Cartridge fuses are used on circuits with voltage ratings up to how many volts?

Cartridge fuses are designed to protect electrical circuits from overloads and short circuits, making them an essential component in various applications. For general circuit protection, cartridge fuses are rated for voltage applications up to 600 volts. This rating is significant because it ensures that the fuse can safely interrupt the circuit in case of a fault, without the risk of catastrophic failure.

The 600-volt rating allows cartridge fuses to be utilized in many standard industrial and commercial electrical systems, which often operate at voltages of 120/240 volts or even up to 480 volts. The design of these fuses allows them to handle high fault currents safely, ensuring that the electrical system remains intact and safe for use.

The higher ratings (like 800 volts mentioned in another option) typically require specific types of fuse designs or constructions to ensure safety and effectiveness, which are beyond the typical usage of standard cartridge fuses. Therefore, the suitability of cartridge fuses ceases effectively at the 600-volt threshold for general application, making it the correct answer to the question.