Q:Fuse letter of the fuse

GR (DIN VDE / IEC) full range of semiconductor protection

Q:What parts are the fuses divided

Melt material has a relatively low melting point, stable characteristics, easy to fuse characteristics. Generally use lead-tin alloy, silver-plated copper, zinc, silver and other metals.

Q:Why can not change the fuse when replacing the fuse

Fuse is to limit the current to ensure that the meter does not burn

Q:Fuses are generally not overloaded.

Short-circuit protection refers to the ability to quickly cut off the load circuit at high currents.

Q:When selecting a fuse, you must consider several elements

The rated current of the fuse is confirmed at room temperature of 25 degrees, and the ambient temperature has a great impact on the rated current of the fuse. When the ambient temperature is higher than 25 degrees, the rated current value of the fuse will be attenuated, Below 25 degrees, the rated current value will be "added value"

Q:What is the self-recovery fuse:

Since the fuse can only limit the short circuit current, can not really break the circuit. The advantage is that you do not have to change the melt and can reuse it.

Q:Fuses can be divided into high-voltage fuses and low-voltage fuses.

the protection of the voltage transformer fuse, the protection of the power capacitor fuses, protect the semiconductor components of the fuse,

Q:The fuse is to prevent the circuit

The current is too large lead to accidents (for example, the circuit somewhere short circuit or the total power of the circuit caused by excessive current is too large)

Q:Why can not the neutral line fuse

and directly to the end of the load zero line does not require no insurance, at least two knife knife switch can be installed on the zero line insurance.

Q:Why is the fuse broken

The fuse value of the fuse is above the rated current