What is the voltage rating of standard plug fuses?

The voltage rating of standard plug fuses is typically 125 volts. This rating is common in household electrical systems, particularly in North America, where most residential circuits are designed for 120 volts. Plug fuses are used to protect electrical devices from overloads and short circuits, ensuring that if the current exceeds the rated limit, the fuse will blow and interrupt the circuit, thereby preventing potential damage to the appliances or electrical systems.

Each of the other voltage ratings mentioned—250 volts, 350 volts, and 500 volts—are used in specific industrial or specialized applications but are not standard for typical household plug fuses. Therefore, 125 volts is the most relevant and applicable rating for standard plug fuses in common usage.