Final answer:
Disconnecting means, such as switches or circuit breakers, are provided on the supply side of all fuses in circuits of overcurrents to quickly and safely interrupt the flow of electricity.
Step-by-step explanation:
Disconnecting means, such as switches or circuit breakers, are provided on the supply side of all fuses in circuits of overcurrents. These disconnecting means are used to quickly and safely interrupt the flow of electricity in case of a fault or overload in the circuit. By disconnecting the supply side, the flow of current to the fuses is cut off, preventing further damage or hazards.