Residual Current Breaker with Over-Current RCBO

March 19, 2023by Binghalib Trading

Residual Current Breaker with Over-Current (RCBO)

A Residual Current Breaker with Over-Current (RCBO) is a basic well-being measure while safeguarding electrical circuits. The RCBO is a current-detecting part that can naturally detach and gauge the circuit at whatever point the current surpasses the evaluated responsiveness, or a shortcoming occurs in an associated circuit.

This gadget is purposed to shield one from the gamble of electrical shocks, fire sand electric shocks. It can likewise aid unexpected earth issues. The establishment of an RCBO guarantees that a circuit trips right away and safeguards you from electric shock. After realizing the RCBO meaning, you can keep on perusing this article to uncover seriously in regard to the standards and benefits.

Working principle of RCBO

RCBO deals with Kirchhoff’s rule that the approaching current ought to be equivalent to the active current in a circuit. RCBO thought about the distinction in current qualities between non-partisan and live wires. Truly, the current that streams to the circuit from the live wire ought to rise to the one that courses through the unbiased wire.

On the off chance that a shortcoming occurs, the current from the unbiased wire decreases, and the differential between the two is alluded to as Private Current. At the point when the Private Current is distinguished, the electrical framework sets off the RCBO to trip off the circuit.

The test circuit remembered for the residual current gadget guarantees that the RCBO dependability is tried. After you press the test button, the current starts to stream in the test circuit since it laid out an unevenness on the unbiased curl, the RCBO excursions, and supply separates and really looks at the unwavering quality of RCBO.

RCBO, Residual Current Breaker with Over-Current RCBO

What is the advantage of RCBO?

All-in-one device

Previously, electrical experts introduced the small circuit breaker (MCB) and residual current gadget in an electrical switchboard. The residual current-operated circuit breaker is intended to shield the client from openness to unsafe currents. Interestingly, MCB safeguards the structured wiring from over-burdening.

Switchboards have restricted space, and introducing two separate devices for electrical assurance now and then becomes hazardous. Luckily, researchers have created RCBOs that can carry out double roles in safeguarding the structure wiring and clients and opening up space in the switchboard since RCBOs can supplant two separate devices.

For the most part, RCBOs can be introduced within a brief period. In this way, the RCBOs are used by circuit repairmen who need to try not to introduce both MCB and RCBO breakers.

Protection functions

It is a reduced security part that offers RCBO earth shortcoming assurance and MCB overcurrent security in a solitary unit. The gadget will switch both the unbiased and line guides. The Units highlight pointers that determine whether an excursion is because of an earth shortcoming or overcurrent.

Compact size

The RCBO circuit breaker is the most ideal choice for establishments in places with restricted space. RCBOs have little widths that permit you to introduce a few parts in a single nook.

Short installation time

RCBO gives a separating and solid residual current security. The disposal of isolated circuit breakers and wires significantly limits space requirements and establishment time.

High switching capacity

RCBOs have an impressively higher evaluated switching limit than the private current operated circuit breakers since the MCB part that offers hamper embraces impede.

Different types of RCBO?

The RCBOs are partitioned into different kinds in light of the working capability.

Type S: A sinusoidal private current gadget integrates time delay. You can introduce it upstream from a Sort AC RCB to offer selectivity. You can’t involve this RCD for extra assurance, since it can’t work under the required season of 40mS.

Type AC: They are usually introduced in homes and intended to be used for exchanging sinusoidal residual current to offer inductive, capacitive, or resistive hardware. These RCBOs work immediately to identify lopsidedness and don’t have a period delay.

Type A: Is used for residual throbbing DC of up to 6mA and substituting sinusoidal residual current

Type F: They are used for recurrence-controlled gear and apparatuses, including dishwashers, clothes washers, and air moulding regulators with variable speed drives.

Type B: They are used for three and single-stage gear like elevators, lifts, photovoltaic systems, welding hardware, and inverters.

Residual Current Circuit Breaker with Over Current Protection (RCBOs)

The reach intended to guarantee effectiveness and assurance

RCBOs are usually used in applications where there is the need to join security against overcurrents (over-burden and short out) and assurance against earth leakage currents.

RCBOs help in detecting this sort of deficiencies and outing the circuit guaranteeing total assurance of individuals and associated hardware.

Principal benefits

  • Complete range: Wide selection of codes to cover principal clients needs
  • Continuous operation: Simple investigating on the organization and decreased personal time for upkeep
  • Easy to install: Efficient in wiring activity
  • Global availability: Consistent with Nearby Guidelines and wide arrangement of Endorsements

What are RCBOs?

The residual current gadget (RCD) or residual current circuit breaker (RCCB) empowers the fast disengagement of power, accordingly keeping away from delayed and possibly serious shocks. An RCD gadget complete with overcurrent protection is called a RCBO, or residual current circuit breaker with overcurrent assurance.

The essential elements of RCBOs are to guarantee security against earth-issue currents, over-burden, and short-out currents. It is prescribed that an RCBO be connected to each different circuit, implying that a shortcoming in one circuit won’t influence the working of the others. Such devices consider detachment of the circuit for the security of individuals and gear if the current ends up being uneven. They can be operated only of other overcurrent defensive devices inside the evaluated cut-off.

Plan and testing necessities for RCBOs are framed in the arrangement of guidelines: IEC/EN 61009: Residual current circuit-breakers with necessary over-burden security for family and comparative purposes (RCBO).

What is the difference between an MCB and RCBO?

RCBO versus MCB

MCBs can’t safeguard against earth shortcomings, while RCBOs can safeguard against electric shocks and earth deficiencies.

MCBs screen the current stream and hinder circuits during short circuits and over-burden. Conversely, RCBOs screen the current move through the line and return stream in the impartial line. Likewise, the RCBOs can interfere with the circuit during earth leakage, impede, overcurrent.

You can utilize MCBs to safeguard air conditioners, lighting circuits, and different machines separated from devices and warmers with direct contact with water. Conversely, you can involve RCBO for security against electric shock. In this way, you can utilize it to interfere with the power, power attachments, and water radiators where you could have the chance of an electric shock.

You can choose MCBs in view of the greatest short-out current and load it can securely hinder and trip bend. The RCBOs incorporate the blend of RCBO and MCB. You can select them in view of the greatest short-out current and burden, and they can trip the bend, interfere, and offer the most extreme leakage current.

MCB can offer protection against short-circuits and overcurrent, while the RCBO can safeguard against earth leakage currents, short-circuits, and overcurrent.

When might you utilize a RCBO?

You can involve RCBO for protection against electric shocks. Specifically, you can utilize it to interfere with the power attachments and water radiator, where you can get a chance of electric shocks.


Circuit breakers help in shielding individuals and wiring systems from electrical mishaps. The RCBO is a blend of the RCB and MCB. Binghalib Engineering Enterprises is the leading-authorized distributor of industry leaders like ABB, LS Industrial System, and many other brands with substantial stock to cater to our customers. In the event that you want a PLC item, Binghalib Engineering Enterprises is quite possibly the best organization you really want to pick since it gives solid and great circuit breakers to help ventures and homes in restricting electrical mishaps. Likewise, their circuit breakers are intended for the worldwide market and deal with the greatest usefulness.

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