超载限位功能型电动葫芦在工作过程中，起吊重量达到额定起重量时，超载限位装置切断起升电源，从而防止起重设备因超载而引发的恶性事故，对保证人身和设备安全有很重要的作用。超载限制器的数码显示屏（为可选件，安装在手电门上）能显示每次起吊的重量。

    During the course of work, when the load is equal to the rated lifting capacity, the overload limit equipment can cut off the power source so that vicious accidents as result of overload could be prevented. What’s more important is to protect people and equipments from danger. The digital display screen (selective part) of the overload limiter can display the load for each time.