whta is difference between contactor and breaker.
Answers were Sorted based on User's Feedback
Answer / rajendran m
Contactor is not tripping device
Breaker is tripping device
Is This Answer Correct ? | 8 Yes | 0 No |
Answer / ajit
contactor use to make contact bitween two pointsof
sircet ,and in other hand breaker is a electrical divice
which is use for break thecontact point in a sircet.
Is This Answer Correct ? | 2 Yes | 0 No |
Answer / suresh
both are circuit interupting devices. contactor is used for
interupting low currents and breaker is used to interrupt
high currents.
Is This Answer Correct ? | 3 Yes | 2 No |
contactor:
A contactor is an electrically controlled switch used for switching a power circuit, similar to a relay except with higher current ratings.
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......
so finally,contactor used for switching.......and circuit breaker is used for to protect a circuit.so that one is interrupt device.....
Is This Answer Correct ? | 1 Yes | 0 No |
Answer / dinesh chaudhary
contactor is simply used to make the contacts between two
ckts of low rating while breaker works when relay commands
i.e. relay is used as a sensing device which sense the
abnormal condition & command to the ckt breaker to brek the
ckt.
Is This Answer Correct ? | 1 Yes | 0 No |
Answer / vijay krishna rao
Yes both are tripping devices. But for breakers to trip,
relays send respective (frequency,voltage,current) signals
and accordingly trip based on the settings. Contactors trip
with no intentional time lag as soon as the voltage falls
below (may be 0.6-0.7 p.u), no signalling devices are used.
That's why one may have come across a situation, when there
is a grid fault and generator trips on auxillary motors
failure. As there (aux motors) are contactors present and
for a fault voltage drops, so contactors trip.
Is This Answer Correct ? | 1 Yes | 2 No |
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