雙電源配電箱是按照電氣接線的要求將開關設備、測量儀表、保護電器和輔助設備，組裝在封閉或是半封閉的金屬柜中或者屏幅上，構成雙電源配電箱。在正常運行的時候可以借助手動或是自動開關接通/分斷電路。在發生故障的時候或是在不正常運行的時候，借助保護電器切斷電路或是報警。借助測量儀表能夠顯示運行中的各種參數，還可以對某些電氣參數進行調整，對正在或是已經偏離正常工作狀態的時候進行提示或發出信號。

The dual power distribution box is composed of switch equipment, measuring instrument, protective appliance and auxiliary equipment according to the requirements of electrical wiring, which are assembled in closed or semi closed metal cabinet or on the screen, and form a double power distribution box. During normal operation, the circuit can be switched on or broken by manual or automatic switch. In case of malfunction or abnormal operation, cut off the circuit or alarm by means of protective device. The instruments can display various parameters in the operation, and some electrical parameters can be adjusted to prompt or signal when they are already deviating from the normal working state.