why do we use magnetic contactors ?circuit breakers are not
enough?

Answer Posted / ashwani malhotra

The main function of magnetic contactor is to prevent
accidently operation after the power failure & again
recovery. Because as soon as power fail the holding coil
release the contacts and it will not operate untill someone
complete the hold circuit again .

Is This Answer Correct ?    24 Yes 4 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

what clearance required for 4.5 mva dry type transformer?

1634


hi frnds can any one help me ? plz send me placement paper of IOCL of Electrical streem .... plz send ....its urgent....

1299


what is the difference b/w pvc cu conductor and cu breaded wire..?

2895


Why it need to form a capcitor when it not been in use from three or two year. Plz describe it technically.

1472


how to decide choke rating for drive?

1890






best manufacturer for busbar for outdoor switchyard having double bus bar scheme, can any one share technical specification of busbar. 132kv voltage ?

1253


How do i carry out or know the vector group of a Dyn1 and Dyn5 transformer

1563


How much kv gas generator is needed to run 2 hp and 1 hp airconditioners, plus a refrigerator and 4 Tvs

4404


How to test the vector group of a Yd11 transformer? what are the relations to be checked between various vectors to confirm this vector group?

4007


who many types of fire explane with exmple

1742


What is the rating of a circuit breaker needed for 300 kv load in 33KV supply line of 33/415 transformer ? Whether 800/1200 amp vaccum circuit breaker can perform for a 33 KV line in input in 415 volt in output of the transformer ?

1257


what is the difference between vector scale and vector diagram?

3786


define superposition theorem thevnin theorem ,norton theorom?

1810


Is there any Institution for giving M-tech in Electrical engineering for those who r in service? Give the details please.

1578


What are the transformer losses?

680