定電流、短路分斷能力、分斷時間應滿足被保護供電線路和電氣設備的要求。

3) The rated voltage, rated current, short-circuit breaking capacity and breaking time of the circuit breaker shall meet the requirements of the protected power supply line and electrical equipment.

4）斷路器的安裝接線應正確，在不同的系統接地形式的單相、三相三線、三相四線供電系統中剩余電流保護器的接線不同，應給以充分注意。

4) The installation and wiring of the circuit breaker should be correct. In the single-phase, three-phase three wire, three-phase four wire power supply systems with different system grounding forms, the wiring of the residual current protector is different, which should be given full attention.

以上就是微型斷路器設計要點有哪些以及微型斷路器如何施工安裝的全部內容了，小型斷路器是指安裝在終端配電線路的保護電器，主要用于線路和電器設備的過載和短路保護。在國民生產生活用電需求不斷加大，社會對供電安 全性、可靠性提出較高要求的情況下，需要優化配網運行效果。

The above is the design points of miniature circuit breaker and the construction and installation of miniature circuit breaker. Miniature circuit breaker refers to the protective electrical equipment installed in the terminal distribution line, which is mainly used for overload and short circuit protection of lines and electrical equipment. With the increasing demand for electricity for national production and living, the society puts forward higher requirements for the safety and reliability of power supply, so it is necessary to optimize the operation effect of distribution network.