:::True-online or line interactive marine and rugged UPS. Connect;....  440,240v,208v,120 volt 50/60hz electricity onboard larger shipboard  naval ships with or without isolation,and rugged military systems requires different materiel gleaming than what is used for land-based power operations.  Shipboard power plants and systems require more specialized equipment due their inability to be grounded (ungrounded shipboard power) isolated.. All Powerstar Inc. products have double pole input breakers that are necessary to remove dangerous shock hazards(ungrounded shipboard power) mil standard

Powerstar uninterruptible power supplies (UPS) have become a valuable and important addition to  ships all over the world. Major cruise lines,such as Princess cruise lines, the US Navy, and US-allied navies equip their power systems with Powerstar UPS equipment. Many of our UPS employ isolation transformers that protect sailors from shock injuries. The isolation transformer also prevents electromagnetic interference from affecting lines. These isolation transformers are invaluable when it comes to protecting sailors on ships gleaming