Pump electrical voltage is specified in volts. Voltage is the cause of the electric current and comes in different strengths which is indicated on your pump as a volt value.
Homes in Australia normally run household appliances and motors such as pumps on 220 to 240 volts. Industry requires higher power in many instances and a higher voltage is used commonly in Australian industrial plant operations of 415 volts. When choosing a pump you need to ensure the pump can be operated with the mains voltage available in your system.