What is the voltage limit for using plug fuses in circuits with a grounded neutral point?

The correct voltage limit for using plug fuses in circuits with a grounded neutral point is 150 volts. This specification ensures safety and compatibility within the electrical circuit. Plug fuses are designed for use in lower voltage systems, and their application to circuits over this limit could lead to the potential for overheating, circuit damage, or failure of the fuse itself.

This particular voltage limit takes into account the operational characteristics of the fuses, promoting safe overcurrent protection while maintaining proper function in household and light commercial electrical installations. Using plug fuses in circuits operating above this voltage is not recommended, as they may not effectively interrupt fault conditions, increasing the risk of electrical hazards.