6.7 Power supply
Table 6-2 24 to 48 VDC safety extra-low voltage overview
Device Device version
(power supply)
24 V safety extra-low voltage (SELV)
can be connected redundantly
X304-2FE 1 x 24 VDC ●
X306-1LD FE 1 x 24 VDC ●
X307-3 1 x 24 VDC ●
X307-3LD 1 x 24 VDC ●
X308-2 1 x 24 VDC ●
X308-2LD 1 x 24 VDC ●
X308-2LH 1 x 24 VDC ●
X308-2LH+ 1 x 24 VDC ●
X310 1 x 24 VDC ●
X310FE 1 x 24 VDC ●
X320-1 FE 1 x 24 VDC ●
X320-3LD FE 1 x 24 VDC ●
WARNING
Operation only with safety extra-low voltage
● The IE Switch X-300 is designed for operation with safety extra-low voltage (SELV). This
means that only safety extra-low voltages (SELV) complying with IEC950/EN60950/
VDE0805 can be connected to the power supply terminals.
● The power supply unit for the IE Switch X-300 power supply must meet NEC Class 2, as
described by the National Electrical Code(r) (ANSI/NFPA 70).
● The power of all connected power supply units must total the equivalent of a power source
with limited power (LPS limited power source).
● If the device is connected to a redundant power supply (two separate power supplies), both
must meet these requirements.
● The signaling contact can be subjected to a maximum load of 100 mA (safety extra-low
voltage (SELV), 24 V DC).
● Never operate the device with AC voltage or DC voltage higher than 32 V DC.
Connecting
6.7 Power supply
SCALANCE X-300
56 Compact Operating Instructions, 11/2019, A5E00982643-18