活接在門板上的手柄連接連桿，連桿安裝在斷路器上，連桿中部咬合擺板，擺板下面對應銷軸，銷軸套上彈簧插入軸套內，用螺栓將軸套固定在彎板上，彎板固定在左側板和右側板上，銷軸上有一凸臺壓在彈簧上，銷軸下端對準開關柜體上的托板的小孔。具有聯鎖機構簡單、可靠并且抽屜互換靈活等優點。

The handle flexibly connected to the door plate is connected with the connecting rod, which is installed on the circuit breaker, the middle of the connecting rod engages the swing plate, the lower part of the swing plate corresponds to the pin shaft, the spring on the pin shaft sleeve is inserted into the shaft sleeve, the shaft sleeve is fixed on the bending plate with bolts, the bending plate is fixed on the left and right plates, a boss on the pin shaft is pressed on the spring, and the lower end of the pin shaft is aligned with the small hole of the support plate on the switch cabinet body. The utility model has the advantages of simple interlocking mechanism, safety and reliability, and flexible drawer exchange.

MNS型低壓開關柜框架為組合式結構，基本骨架由C型鋼材組裝而成;MNS型組合式低壓開關柜的每一個柜體分隔為三個室，即水平母線室(在柜后部)，抽屜小室(在柜前部)，電纜室(在柜下部或柜前右邊)。

The frame of MNS low-voltage switchgear is a combined structure, and the basic frame is assembled from C-type steel; Each cabinet body of MNS combined low-voltage switchgear is divided into three chambers, namely horizontal bus chamber (at the rear of the cabinet), drawer chamber (at the front of the cabinet), and cable chamber (at the lower part of the cabinet or at the right in front of the cabinet).

操作步驟：

Operation steps:

a：在遠程、就地旋紐旁邊的有一小孔(右下方)，用小螺絲刀伸進小孔向下壓擋板。

a: There is a small hole (lower right) next to the remote and local knob. Use a small screwdriver to extend into the small hole and press the baffle down.

b：在一次關左側有一小孔，同樣用另一小螺絲刀伸進去頂開。

b: There is a small hole on the left side of one-time closing. Similarly, use another small screwdriver to push it in and open it.

c：兩螺絲刀同時用力解鎖，打開抽屜門。

c: Unlock with two screwdrivers at the same time and open the drawer door.

d：手動調整一次開關前面連桿(有時往往打不開，就是因為該處連桿卡住)斷開主開關。

d: Manually adjust the connecting rod in front of the primary switch (sometimes it can not be opened because the connecting rod is stuck) to disconnect the main switch.

e：再確認主開關下方的機械連桿是否已釋放到位，若沒到位，活動一下即可。

e: Then confirm whether the mechanical connecting rod under the main switch has been released in place. If not, move it.

f：旋開二次開關按鈕，抽出位置

f: Unscrew the secondary switch button to the safe extraction position

g：抽出抽屜，然后復位，恢復送電。

g: Pull out the drawer, reset it and restore power transmission.

h：只有一次開關與二次開關嚙合到位抽屜才能抽拉自如、開關才能旋轉流暢。

h: Only when the primary switch and the secondary switch are engaged in place, the drawer can be pulled freely and the switch can rotate smoothly.