Hello everyone, i have a doubt in contactors.
Actually i m need of a contactor whose coil rating is 48Vdc and contact rating is of 350A. My supply voltage is of 48Vdc (Battery).It is required for motor application of 48V(27V*3phase).
I had an Alright contactor of 48Vdc coil, Contact rating of DC-3 350A, 48Vdc. But this is presently not available in market. But for an alternate, i m not getting the similar rating of contactor for DC contacts.Actually there are contactors of 48Vdc coil, but its corresponding contacts are available for AC( ie. AC-3, AC-4,....).For a contactor with DC coil/contacts voltage rating should be less than corresponding AC voltage rating.
So my question is How can i replace a contactor having DC contacts and DC excitation(coil) , with, AC contact and DC excitation(coil), exactly? Is there any formula or standard, if so please reply immediately..........
Actually i m need of a contactor whose coil rating is 48Vdc and contact rating is of 350A. My supply voltage is of 48Vdc (Battery).It is required for motor application of 48V(27V*3phase).
I had an Alright contactor of 48Vdc coil, Contact rating of DC-3 350A, 48Vdc. But this is presently not available in market. But for an alternate, i m not getting the similar rating of contactor for DC contacts.Actually there are contactors of 48Vdc coil, but its corresponding contacts are available for AC( ie. AC-3, AC-4,....).For a contactor with DC coil/contacts voltage rating should be less than corresponding AC voltage rating.
So my question is How can i replace a contactor having DC contacts and DC excitation(coil) , with, AC contact and DC excitation(coil), exactly? Is there any formula or standard, if so please reply immediately..........
