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    amrhammad's Avatar
    amrhammad Posts: 1, Reputation: 1
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    #1

    Jul 17, 2008, 06:00 PM
    12000 amp circuit breaker
    Is there circuit breakers with 12000 ampere rating, and what about the max ratings available
    rsain2004's Avatar
    rsain2004 Posts: 207, Reputation: 6
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    #2

    Jul 17, 2008, 07:09 PM
    I'm not sure of the application in question... I've worked with 18KV OCBs on really big feeders, and 2.5 MW 25KV main breakers on Cat 3516s. In my experience, breakers get as big as wanted... it depends on the cost...
    MasBagong's Avatar
    MasBagong Posts: 3, Reputation: 1
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    #3

    Jul 20, 2008, 01:41 AM
    For low voltage application (less than 1000 Volt), maximum current rating is 6300A.
    For medium voltage application (1000 volt - 52000 volt), normally up to 5000A. Some manufacturer provide higher current rating, up to 10.000 A for special application.
    For high voltage application, normally up to 3150A.
    Normally, the higher the voltage, the lower the current rating will be.

    What application is the CB for?
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