What is MCB and ELCB, and what are their differences and functions?


What is the difference between using ELCB or MCB for electrical installations protection at our home?

MCB and ELCB
Maybe, for most people who are not very familiar with the electrical safety device called the ELCB, people are mostly more familiar with electric safety devices called MCBs, rather than ELCBs.

What is MCB and ELCB, and what are their differences and functions?

difference of mcb and elcb
Which one better MCB or ELCB?
As we know, that needed a safety device at every electrical installation at our home.
Electric safety devices are installed to protect us and various electrical equipment from various damage or other hazard risks, An electric safety device installed serves to secure electrical installations when there are various disturbances.

Various disturbances that can occur in electrical installations, including:
  • Over-load.
  • A surge in electrical current caused by shorting cables, or commonly referred to as short circuits.
  • The occurrence of an electric leak, either an electrical leak that comes from a chipped electric cable, or a damp or damaged electrical appliance. (Electricity shock is defined as the occurrence of an electric leak through parts of our body to earth)
  • Electric leaks that come from touching a power source to other objects, such as when we are electrocuted, wires are bitten by mice, wires are peeled off and hit the roof / zinc, and so on.
  • Various electrical disturbances are certainly very dangerous, because it can cause sparks and fires, and can endanger human safety.

Then what is needed to provide protection when there are various electrical disturbances?

To provide protection for electrical installations, a safety device is usually installed called the MCB.

Does installing the MCB in electrical installations provide protection from various disturbances above?

MCB is not enough to secure us or electrical appliances from various risks and electricity disruptions.

What is mean of MCB?
MCB (Miniature Circuit Breaker), is an electrical safety device that serves to disconnect electricity when Over-current occurs, which is caused by excessive electricity consumption, due to lightning strikes, or due to short circuit (Short circuit), MCB only functions to secure when there is a surge that exceeds the MCB size limit installed, and MCB cannot protect us when electrocuted.

However, when there is an electric leak or when we are touched (electrocuted), MCB cannot provide protection, because of the surge in current when we are electrocuted (Electrum) the value is very small.

Then what is electric safety devices should we install on electrical installations, to provide protection when we are electrocuted?

Electrical safety device that we needed to protect us from the danger of being stung or electrocuted, is the ELCB.
ELCB protecting us from the danger of being stung or Electrocuted

What is mean of ELCB?
ELCB (Earth Leakage Circuit Breaker) is an electrical safety device from the risk of electric leakage, the value of the leakage current is very small. Besides that, the ELCB can also function as an electric safety when an electric leak occurs with a large enough surge, and can protect when there is overcurrent due to short circuit (Short Circuit).

So, ELCB is an electrical safety device, that can provide protection from various danger and disturbances that we mentioned above, ELCB has several terms, such as RCD, RCCB, GFCI, and so on.

Is it better to use MCB or ELCB?

Of course it is better to use the ELCB, because it can provide protection from various electrical disturbances and hazards, including to protect human safety when electrocuted or electrocuted.
Make sure the ELCB has maximal sensitivity 30mA

What is the difference between MCB and ELCB?
Some differences between the MCB and the ELCB include:

MCB
  • The MCB is only installed for one cable, the phase cable.
  • MCB only functions to secure electricity when there is overcurrent due to excess use of electrical appliances, or because of a surge in current when there is a short circuit.
  • MCB can provide protection when there is an electric leak with a surge that exceeds the current capability of the MCB, provided that the electrical installation must be equipped with good grounding. why does earth have to be attached to the ground?
  • If the ARDE is not installed properly, the MCB cannot provide protection when a leakage current occurs.
  • The MCB cannot protect human safety when exposed to electric shock (electrocution), and also the MCB cannot protect when an electric leak occurs with a low / small leakage current.

ELCB
  • ELCB is installed with two cables, namely, phase and neutral cables. The phase and neutral cables from the power source must pass through the ELCB before being delivered to the electrical installation at home.
  • ELCB can provide protection against various electrical disturbances, such as:
  • Current surge that exceeds the current limit of the ELCB
  • Protects when there is an electric leak with a small leakage current and a large leakage current
  • Protect us from the danger of electrocution
  • Provides protection when a surge occurs due to a leak, or a short circuit (short circuit). The working principle of the ELCB


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