INSTALLATION
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1.2.1 Input Line Voltage
Wire according to the following points:
Primary wiring: Overcurrent protection should be provided by a 12 to 15 A building
installation circuit breaker. Wiring methods from the branch circuit breaker to the PWR-240/
PWR-480 power supply shall comply with the National Electric Code ANSI\NFPA.
For primary wiring use a 3-conductor cable with minimum size 13 AWG for every conductor.
Choose the overall cable diameter and UL Listed conduits accordingly. These conductors
have to be inserted into the dedicated terminal blocks on the DIN rail (see diagram) which
are marked Line (L) neutral (N) and Protection Earth (PE).
The terminal block marked with the ground symbol is a special block which allows direct
connection of the Protection Earth with the enclosure of the PWR-240/PWR-480.
The AC input cable must be inserted through one of the Glands and the individual wires
installed into the AC terminal block.
Replace the protection cover over the spring clamp connector after correctly installing the
wires.
The AC plug can only be used temporarily during installation or maintenance procedures.
Figure 6 – PWR-240/PWR-480 AC Line Terminal Block with Protection Covers
protection covers