It has a hot chassis, which is not the safest arrangement - but I installed a North American-style, 120-V polarized plug that helps some. I can email a photo for you to verify this is what you are wanting. You would need to send me your email address.
Shipping to Brazil would undoubtedly cost as much or more than the set is worth. Plus, I don't want to go through the hassle of international shipping. Do you have a friend in the U.S. that could receive the set, and then ship it to you?