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


(L-N) connection is used in SINGLE/THREE PHASE CONNECTION.


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


  • Before UPS: a jumper between 4 and 6
  • After UPS: a jumper between 4 and 6 and a jumper between 7 and 9
  • You will find that powering terminals are divided to three parts
  • The first part (Before UPS Connectors) consists of 8 connectors:
    • Connector number 4 and connector number 6 must be shorted together using fork-terminals short
    • Connector number 1 is connected to the first phase of the Main cable
    • Connector number 3 is connected is connected to the neutral of the Main cable
    • Connector number 5 and Connector number 8 are Not Connected
  • The second part is a couple of connectors used for connecting earth of the 3-wires cable
  • The second part (After UPS Connectors) consists of 9 connectors:
    • Connector number 4 and connector number 6 must be shorted together using fork terminals short
    • Connector number 7 and connector number 9 must be shorted together using fork terminals short
    • Connector number 1 is connected to the first phase of the UPS cable
    • Connector number 3 is connected is connected to the neutral of the UPS cable
    • Connector number 5 and Connector number 8 are Not Connected


After connecting power Rosetta Line to Neutral, you need to connect a short between AC_IN socket and PH_N socket as shown in figures here.