What are the standard voltage ratings for cartridge fuses?

The standard voltage ratings for cartridge fuses are primarily 250 and 600 volts. This is because cartridge fuses are designed to protect electrical circuits by disconnecting the circuit in the event of an overcurrent condition. The voltage ratings indicate the maximum voltage that the fuse can safely interrupt without arcing or causing damage to the electrical system.

Cartridge fuses rated at 250 volts are commonly used in lower voltage applications, while those rated at 600 volts are suitable for higher voltage systems found in industries and commercial settings. This differentiation is critical in ensuring that the fuse operates correctly within its specified voltage range, providing safety and reliability in protecting electrical circuits.

Other voltage ranges mentioned in the other choices, such as 100 and 200 volts or 120 and 240 volts, do not align with standard ratings for cartridge fuses. Instead, those voltages are more typical for specific applications or types of equipment rather than representing the general ratings for cartridge fuses. Furthermore, while 480 volts is a common industrial voltage, it falls within the broader classifications covered by the 600-volt rating, which provides more comprehensive coverage for various high-power systems.