A set of low-voltage load automatic commutation device consists of a NA-700PW commutation control terminal and several NA-700PW commutation switches. Each commutation terminal is only responsible for communicating with the commutation switch of its branch circuit, and the commutation terminal acts as the host , The commutation switch acts as a slave.

       NA-700PW The commutation control terminal is an intelligent control device that integrates sampling, calculation, communication, human-computer interaction, intelligent networking, and balance logic algorithms. It consists of three sampling current transformers, an incoming line protection miniature circuit breaker and a belt ( It is composed of the commutation execution control module of the communication function. The commutation control terminal is installed at the head end of the main line and is responsible for monitoring the real-time data of the three-phase load current, and issuing a commutation command to the commutation switch unit according to the unbalanced situation of the three-phase load.

      NA-700PW commutation switch is an operating mechanism that performs load commutation, ensuring the continuity of power supply during the commutation process. The commutation switch is installed on the user side, which can monitor the load information of its own load circuit, and perform the corresponding commutation operation according to the commutation command issued by the commutation control terminal。