Pls, i need the power and control circuit design for two pumps running one at a time interval of 30mins
one of the pump will run for 30mins then stop automatically for second to start running then after 30mins go back to the first automatically.
i need it urgently

 

I would use a CD4060 timer, unless you want a ready made timer for your pump, need to know what voltage/ current ?

http://www.zen22142.zen.co.uk/Circuits/Timing/rt8.htm

 

You need high speed logic circuits if you need it urgently.

 

If this is for a commercial application then go to the store and buy one of these. Then configure it to divide the work between two pumps.
You have provided next to no information about your location or the pumps. Therefore you get next to no information and also your "Urgent" is your problem.

Ron