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.

板后接線方式

Wiring mode behind the board

板后接線的特點是可以在更換或維修斷路器，不必重新接線，只須將前級電源斷開。由于該結(jié)構(gòu)特殊，產(chǎn)品出廠時已按設計要求配置了專用安裝板和安裝螺釘及接線螺釘，需要特別注意的是由于大容量斷路器接觸的可靠性將直接影響斷路器的正常使用，因此安裝時必須引起重視，嚴格按制造廠要求進行安裝。

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.

插入式接線

Plug in connection

在成套裝置的安裝板上，先安裝一個斷路器的安裝座，安裝座上6個插頭，斷路器的連接板上有6個插座。安裝座的面上有連接板或安裝座后有螺栓，安裝座預先接上電源線和負載線。使用時，將斷路器直接插進安裝座。如果斷路器壞了，只要拔出壞的，換上一只好的即可。它的更換時間比板前，板后接線要

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。因此目前我國的插入式產(chǎn)品，其殼架電流限制在400A。從而節(jié)省了維修和更換時間。插入式斷路器在安裝時應檢查斷路器的插頭是否壓緊，并應將斷路器緊固，以減少接觸電阻，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.
                      

抽屜式接線

Drawer type wiring

斷路器的進出抽屜是由搖桿順時針或逆時針轉(zhuǎn)動的，在主回路和二次回路中均采用了插入式結(jié)構(gòu)，省略了固定式所必須的隔離器，做到一機二用，提高了使用的經(jīng)濟性，同時給操作與維護帶來了很大的方便，增加了性、可靠性。特別是抽屜座的主回路觸刀座，可與NT型熔斷路器觸刀座通用，這樣在應急狀態(tài)下可直接插入熔斷器供電。結(jié)束語由于分勵脫扣器、欠電壓脫扣器，電動操作機構(gòu)和閉鎖電磁鐵具有不同的電壓等級和交流、直流不同的電源，用戶在訂貨時加以說明，同時用戶在選用時不可能用單一的附件，如需兩臺斷路器電氣聯(lián)鎖(當一臺合閘時，另一臺必須分閘)則可選用輔助觸頭和分勵脫扣器或電動操作機構(gòu)，在進行板前和板后接線時一定要把螺釘緊固，以免燒壞斷路器。

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.