DIFFERENCE BETWEEN MCB,MCCB, ELCB AND RCCB.

An electrical circuit breaker is a type of switching device that can be automatically and manually activated to control and protect the electrical power system, respectively. As current power systems work with large currents, special instructions should be given during circuit breaker design to break the arc produced during the circuit breaker process. This was the basic definition of circuit breakers. These are grouped into different types, which are further divided into specific categories.

Difference between MCB and MCCB, ELCB, RCCB

Different circuit breakers and differences between MCB and MCCB, ELCB and RCCB are discussed below.

MCB-Miniature Circuit Breaker
MCB is an electromechanical device that protects electrical circuits from over current, which can be affected by short circuit, overload or incomplete design. This is a better option for the fuse because once the load is identified, it does not require an alternative. MCBs can be easily rearranged and thus provide better operational protection and greater handiness without having to spend huge operating costs. MCB’s operating operating principle is simple.

MCB function by interrupting the stability of the electrical current through the circuit once the error is detected. In simplest cases this circuit breaker is a switch that regularly closes while passing through the current and passing the maximum allowable limit. Generally, these are designed to protect against current and excessive heat.
MCB is rapidly replacing reusable switch-fuse units for low-power domestic and industrial applications. In the wiring system, the MCB is a combination of all three functions such as short circuit protection, overload and switching. Overload protection using bimetallic bar and short circuit protection by used solenoid.

These are available in different pole versions such as single, double, triple pole and four poles with neutral pole if needed. The typical current rating is in the range of 0.5-63A, at a voltage level of 230 or 440V, with the ability to break short circuits with a symmetry of 3-10 kA.
Characteristics of MCB
The characteristics of the MCB mainly include the following 

• Rated current does not exceed 100 amperes
• Generally, the trip characteristics are not adjustable
• Thermal / thermal magnetic operation

MCCB-Molded Case Circuit Breaker

MCCB is used to control electric energy in N / K distribution and has short circuit and overload protection. This circuit breaker is an electromechanical device that protects the circuit from short circuit and over current. They offer short circuit and over current protection for circuits from Auits Amps to 3000 Amps. The primary functions of the MCCB are to open the circuit manually, meaning to open the circuit circuit or to automatically open the circuit under overload conditions. In electrical circuits, over current can result in faulty design.

The MCCB is an alternative to the fuse as it does not require an alternate once the overload is recorded. Unlike fuses, this circuit breaker can be easily rearranged after a fault and provides operator safety and ease of operation without receiving operating costs. Generally, these circuits have a thermal current for over current and a magnetic element works quickly for short circuit releases.

Characteristics of MCCB
Characteristics of the MCCB mainly include the following

• A range of up to 1000 amperes of rated current
• Trip currents may be adjusted
• Thermal / thermal magnetic operation

ELCB – Earth leakage circuit breaker

ELCB is used to protect the circuit from electrical leakage. When an electric shock occurs, this circuit breaker cuts off power by 0.1 seconds to protect personal safety and to avoid gear from the circuit against short circuit and overload.

ELCB is a security device that is used in electrical systems along with Earth’s earth barriers to prevent shocks. It takes note of the small stray voltage on the metal fields of the electrical gear, and if an insecure voltage is detected the circuit is interrupted. The main principle of earth leakage protection is to prevent injuries to humans and nature due to electric shock.

This circuit breaker is a special type of ling ching relay in which the incoming incoming mains power is connected through its switching contacts so that the circuit breaker disconnects the power supply in an unsafe state.

ELCB It notes fault flows from the live to ground wire within the installation that it is protected. If the voltage breaks out enough to the sensing coil in the circuit breaker, it will shut off the supply, and remain off until reset by hand. The voltage-sensing earth leakage circuit breaker does not detect fault current in any other ground body.

Characteristics of ELCBs
Characteristics of ELCBs mainly include the following

• This circuit breaker connects the phase, earth wires and the neutral
• The function of this circuit breaker depends on the current leakage

RCCB (Residual Current Circuit Breaker)

An RCCB is an essential current sensing device that is used to protect low voltage circuits from fault. This includes switch devices used to shut down the circuit when a circuit malfunction occurs. The RCCB aims to protect individuals from lightning strikes. Fire and electrical causes are caused by improper wiring or any faults on the earth. This type of circuit breaker is used in the event of a sudden shock or malfunction in the circuit.

For example, a person suddenly enters the electrical circuit with an exposed live wire. In that case, in the absence of this circuit breaker, the ground may be faulted and someone is in a dangerous position to take the shock. But, if the same circuit is defended with a circuit breaker, it will visit the circuit in a second, thus keeping the person away from electric shock. Therefore, it is good to install this circuit breaker in the electrical circuit.

Characteristics of RCCBCharacteristics of the RCCB mainly include the following

• Both wires are connected by phase and neutral RCCB
• Whenever a ground fault occurs, it trips the circuit
• The amount of current supply through the line should return by neutral
• This is a very effective form of shock protection

Thus, what is a circuit breaker is about, the difference between MCB, MCCB, ELCB, RCCB and its characteristics. Moreover, any questions related to applying this concept or applying electrical projects, please leave your suggestions, ideas and feedback by commenting in the comment section below. Here is a question for you, what is the main function of circuit breaker?

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