Siemens SIMATIC IPC PX-39A Operating Instructions Manual page 83

Safety
Protection class
Degree of pollution
Transient overvoltages
Safety specifications
The device may only be connected to a 24 V DC power supply that meets the require-
1
ments for safe extra-low voltage (SELV/PELV) in accordance with the IEC/UL/EN/DIN-EN
61010-2-201 standard (see section "Connecting the 24 V DC power supply (Page 46)").
not evaluated by UL
2
SIMATIC IPC PX-39A
Operating Instructions, 08/2022, A5E51699601-AA
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
• DIN EN 61010-2-201
• UL 61010-2-201
• CSA C22.2 No 61010-2-201
Technical specifications
8.2 General technical specifications
83