Iskra MT440 - Page 15

Connection
User’sManual 11
System/ connection Terminal assignment
Connection 1b (1W)
Single-phase connection
Connection 3b (1W3)
Three-phase – three-wire connection with
balanced load
Connection 3u (2W3)
Three-phase – three-wire connection with
unbalanced load
Connection 4b (1W4)
Three-phase – four-wire connection with
balanced load
Connection 4u (3W4)
Three-phase – four-wire connection with
unbalanced load