PRODUCTS

RCCB

Residual Current Circuit Breaker

A Residual Current Circuit Breaker (RCCB) is an essential safety measure when it comes to protection in electrical circuits. It is a current sensing device, which can automatically detect and trip against electrical leakage currents in the circuit whenever a fault occurs, specifically earth leakage faults in the connected circuit, or when the current exceeds the rated sensitivity, thereby ensuring the protection of a person against electric shocks, electrocution and possible outbreaks of fire. This residential current breaker is to be used in series with a fuse or a MCB in order to safeguard themselves from over currents and short circuits that could be potentially damaging.

IPD offers ABB’s Residual Current Circuit Breaker (RCCB), a range designed to ensure efficiency and protection. Its features include easy installation due to the composition of two different seats for cables and busbars, presence of bi-directional cylindrical terminal ensure higher safety of connecting operations, making them easier, reliable in extreme conditions, Improved combination with System pro M compact® accessories and laser printed information to ensure readability over time.

Our products are compliant to worldwide product standards (AS/NZS61008-1; IEC/EN 61008-2-1) warranting reliability and safety for people and assets. Our electrical Residual Current Circuit Breaker (RCCB) range caters to domestic, industrial and commercial applications with multiple pole configurations namely, 1P+N and 3P+N and breaking capacities and rated currents up to 10kA and 100A respectively. Rated residual current sensitivity I?n ranging from 30mA to 300mA. AC, A, B, AP-R types available to ensure protection against all kinds of earth fault currents, from AC residual currents to smooth DC residual currents or currents with low residual ripple which are common in devices like frequency converters, medical equipment, and UPS systems.

Browse our range of Residual Current Circuit Breakers (RCCB) below. If you would like to find out more information about our electrical RCCB products, get in touch with us on 1300 556 601 today.

Frequently Asked Questions

IPD offers ABB’s Residual Current Circuit Breaker (RCCB), a range designed to ensure efficiency and protection with a rated residual current sensitivity I?n range from 30mA to 300mA. 

AC, A, B, AP-R types are available to ensure protection against all kinds of earth fault currents from AC residual currents to smooth DC residual currents or currents with low residual ripple which are common in devices like frequency converters, medical equipment and UPS systems. 

A type AC RCCB (Residual Current Circuit Breaker) detects and trips the circuit on sinusoidal residual current and can be used in applications where resistive, capacitive and inductive loads are present, generally without any electronic components. 

A type A RCCB (Residual Current Circuit Breaker) detects and trips the circuit on sinusoidal residual current and on residual pulsating or continuous direct current of either polarity up to 6mA and can be used in three phase and single phase applications with electronic components. 

A type B RCCB (Residual Current Circuit Breaker) detects and trips the circuit on sinusoidal residual current up to 1kHz, on residual pulsating or continuous direct current of either polarity and in addition for composite residual currents. It is used in three phase and single phase applications, well suited for usage along with electronic equipment and Power Electronic Converter Systems (PECS). 

A type AP-R RCCB (Residual Current Circuit Breaker) detects and trips the circuit on sinusoidal residual current and on residual pulsating or continuous direct current of either polarity up to 6mA along with resistance to unwanted tripping, offering good protection and isolation. It is used in three phase and single phase applications with electronic components. 

If the circuit is supplied with a concatenate voltage higher than 254 V, as in the usual case of 3 phase network with concatenate voltage (phase-phase) of 400 V, it is not possible to use these RCCBs wiring only the phases because the circuit of the test button will not be supplied. 

IPD offers ABB’s Residual Current Circuit Breaker (RCCB), a range designed to ensure efficiency and protection and are compliant to worldwide product standards (AS/NZS 61008-1; IEC/EN 61008-2-1). This Standard proposes necessary safety and associated requirements for residual current operated circuit breakers for household and similar uses, not integrating overcurrent protection, for rated voltages not exceeding 440 V AC and rated currents not exceeding 125 A, intended mainly for protection against shock-hazard.  

To deliver protection against indirect contact in TT systems, the circuit breaker must be coordinated with the resistance of the grounding system in the conventional ratio: IΔn ≤ 50 V. 

With this coordination ratio the protection against indirect contact is automatically checked in the case of direct current faults, since the admissible limit contact voltage in direct current is 120 V, which parallels to 50 V in alternating current. 

An allowable limit contact voltage has not yet been established in high-frequency faults at the regulatory level. While the risks for the human body decrease as the frequency increases, until the standards have set these values, the Standard IEC EN 62423 recommends as a preventative measure to retain the value of 50 V unchanged at higher frequencies. In order to do this, it is required to consider the actual tripping value of a possible fault frequency.

A continuous check of the status of the DC fault currents detection path is ensured by the self-diagnostic functionality. Each few seconds, an internal micro-controller can verify the status of the main electronic components as well as the firmware integrity of the Voltage Dependent PCBA (Printed Circuit Board Assembly). If the self-diagnostic detects a malfunctioning, the RCCB (Residual Current Circuit Breaker) will trip. 

Products to compare:
Comparing Products