8-channel thermocouple marshalled termination assembly with integrated cold-junction compensation
The Siemens 6ES7650-1AF51-2XX0 is a SIMATIC PCS 7 marshalled termination assembly for eight thermocouple channels. Siemens identifies it for compatible ET 200M SM 331 thermocouple input modules.
The assembly provides field thermocouple terminals, shield connections, a built-in reference-junction sensor, fused module power and a green power indicator. Correct SM 331 order number and hardware revision must be verified before procurement.
| Lifecycle | Phase Out Started; unrestricted spare part supply |
| Official confirmation | Siemens Industry Mall and official MTA documentation confirm the exact order number, eight-channel function and ET 200M module fit. |
| Successor | No exact direct successor was confirmed in the reviewed official documents. |
| Supply approach | Verify MTA order number, SM 331 module and revision, field wiring, housing, condition, package scope and warranty. |
| Parameter | Official specification | Procurement significance |
|---|---|---|
| Product type | Thermocouple marshalled termination assembly | Match the TC MTA, not RTD, current or voltage variants. |
| Channels | 8 thermocouple channels | Confirm the required number and sensor types. |
| Compatible modules | 6ES7331-7PF10-0AB0 from E-Stand 4 and 6ES7331-7PF11-0AB0 | Verify the installed SM 331 article and hardware revision. |
| Reference junction | Built-in RTD reference-junction sensor | Preserve correct compensation and thermal installation. |
| Power input | 21.6 to 28.8 V DC; 0.243 A maximum | Check cabinet power and protection. |
| Power dissipation | 1 W typical | Include heat load in panel planning. |
| Module-power fuse | 0.5 A | Confirm replacement fuse and maintenance practice. |
| Indicator | Green LED for module power | Use only as a supply-presence indication. |
| Mounting | 35 mm deep top-hat DIN rail | Check rail space and enclosure layout. |
| Environment | −25 to +60 °C; 5% to 95% RH, non-condensing | Confirm cabinet environment and condensation control. |
Terminate thermocouple field wiring for a compatible ET 200M analog input module.
Use the integrated reference sensor where the complete wiring and module configuration support the documented design.
Replace an existing TC MTA after confirming the SM 331 order number, revision, wiring and housing.
Confirm 6ES7650-1AF51-2XX0 and avoid RTD, analog-output or fail-safe MTA variants.
Verify 6ES7331-7PF10-0AB0 from E-Stand 4 or 6ES7331-7PF11-0AB0.
Check thermocouple types, polarity, shields, reference junction, field terminals and cabinet grounding.
Confirm housing, connector, fuse, documentation, condition, warranty and destination.
Siemens Industry Mall lists 6ES7650-1AF51-2XX0 with Phase Out Started and unrestricted spare part supply. This wording is retained without changing it to Discontinued; availability and service scope still require current confirmation.
It is an eight-channel Siemens PCS 7 thermocouple marshalled termination assembly for compatible ET 200M modules.
Siemens lists 6ES7331-7PF10-0AB0 from E-Stand 4 and 6ES7331-7PF11-0AB0.
Yes. The official documentation describes a built-in RTD reference-junction sensor.
The official specification gives 21.6 to 28.8 V DC with 0.243 A maximum current.
Provide the MTA number, SM 331 number and revision, thermocouple types, quantity and destination.
Request stock verification, SM 331 compatibility checks, global delivery options and warranty details.
A structured path from MTA identity and I/O compatibility review to protected global delivery.
Order number, housing, terminals, fuse, reference sensor and visible condition are checked.
SM 331 order number, hardware revision, thermocouple wiring and cabinet requirements are documented.
Packing, freight route, export documentation, warranty scope and destination details are coordinated.
| Stage | What we verify | Buyer input |
|---|---|---|
| Before quote | Exact MTA, availability, condition and included connectors | Quantity, country and delivery destination |
| Compatibility review | SM 331 revision, thermocouple wiring, power and grounding compatibility | SM 331 number, E-Stand and thermocouple details |
| Before shipment | Label, terminals, housing, fuse, packing and documents | Receiving requirements and contact details |
Send 6ES7650-1AF51-2XX0, the SM 331 order number, hardware revision and thermocouple requirements for a focused response.
Provide the model, quantity, condition preference and destination so the correct service scope can be prepared.
| 6ES7315-2AH14-0AB0 | 1756-L83E | 3BSE018161R1 |
| CC-PAIH01 | KJ3001X1-BA1 | AAI141-S00 |
| 3500/15 | BMXP342020 | KFD2-STC4-Ex1 |
| IB IL 24 DI 16 | CX5130-0125 | IC695CPE310 |
| F8650X | FBM201 | 6ES7134-6GF00-0AA1 |
| 1756-IB16 | 3BSE020514R1 | CC-PAOX01 |
| KJ3222X1-BA1 | AAI543-S00 | 3500/22M |
| BMXDDI1602 | KFD2-SR2-Ex2.W | IB IL 24 DO 16 |
| EL1008 | IC695ETM001 | F6217 |
| FBM207 | 6GK5208-0BA10-2AA3 | 1756-EN2T |
| 3BSE013252R1 | CC-PDIL01 | VE4003S2B1 |
| ADV151-P00 | 3500/32M | BMXDDO1602 |
| KCD2-SCD-Ex1 | FL SWITCH 1008N | EL2008 |
| IC694MDL645 | F3330 | FBM217 |
| 6AV2124-0MC01-0AX0 | 1794-AENTR | 3BSE041882R1 |
| CC-PCNT01 | KJ2003X1-BB1 | AFV10D-S41201 |
| 3500/42M | 140CPU67160 | NJ2-V3-N |
| QUINT4-PS/1AC/24DC/10 | EL3064 | IS220PAICH1A |
| X-CPU 01 | P0926JM | 6SL3210-1KE21-7UF1 |
| 2711P-T10C22D9P | 3BSE008538R1 | 51304540-100 |
Share the installed model, network architecture and application constraints before selecting any alternative.
List the required models, quantities and application constraints. Every alternative must be checked independently before purchase.
