Answer / hero

Circuit Breaker:-
A circuit breaker is an auto & manuly operated
electrical switch by using the contact as a air,
thermosatatic element, vacume for protect an electrical
circuit overload, short circuit & earth fault. Any fault
occured in the circuit the contact automatically opened.

Switch:-
A switch is a manuly operated by using contactor
to open and close the circuit, interrupting the current

Answer / thowsif

Circuit Breaker:-
A circuit breaker is an automatically-operated
electrical switch designed to protect an electrical circuit
from damage caused by overload or short circuit. Its basic
function is to detect a fault condition and, by
interrupting continuity, to immediately discontinue
electrical flow.


Switch:-
A switch is an electrical component that can
break an electrical circuit, interrupting the current or
diverting it from one conductor to another

Answer / hatem samir

Circuit breaker :
A mechanical switching device capable of making , carring
and breaking currents under normal conditions and abnormal
conditions like short circuit

Switch :
A mechanical switching device capable of making , carring
and breaking currents under normal conditions but not
breaking under abnormal conditions such as short circuit

Answer / hammad khan (uwa)

Circuit Breaker have the switching capability of switching on and off any kind of currents that is the load current and short circuit currents and can be operated under load conditions.

Whereas a Disconnection switch can only be operated under no load conditions. Currents of Busbar without load and also no load currents of transformer with low rating can be switched on and off. So interlocking with circuit breaker is necessary.

Reference: Power System Engineering, Planning and Design by Schlabbach and Rofalski.

Kind Regards

Hammad Khan
University of Western Australia

Answer / mashani

a. Circuit Breaker(CB):may operated when load is still
conneted
switch:may operated when load is allready openned
thats why the position of Disconnected switch is before CB
b. Circuit Breaker ussualy opearted with automation
(PLC/Microntroller whichinside of circuit breaker is relay-
relay protection such as over current protection,over
voltage protection, ground fault,etc)
Switc usualy operated manually
c. Circuit breaker:could reduction of surge wich caused by
switching with material inside CB(such as SF6 for HV,
Vacuum for MV, Air for LV)thats why CB may operated when
load is still conneted
Swith:doesn't have any material to reduction the surge,
thats why it's may not operated if there is still load
connected
but switch an CB is have same purpose to connected an
disconnected between load and source....
please correct my answer...thx

Answer / l.s.yadav

Ciecuit Breaker: A circuit breaker is an auto & manuly
operated
electrical switch by using the contact as a air,
thermosatatic element, vacume for protect an electrical
circuit overload, short circuit & earth fault. Any fault
occured in the circuit the contact automatically opened.

Switch:-
A switch is a manuly operated by using contactor
to open and close the circuit, interrupting the current

Answer / gunasekaran

CB break the fault current with the help of relay switch is
not breaking any fault current are any current it is manual
operated

Answer / firoj

the main difference between a C.B. and a switch is that a
circuit breaker is operated with the help of relays,
electronic circuits....that is why its operation can be
automatic or manual..
on the other hand switch is a manual device
The purpose of the both device is to make or brake a circuit
under faulty condition

Answer / sandeep

As i know..
switch disconnect the circuit at abnormal conditions and not
reform the citcuit whereas circuit breaker can connect or
disconnect the circuit at normal and abnormal situations..

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