Automation part number identifier
Paste an order or catalogue number and see which brand and product family it belongs to. The full prefix reference is underneath, so you can look up a part by hand as well.
Examples: 1756-L71, VFD022EL43A, TM221CE24R, ATV320U15N4B
Type or paste a number to identify it.
Prefix reference
Common prefixes for the four brands we support. It is a guide, not a complete catalogue.
| Prefix | Brand | Family | What it covers |
|---|---|---|---|
| 6ES7 21, 6ES7 22, 6ES7 23 | Siemens | S7-1200 (or older S7-200) | PLC CPUs and modulesBoth families share these numbers. Check the product name on the label. |
| 6ES7 288 | Siemens | S7-200 SMART | PLC CPUs and expansion |
| 6ES7 3 | Siemens | S7-300 | PLC CPUs, signal modules, power supplies |
| 6ES7 4 | Siemens | S7-400 | PLC CPUs and modules |
| 6ES7 5 | Siemens | S7-1500 and ET 200MP | PLC CPUs and I/O modules |
| 6ES7 1 | Siemens | ET 200 distributed I/O | Interface modules and I/O (ET 200S, ET 200SP, ET 200M) |
| 6ES7 953, 6ES7 954 | Siemens | SIMATIC memory cards | Micro Memory Cards (S7-300) and memory cards (S7-1200, S7-1500) |
| 6ES7 24 | Siemens | S7-1200 communication modules (CM 1241) | Serial and communication modules |
| 6ES7 972 | Siemens | PROFIBUS connectors | Bus connectors and accessories |
| 6AG1 | Siemens | SIPLUS | Extended-environment versions of standard Siemens products |
| 6ES5 | Siemens | SIMATIC S5 (legacy) | Older PLC modules |
| 6AV2, 6AV6 | Siemens | SIMATIC HMI | Operator panels (KTP, TP, OP, MP) |
| 6AV7 | Siemens | SIMATIC Panel PC | Industrial PCs and displays |
| 6SL3 | Siemens | SINAMICS drives | G120, V20 and S120 components |
| 6SE6 | Siemens | MICROMASTER 4 | AC drives (420, 430, 440) |
| 6SE7 | Siemens | MASTERDRIVES | Older drive systems |
| 6EP | Siemens | SITOP | 24 V DC power supplies |
| 6GK5 | Siemens | SCALANCE | Industrial Ethernet switches and wireless |
| 6GK7 | Siemens | Communication processors | CP modules for S7 PLCs |
| 6XV1 | Siemens | Industrial communication cable | PROFIBUS and Ethernet cabling |
| 6FC5 | Siemens | SINUMERIK | CNC control components |
| 3RT | Siemens | SIRIUS contactors | Power contactors |
| 3RH | Siemens | SIRIUS contactor relays | Control relays |
| 3RV | Siemens | SIRIUS motor protection breakers | Motor starter protectors |
| 3RU, 3RB | Siemens | SIRIUS overload relays | Thermal and electronic overloads |
| 3RW | Siemens | SIRIUS soft starters | Soft starters |
| 3RP | Siemens | SIRIUS timing relays | Timers |
| 3UG | Siemens | SIRIUS monitoring relays | Voltage, phase and current monitoring |
| 3SE | Siemens | SIRIUS position and safety switches | Limit and safety switches |
| 3SU | Siemens | SIRIUS commanding and signalling | Pushbuttons and indicator lights |
| 3VA | Siemens | SENTRON moulded-case breakers | Circuit protection |
| 3NA | Siemens | Low-voltage fuses | HRC fuses |
| 1LA, 1LE, 1LG | Siemens | SIMOTICS low-voltage motors | Three-phase induction motors |
| 1FK, 1FT | Siemens | SIMOTICS servo motors | Servo motors |
| 1756 | Allen-Bradley | ControlLogix | Controllers, chassis, power supplies, I/O and communication modules |
| 1769 | Allen-Bradley | CompactLogix and Compact I/O | Controllers, I/O, power supplies |
| 5069 | Allen-Bradley | Compact 5000 / CompactLogix 5380 | Controllers and I/O |
| 1794 | Allen-Bradley | FLEX I/O | Distributed I/O |
| 1734 | Allen-Bradley | POINT I/O | Distributed I/O |
