Earth line MUST be connected if you install Line to Line.


(L-L) connection is ONLY used in THREE PHASE CONNECTION.


Hardware MUST be configured with Line to Line. if it’s reversed, causes FIRE RISK.


  • Before UPS: a jumper between 2 and 5 and a jumper between 4 and 8


  • After UPS: a jumper between 2 and 5 and a jumper between 4 and 8



  • You will find that powering terminals are divided to three parts


  • The first part (Before UPS connectors) consists of 8 connectors:
    • Connector number 2 and connector number 5 must be shorted together using fork-terminals short
    • Connector number 4 and connector number 8 must be shorted together using fork terminals short
    • Connector number 1 is connected to the first phase of the Mains cable
    • Connector number 3 is connected to the second phase of the Mains cable
    • Connector number 6 is connected to the third phase of the Mains cable


  • The second part is a couple of connectors used for connecting earth of the 5-wires cable


  • The third part (After UPS connectors) consists of 9 connectors:
    • Connector number 2 and connector number 5 must be shorted together using fork terminals short
    • Connector number 4 and connector number 8 must be shorted together using fork terminals short
    • Connector number 6 is connected to the third phase of the UPS cable


After connecting power Rosetta Line to Line, you need to connect a short between AC_IN socket and PH_E socket as shown above.

DO NOT EVER USE NEUTRAL CABLE in line to line configuration. Connect Earth cable in one of its two Earth connector and DO NOT connect it in any other connector.