For example , a glass tube fuse rated at 32 volts would not reliably interrupt current from a voltage source of 120 or 230V .
The voltage rating of the fuse must be equal to or , greater than , what would become the open - circuit voltage .
A glass tube fuse rated at 32 volts would not reliably interrupt current from a voltage source of 120 or 230V .
The voltage rating of the fuse must be equal to or , greater than , what would become the open - circuit voltage .