Siemens SIMATIC NET SCALANCE M826 Operating Instructions Manual page 46

Connecting up
4.4 Power supply
External power supply
Note
Permitted external power supplies
The power supply unit to supply the SCALANCE M826 must comply with the requirements
for a limited power source according to IEC/EN 60950-1, section 2.5.
The external power supply for the SCALANCE M826 must meet the requirements for NEC
class 2 circuits as specified in the National Electrical Code ® (ANSI/NFPA 70).
Refer to the section Connecting up (Page 39) and the installation instructions and
instructions for use of the manufacturer of the power supply, the battery or the accumulator.
See also
Terminals (Page 23)
46
Operating Instructions, 08/2018, C79000-G8976-C362-05
SCALANCE M826