i would like to purchase such type of electric connector which should
operate on 440 volt AC.it have 4 pole.pole A,B,C and D.pole A and B
should connect each other when we give supply to connector coil Or
when we switch on connecter.Pole C and D should connect each other
when we Switch off the connector.In other mean i want to take work
from connector as changeover switch.In market this type of connector
available in here Pakistan but their pole have only 100 Amp capacity
but i need 500 Amp capacity of its pole.

Is what you want a 4 pole circuit breaker type of switch?

Would it be switched daily, hourly, every minute?

Should it be weather proof?  

Can you gang four of the swithches you can get?  

What is the make and model number  manufacturer of the item that almost works?

Should have asked:

 Can you gang Five 100 amp items together to get the 500 amp device?

Dear,
My question was simple.it will only operate when we will give 440V
supply to its coil(simple as normal connector which is often use to
On/Off motor supply).I want a simple connector but i need to operate
it as a change over.siemens or many other companies make this type of
connector but they have capacity till 100 Amp but i need 500 Amp.