The wiring modes of low-voltage drawer cabinet circuit breaker include front board, back board, plug-in type and drawer type. If users have no special requirements, they all supply according to the front board. The front board wiring is a common wiring mode.

板后接线方式

Wiring mode behind the board

板后接线的特点是可以在更换或维修断路器，不必重新接线，只须将前级电源断开。由于该结构特殊，产品出厂时已按设计要求配置了专用安装板和安装螺钉及接线螺钉，需要特别注意的是由于大容量断路器接触的可靠性将直接影响断路器的正常使用，因此安装时必须引起重视，严格按制造厂要求进行安装。

The feature of the back board wiring is that the circuit breaker can be replaced or repaired without rewiring, and only the front power supply can be disconnected. Due to the special structure, the product has been equipped with special mounting plate, mounting screw and wiring screw according to the design requirements. It should be noted that the contact reliability of the large capacity circuit breaker will directly affect the normal use of the circuit breaker, so attention must be paid to the installation, and the installation must be carried out in strict accordance with the requirements of the manufacturer.

插入式接线

Plug in connection

在成套装置的安装板上，先安装一个断路器的安装座，安装座上6个插头，断路器的连接板上有6个插座。安装座的面上有连接板或安装座后有螺栓，安装座预先接上电源线和负载线。使用时，将断路器直接插进安装座。如果断路器坏了，只要拔出坏的，换上一只好的即可。它的更换时间比板前，板后接线要

On the installation board of the complete set of device, a circuit breaker installation base is installed first, with 6 plugs on the installation base and 6 sockets on the connecting board of the circuit breaker. There is a connecting plate on the surface of the mounting base or a bolt behind the mounting base, and the mounting base is connected with a power line and a load line in advance. When in use, insert the circuit breaker directly into the mounting base. If the circuit breaker is broken, just pull out the broken one and replace it with a good one. Its replacement time is longer than the wiring before and after the board

短，且方便。由于插、拔需要一定的人力。因此目前我国的插入式产品，其壳架电流限制在400A。从而节省了维修和更换时间。插入式断路器在安装时应检查断路器的插头是否压紧，并应将断路器紧固，以减少接触电阻，提高可靠性。

Short and convenient. Because it needs a certain amount of manpower to plug and pull. Therefore, at present, the shell current of plug-in products in China is limited to 400A. Thus, the maintenance and replacement time is saved. When installing the plug-in circuit breaker, it is necessary to check whether the plug of the circuit breaker is tightly pressed, and the circuit breaker should be securely fastened, so as to reduce the contact resistance and improve the reliability.
                      

抽屉式接线

Drawer type wiring

断路器的进出抽屉是由摇杆顺时针或逆时针转动的，在主回路和二次回路中均采用了插入式结构，省略了固定式所必须的隔离器，做到一机二用，提高了使用的经济性，同时给操作与维护带来了很大的方便，增加了性、可靠性。特别是抽屉座的主回路触刀座，可与NT型熔断路器触刀座通用，这样在应急状态下可直接插入熔断器供电。结束语由于分励脱扣器、欠电压脱扣器，电动操作机构和闭锁电磁铁具有不同的电压等级和交流、直流不同的电源，用户在订货时加以说明，同时用户在选用时不可能用单一的附件，如需两台断路器电气联锁(当一台合闸时，另一台必须分闸)则可选用辅助触头和分励脱扣器或电动操作机构，在进行板前和板后接线时一定要把螺钉紧固，以免烧坏断路器。

The in and out drawer of the circuit breaker is rotated clockwise or anticlockwise by the rocker. The plug-in structure is adopted in the main circuit and the secondary circuit, and the necessary isolator for the fixed type is omitted. One machine is used for two purposes, which improves the economy of use, brings great convenience to operation and maintenance, and increases the safety and reliability. In particular, the main circuit knife contact base of drawer base can be used in common with NT type fuse knife contact base, so that the fuse can be directly inserted for power supply in case of emergency. In conclusion, due to the different voltage levels and AC and DC power supply of shunt release, undervoltage release, electric operating mechanism and locking electromagnet, the user should explain them when ordering. At the same time, it is impossible for the user to use a single accessory when selecting. If two circuit breakers are required to be electrically interlocked (when one is closed, the other must be opened), the auxiliary contact and opening contact can be selected For the excitation release or electric operating mechanism, the screw must be tightened when wiring in front of and behind the board, so as to avoid burning the circuit breaker.