3AG 125-R

Fuses

Fuses are an essential part of modern electrical systems, and allow a device to be overloaded without causing permanent damage. The 3AG 125-R is a common type of fuse, widely used in both industrial and domestic applications.

Applications

The 3AG 125-R is a popular choice for low voltage power circuits. It is rated at 125 volts AC or 250 volts DC and is capable of handling up to 30 amps. The fuse is typically used in applications such as lighting, motor control, and other mechanical systems.

The 3AG 125-R is also commonly found in domestic applications, including kitchen appliances, ventilation systems, and television sets. It is suitable for use with low power systems where external loads do not exceed 30 amps.

Working Principle

A fuse operates by stopping the flow of electricity when too much current is present, and preventing damage from occurring. The 3AG 125-R works in the same way as other fuses, by interrupting the current when the electrical load exceeds its rated capacity.

The 3AG 125-R fuse is a thermal type, meaning that it has an internal bi-metallic strip that will expand when heated. This heat is produced when the internal current exceeds its rated value, causing the strip to expand and break the circuit.

When the 3AG 125-R has tripped, the bi-metallic strip is re-set by either manually resetting the fuse or replacing it entirely. It is important to never exceed the rated current value, or the fuse may not be able to protect the electrical system.

Conclusion

The 3AG 125-R is a commonly used type of fuse, suitable for low voltage power circuits. It is rated at 125 volts AC or 250 volts DC and can handle up to 30 amps. The fuse works by interrupting the current when the electrical load exceeds its rated capacity, and the bi-metallic strip can be easily reset when the fuse trips.