Siemens SIMATIC IPC627E Operating Instructions Manual page 110

Technical specifications
8.2 General technical specifications
Safety
Protection class
Degree of pollution
Transient overvoltages
Safety specifications
The device must only be connected to a 24 V DC power supply which meets the require-
1
ments of safe extra-low voltage (SELV) according to IEC/EN/DIN EN/UL 601010-2-201. A
protective conductor must also be used (see chapter "Connecting the 24 VDC power
supply (Page 49)").
110
Protection class I to IEC 61140
Device is designed for environments with pollution degree 2
Device is designed for connection to supply with overvoltage
category II (transient overvoltages up to 2500 V)
IEC 61010-2-201
•
EN 61010-2-201
•
UL 61010-2-201
•
CSA C22.2 No 61010-2-201
•
Operating Instructions, 12/2018, A5E44297201-AA
SIMATIC IPC627E