You have an MCB
connection! Undoubtedly, this must be making you think about the need for a
RCCB connection for your home or office!
If you are unaware,
then an RCCB is a Residual Current Circuit Breaker, which is a differential
current identifying device essential to prevent a low voltage circuit as and
when there is a leakage fault. It is inbuilt with a switch device that
instantly switches off the current supply, whenever, there is leakage of the current,
and it does not reaches back to the neutral. It protects small current leaks that
arise due to unintentional contact with individuals or an insulation failure.
The MCB is not sufficient to prevent the fuse alone.
The Need of RCCB when
MCB is there!
There are two major
sorts of electrical failures, which are quite threatening:
- Earth leakage that happens due to failure of cable insulation or accidental human contact. The MCB is not able to detect such faults.
- High current fault, which occurs due to low resistance or short current failure that the MCB prevents.
Functioning of RCCB
The core principle for
RCCB functioning is that the current flowing to and from one component should return
in full volume. If there is a slight difference of even mili-ampere, then the
RCCB detects it and trim the power supply. The leaked current is termed as the
residual current. The RCCBs are potential enough to identify the difference
between the current flowing the neutral and live wires. So, whenever there is
an imbalanced flow of the current or fluctuations in the voltage levels, then
the RCCB provides absolute protection to not only equipment but even to the
individuals.
There is an ON and OFF
window designed on the RCCB window at the top of the chamber. There are few
leading manufacturers, like HPL that offer residual current circuit breaker of advanced technology. Using such devices have eliminated
the use of MCB within electrical fixtures.
RCCB Types
There are two types of
RCCB units – 2-pole and 4-pole. The 2-pole is ideal for single-phase
electricity supply while the 4-pole is perfect for connections with 3-phase
electric supply. Besides these two forms, the RCCB units may also vary
depending on their ratings. You may select the unit depending on your overall
electricity consumption.
Electric power is essential, but it can be more user-friendly with proper protection. So make use of Residual current circuit breaker units and impart high protection in your home and workplace.
