Description
PS 955-3NF11 — Power Supply
Siemens · PS 955-3NF11 · 6ES5955-3NF11
Description
SIMATIC S5 955 power supply module for the S5-135U/155U central controller or expansion unit, converting 24V DC input to a 5V DC logic supply for CPU and I/O modules.
Key specifications
Parameter | Value |
Function | DC/DC power supply module |
Input voltage | 24 V DC |
Output voltage | 5 V DC |
Output current | 18-40A (per PS 955 24VDC family; verify nameplate) |
Compatible controller | S5-135U/155U |
Reference
Field | Value |
Manufacturer (OEM) | Siemens |
Model | PS 955-3NF11 |
Part number | 6ES5955-3NF11 |
Category | Power Supply |
System family | SIMATIC S5-135U/155U |
Stores quantity | 22 |
Data confidence | medium |
Manuals filed (007 - Manuals)
- Manual CP1430 English Vol1.pdf — S5-115U system reference (CP/comms volume)
- 02 - CPU948 Programming Manual.pdf — S5 CPU programming reference (115U/155H family)
Notes
Classified within PS 955 family for S5-135U/155U (sibling parts 6ES5955-3NC41/-3NC42/-3NF42 documented with 18-40A output at 5V from 24VDC input); exact -3NF11 suffix current rating not independently confirmed, verify nameplate.
Source: Spare Parts List for Sales V7 (Bohemia Market / BM Global stores inventory). Filed in the AI HW Knowledge Base.