what is current limited type circuit breakers?

Answer 1

a safety device which switches off the power if too many amps are being drawn. The other type, ELCB, or Earch - leakage - circuit - breaker, cuts the power if there is a leakage to earth.

Answer 2

Most "standard" circuit breakers are for limiting the current flow.
The term breaker means it breaks open the circuit.
In typical home type circuit breakers, there are requirments that are different if the current is a small amount over the rating verses a large current rush usually seen by a short that draws the maximum current that can run through the supply and the wire resistance.
This is important because if you have a 15 ampere circuit and you put too many devices on it, you want to limit the current so the wires do not over heat. If the current you draw is only about 17 to 18 amperes, the breaker works in a thermal mode with a bi-metalic strip that heats and snaps the breaker. By the way, in standard US home wiring with copper conductors, a 15 ampere circuit on 14 AWG cable can carry 40 amperes for hours without melting the cable.

The 17 to 18 amperes may cause the breaker to open in about 2 minutes.

If the current is a little higher such as 19 to 20 amperes, the breaker may open in 20 seconds.
There is a scale of current and time required by UL.

Now for the high current rush.
There is a second part of the breaker that is magnetic.
With a large current flow, the magnet snaps the breaker open within milli-seconds.

Answer 3

Hi. A device that uses the current flowing through it to magnetically pull the switch open, stopping the flow of electricity.