The invention discloses a single bus system convenient to operate. The single bus system convenient to operate comprises a shell, wherein a bus chamber is arranged in an inner cavity of the shell, a three-position isolation switch is arranged in the bus chamber, a bus connector is arranged at the top of the three-position isolation switch, a press release disc is arranged at the top of the bus chamber, a pressure release passage is arranged at the top of the pressure release disc, a circuit breaker chamber is arranged at the bottom of the bus chamber, a circuit breaker is arranged in the circuit breaker chamber, a cable socket is arranged at the bottom of the circuit breaker, and a casting current transformer is arranged at one side of the cable socket. By arranging the pressure release passage, pressure can be released and gas can be discharged when a fault arc occurs in the circuit breaker or a bus, so that the safety of an operator and a switch cabinet is ensured; by arranging the casting current transformer, the single bus system can be used for current conversion and electrical isolation; by arranging universal wheels, equipment can be convenient to move; and by forming heat dissipation holes, the heat dissipation efficiency of the equipment can be improved.