Q:Circuit breaker and fuse in the role of what in common

In common: both are circuit protection appliances, used to achieve the overload and short circuit protection of the circuit breaker.

Q:What is the fuse often used?

General fuse consists of three parts: First, the melt part, it is the core of the fuse,

Q:What is the melt of the fuse?

The melting rate of the hot inertia melt is between the above, and is generally a melt made of zinc as the main material

Q:What is a closed fuse:

Fill the fuse with a general square tube, built-in quartz sand and melt, breaking capacity,

Q:What is the role of thermal fuse

When the metal sheet after overheating occurs, the contact is disengaged and the circuit is disconnected. After the temperature is reduced, the metal sheet is restored and the circuit is combined.

Q:Why can not the electric faucet be used to reset the fuse automatically?

Professional manufacturers and people know: If you can automatically reset the fuse, the equivalent of only play a role in over-temperature protection and the actual elimination of anti-dry protection

Q:The main parameters of the fuse selection

The fuse must be able to break the fault circuit without breaking the surrounding circuit.

Q:Fuse always burn Is the line short circuit yet?

the insurance has not been burned, indicating that all electrical work is normal no problem, while the use of electrical insurance It will burn, indicating that beyond the load, you can properly replace the fuse.

Q:When using low-voltage fuses, note that

single-phase line should be installed on the neutral line fuse; in the three-phase four-wire loop on the neutral line, the use of zero protection on the zero line is strictly prohibited fuses;

Q:Why not tighten the fuse more easily blown

Because there is no pressure to make the fuse at one end and the terminal contact at the first solution, great harm.