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What is a delta breaker, and can I get a replacement?

Is there a current replacement for delta breakers?

Product Line:
Miniature Circuit Breakers

A Delta Breaker is a load-center breaker with 2 plug in stabs and a third wire from the third terminal that goes to the third leg of a transformer. This allowed you to use a single phase loadcenter and get three phase power by running a third wire back to the transformer. This no longer available and they will need to get a 3 phase load center.
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