SIMATIC S7-300 SM 331 Ex Analog Input Module
The Siemens 6ES7331-7SF00-0AB0 is an isolated SIMATIC S7-300 SM 331 Ex analog input module for eight thermocouple inputs or four Pt100 inputs. Siemens identifies it for signals from hazardous areas, with diagnostic capability and PTB testing.
| Official lifecycle wording | PM400: Announcement of product phase-out; product phase-out since 01.10.2023 |
| Procurement note | Confirm current availability, exact article number, firmware or project requirements and supplied accessories before ordering. |
| Manufacturer | Siemens |
| Complete article number | 6ES7331-7SF00-0AB0 |
| Product designation | SIMATIC S7-300 SM 331 Ex |
| Product type | Isolated analog input module |
| Thermocouple inputs | 8 |
| Pt100 inputs | 4 |
| Signal origin | Hazardous area |
| Electrical isolation | Yes |
| Diagnostics | Diagnostics-capable |
| Test reference | PTB tested |
| Front connection | 1 × 20-pole |
| Net weight | 0.333 kg |
Receives approved thermocouple or Pt100 signals from hazardous-area instrumentation.
Supports temperature measurement with the exact thermocouple or resistance-sensor configuration.
Used for like-for-like maintenance of installed S7-300 Ex analog input stations.
Verify the complete 6ES7331-7SF00-0AB0 MLFB, S7-300 rack and CPU, hazardous-area approval context, thermocouple or Pt100 wiring, channel allocation, front connector and STEP 7 configuration before replacement.
Request nameplate, connector or terminal-area and installed-system photographs. Confirm quantity, condition, accessories, documentation, inspection requirements, warranty terms and destination.
Siemens Industry Mall identifies 6ES7331-7SF00-0AB0 as PM400: Announcement of product phase-out and states product phase-out since 01.10.2023. Procurement decisions should continue to follow the complete article number.
It is a Siemens SIMATIC S7-300 SM 331 Ex isolated analog input module.
Siemens specifies eight thermocouple inputs or four Pt100 inputs.
Yes. Siemens identifies the module for signals from hazardous areas.
Yes, the official product description identifies it as diagnostics-capable.
The official description specifies one 20-pole connection.
Siemens lists PM400: Announcement of product phase-out, with phase-out since 01.10.2023.
Send the full order code, quantity, destination, sensor type, Ex documentation and S7-300 configuration for availability and compatibility review.
Technical identification, hazardous-area signal compatibility review, sourcing coordination, inspection planning and global delivery support for S7-300 Ex measurement projects.
We compare the complete 6ES7331-7SF00-0AB0 article number, SM 331 Ex designation, S7-300 station, thermocouple or Pt100 configuration, isolation requirements and available wiring information.
This helps prevent confusion with non-Ex SM 331 variants or different channel configurations. Sensor type, hazardous-area documentation, front connector and STEP 7 hardware configuration are reviewed when available.
Before dispatch, the agreed evidence can cover the nameplate, enclosure, plug-in area, contacts, LED label area and included accessories. Visible damage, contamination, storage condition and packaging needs can be added to the inspection scope.
The commercial review also aligns requested condition, quantity, lead time, warranty terms, supporting documents and destination-specific shipment requirements.
The full order code, system role and application requirements are reviewed as one configuration rather than as isolated keywords.
Procurement, engineering and maintenance teams receive a shared checklist covering hardware, project and commercial evidence.
Packing, documentation, transport preference and delivery destination are aligned early to support the maintenance schedule.
| Stage | Order support |
| 1. Inquiry | Send 6ES7331-7SF00-0AB0, quantity, destination and available installed-system or nameplate evidence. |
| 2. Compatibility review | We compare S7-300 rack, CPU, thermocouple or Pt100 configuration, hazardous-area documentation, front connector and STEP 7 requirements. |
| 3. Commercial alignment | Availability, condition, lead time, inspection evidence, warranty and delivery expectations are confirmed. |
| 4. Packing and dispatch | Protective packing and shipment documentation are coordinated for the destination and selected transport method. |
Share the exact quantity, installed-system configuration, application details and destination for an availability and compatibility review.
A 70-model cross-brand reference list for automation, networking, safety, drives, instrumentation and maintenance procurement. Confirm every complete order code before purchase.
| 70 Model References | |||
| 6GK5208-0BA00-2FC2 | 330104-02-09-10-01-00 | PRO3000 | EM100 - 823-865 |
| 0243002430 4.300-2420 | E175096 | REG-K 12X230/16 | 140471-01 3500/70 |
| AB444230035 | 15B10851G1 | KJ2003X1-BA2 /12P2093X102 | R6010 |
| SD55X | BM11D | DSX-PLA004 | ABB M2301 2TMA070080W0012 |
| GT437-491 | CK721-A | PR 4501 | BMP21 |
| EB0518(A) FXYMP-M 1677287 | 5642-50 | PSM700 | 24138990 |
| 60950-50 | ACHILLES-NGFW-300-2-R3B | LM4-LC24J-2A2UN | WV-S1112 |
| F9342DT-01 | 2182-227 | 233.52.100 | 15B10840G1 / 15H50541 |
| Nrk16/A | IEM-3000-8TM | ABB DC505-FBP 1SAP220000R0001 | 1SVR450055R0000 |
| 14YB3-230/C 29317AA8 | D504 | ATM-20 | GVAG-2VK1S |
| sms1600 pn sg001043 | 407860 | OC485 | B4-24-T-5-30 |
| PRO32IN 10290-0000-F REV-C | ABB PM582 / 1SAP140200R0100 | EDB14030 | MP80 |
| 102MC-SC | 02-70325-02 | 1860114A | TSW-552-BS |
| K9149FF-05 AS KG149FA | BOB1024 | 9418/01-201-10 | ABB 61318968 NDPC-02 |
| Eurotherm 2404 | RKLB57 6180BKR000000-H1111 | KNX /644692 | AVPR100S151213 |
| SDVN-2S | LBB4540/04 F01U508294 HW04/02 WK:2017 | EFCB12T-OE1 | O5H700 |
| GTD-2000Tx | ULFIM-D37M-45-XOR | 1606-XLE240EN | WTD-868-T |
| H2O | MA2-08E | ||
Send the exact order code, quantity and destination for availability, configuration and compatibility review.
