Power distribution unit of smart power distribution cabinet

A power distribution unit of a smart power distribution cabinet comprises a power supply guide rail (1), a power distribution unit base (2) and a circuit breaker (3), the circuit breaker (3) being fixed on the power distribution unit base (2), the power distribution unit base (2) being fixed on the power supply guide rail (1), the circuit breaker (3) being electrically connected to the power supply guide rail (1) by means of the power distribution unit base (2); the power distribution unit base (2) comprising a built-in electric power parameter detection circuit (21) and providing a communication interface (215), is used for collecting the analog electric quantity parameter of the branch comprising the circuit breaker (3), processing the analog electric quantity parameter and then transmitting the parameter through the communication interface (215). On the basis of the power distribution unit of the smart power distribution cabinet, the connection of a power distribution circuit and the transformation, reading and transmission of the electric power parameter are realized, and the complexity of the electrical wiring of the smart power distribution cabinet is simplified; lots of manual wiring work in the production and maintenance process of the power distribution cabinet is reduced; a phase modulation device is added, and a power supply phase is freely selected; the hot plug operation is supported in the field of low voltage power distribution; the large-scale production is realized, and the reliability and stability of a power distribution cabinet product are improved.