Posted 07 December 2005 - 11:56 AM
Posted 07 December 2005 - 05:51 PM
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I have used 3000 Amp bar contactors in the past, but not 4500.
I believe that Ghisalba used to make large bar contactors but I can not find reference on their website http://www.ghisalba.com/ It may be worth enquiring from them.
Telemechanique also used to make large bar type contactors.
An alternative is to use a motorised circuit breaker.
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Posted 09 December 2005 - 02:00 AM
Micro have a range of bar type contactors available to 3000 Amps. Needless to say a paralleling strategy would need to be adopted to cater for the 4500 amp capacity you require. This should be relatively easy to achieved because contactors in this style & size are generally built to order.
Hope that helps.
PS: The motor operated circuit breaker as suggested by Marke is another possibility. If you pursue that be sure to confirm max number of mechanical and electrical operations. This can change/reduce quite dramatically when a breaker is fitted with a motor operator.
Posted 09 December 2005 - 03:45 AM
Was just revisiting this to correct the incorrect spelling and add the URL but you beat me to it.
Posted 09 December 2005 - 05:10 AM
Hehehe.....sorry for that one.
Anyway, thanks for the name, I was looking for information on some of their relays and could just remember it was "micro"-something.
Posted 09 December 2005 - 11:47 AM
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