Important of circuit breaker maintenance The circuit breaker maintenance is very important and it must added in periodical maintenance schedule.Why it so important?It is because of their importance for routine switching and for equipment protection and person. Production will stop if circuit breaker fails to operate because of a lack of preventive maintenance.The cost will [...]
When we design or build a electrical installation,we must know how to choose the suitable circuit breaker for the any application that we design.For electrician,this is compulsory knowledge.So here i want share my little knowledge about circuit breaker sizing method. This calculation for sizing the miniature circuit breaker.For other circuit breaker likes MCCB,ACB,VCB,OCB and etc,it [...]
What is Residual current circuit breaker ( RCCB )? This device is very important in electrical wiring.It is a life guard device to protect from electric shock.Others circuit breaker only can detect the fault from over current and short circuit but cannot detect the current leakage. That why RCCB is very important.Only this device can [...]
What is MCCB ( Molded Case Circuit Breaker ) ? It is a mechanical device ( BS 4752 ) to be used to connect and disconnect the circuit in normal and abnormal.Current rate for regular MCCB up to 3000 ampere.It is only available in a 3 pole only, usually for a system that has a [...]
MCB (Miniature Circuit Breaker ( BS 3871 ) is a mechanical device operate automatic operation designed to connect and disconnect the electrical circuit in the ordinary and extraordinary situation.Suitable for AC and DC voltage.It mean main function is to protected equipment or circuit from overload and short circuit. The size of MCB is small and [...]
What is a FUSE? Fuse is a basic device used to break the circuit when there is a overcurrent.it consists of metal wire fuse element which is connected by two terminal.fuse element will be blow if the current through it exceeds the limit was set. Its use is widespread due to the efficiency and durability.Also, [...]
Electrical distribution systems are often quite complicated. They cannot be absolutely fail-safe. Circuits are subject to destructive overcurrents. Harsh environments, general deterioration, accidental damage or damage from natural causes, excessive expansion or overloading of the electrical distribution system are factors which contribute to the occurrence of such overcurrent.
