活接在门板上的手柄连接连杆，连杆安装在断路器上，连杆中部咬合摆板，摆板下面对应销轴，销轴套上弹簧插入轴套内，用螺栓将轴套固定在弯板上，弯板固定在左侧板和右侧板上，销轴上有一凸台压在弹簧上，销轴下端对准开关柜体上的托板的小孔。具有联锁机构简单、可靠并且抽屉互换灵活等优点。

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型低压开关柜框架为组合式结构，基本骨架由C型钢材组装而成;MNS型组合式低压开关柜的每一个柜体分隔为三个室，即水平母线室(在柜后部)，抽屉小室(在柜前部)，电缆室(在柜下部或柜前右边)。

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).

操作步骤：

Operation steps:

a：在远程、就地旋纽旁边的有一小孔(右下方)，用小螺丝刀伸进小孔向下压挡板。

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：在一次关左侧有一小孔，同样用另一小螺丝刀伸进去顶开。

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：两螺丝刀同时用力解锁，打开抽屉门。

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

d：手动调整一次开关前面连杆(有时往往打不开，就是因为该处连杆卡住)断开主开关。

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：再确认主开关下方的机械连杆是否已释放到位，若没到位，活动一下即可。

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

f：旋开二次开关按钮，抽出位置

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

g：抽出抽屉，然后复位，恢复送电。

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

h：只有一次开关与二次开关啮合到位抽屉才能抽拉自如、开关才能旋转流畅。

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.