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I am trying to select a 2 pole circuit protector (UL489 approved), to protect a 575V transformer. I am however unable to find any 2 pole CB that go above a 480Vac voltage rating. Is there anything I'm missing when it comes to branch circuit protection?

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I think it is easier to search directly for 600V equipment. Here is a list of some found through Google:

Siemens Industry ED62B030

Altech AB series

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  • \$\begingroup\$ Note: I'm not entirely sure that I understand your problem. I guess this is a three phase system which is outside of my "comfort zone". \$\endgroup\$ – Dejvid_no1 Sep 3 '14 at 19:31
  • \$\begingroup\$ I should have mentioned this in my question but I'm looking for 2 pole Circuit breakers. Thank you for the answer \$\endgroup\$ – SivaDotRender Sep 4 '14 at 2:24

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