An inverter device includes an inverter device body portion and a protective cover that covers the inverter device body portion, and the protective cover integrally includes a front surface portion that covers the front surface of the inverter device body portion, a top surface portion that covers the top surface of the inverter device body portion, a first side surface portion that covers a first side surface of the inverter device body portion, and a second side surface portion that covers a second side surface of the inverter device body portion.