WITM1E Series Intelligent Measuring Switch(hereinafter referred to as the circuit breaker) is the new-type low-voltage switch device with an integration of high-precision current sensor,measuring unit,and protection unit. It has strong data processing & communication capacities,as well as high-precision sampling capacity,with miniaturized power carrier module,local RS485 and carrier communication interface,able to be used with the regional intelligent integration terminal and support the deepening application of the regional distribution loT in new power system scenarios. The product is widely used in the low-voltage power grid(AC 50Hz,Rated Insulation Voltage 1,000v,Rated Current:100A~630A,Rated Operating Voltage 400v and below).