| 1732, 1738 | Allen-Bradley | ArmorBlock / ArmorPOINT | Machine-mounted I/O |
| 1761 | Allen-Bradley | MicroLogix 1000 | Small controllers |
| 1762 | Allen-Bradley | MicroLogix 1200 | Small controllers and expansion |
| 1763 | Allen-Bradley | MicroLogix 1100 | Small controllers |
| 1764 | Allen-Bradley | MicroLogix 1500 | Controllers and processors |
| 1766 | Allen-Bradley | MicroLogix 1400 | Small controllers |
| 1747 | Allen-Bradley | SLC 500 | Processors and chassis |
| 1746 | Allen-Bradley | SLC 500 I/O | I/O modules |
| 1785 | Allen-Bradley | PLC-5 | Legacy processors |
| 1771 | Allen-Bradley | PLC-5 I/O | Legacy I/O modules |
| 2080 | Allen-Bradley | Micro800 | Controllers and plug-in modules |
| 2711P | Allen-Bradley | PanelView Plus | Operator terminals |
| 2711C | Allen-Bradley | PanelView Component | Operator terminals |
| 2711R | Allen-Bradley | PanelView 800 | Operator terminals |
| 22A, 22B | Allen-Bradley | PowerFlex 4 and 40 | AC drives |
| 20A, 20B | Allen-Bradley | PowerFlex 70 and 700 | AC drives |
| 20F, 20G | Allen-Bradley | PowerFlex 750-series | AC drives (753, 755) |
| 25A, 25B | Allen-Bradley | PowerFlex 523 and 525 | AC drives |
| 1305, 1336 | Allen-Bradley | Legacy Allen-Bradley AC drives (1305, 1336) | Legacy AC drives |
| 2198, 2094 | Allen-Bradley | Kinetix | Servo drives |
| 100C | Allen-Bradley | Contactors | IEC power contactors (100-C) |
| 140M | Allen-Bradley | Motor protection circuit breakers | Circuit protection |
| 1606 | Allen-Bradley | Power supplies | 24 V DC DIN-rail supplies |
| 1492 | Allen-Bradley | Terminal blocks | Terminals and wiring accessories |
| 1783 | Allen-Bradley | Stratix | Industrial Ethernet switches |
| DVP | Delta | DVP series | PLC controllers and expansion modules |
| AS2, AS3 | Delta | AS series PLC | Controllers and expansion modules |
| VFD | Delta | VFD series | AC drives (EL, E, B, M, MS300, C2000, CP2000 families) |
| DOP | Delta | DOP series | HMI operator panels |
| ASD | Delta | ASDA servo drives | Servo drives |
| ECM | Delta | ECMA servo motors | Servo motors |
| DTA, DTB, DTC | Delta | Temperature controllers | Process temperature controllers |
| DRP | Delta | DRP series | 24 V DC DIN-rail power supplies |
| TM221 | Schneider Electric | Modicon M221 | Compact controllers |
| TM241 | Schneider Electric | Modicon M241 | Logic controllers |
| TM251 | Schneider Electric | Modicon M251 | Logic controllers |
| TM258 | Schneider Electric | Modicon M258 | Logic controllers |
| TM3 | Schneider Electric | Modicon TM3 | Expansion I/O modules |
| TM5 | Schneider Electric | Modicon TM5 | Expansion I/O modules |
| BMXP34 | Schneider Electric | Modicon M340 CPUs | Controllers |
| BMX | Schneider Electric | Modicon M340 | Modules, racks and power supplies |
| BMEP58 | Schneider Electric | Modicon M580 CPUs | Controllers |
| BME | Schneider Electric | Modicon M580 | Modules and communication |
| 140C, 140D, 140A, 140X, 140E, 140N | Schneider Electric | Modicon Quantum | Legacy PLC modules140N modules are communication modules |
| TSX | Schneider Electric | Modicon Premium and Micro | Legacy PLC modules |
| TWD | Schneider Electric | Twido | Legacy compact PLCs |
| ATV | Schneider Electric | Altivar | AC drives (12, 312, 320, 340, 600, 900 families) |
| ATS | Schneider Electric | Altistart | Soft starters |
| LXM | Schneider Electric | Lexium | Servo drives |
| LC1, LC2 | Schneider Electric | TeSys contactors | Power contactors |
| LRD, LR3 | Schneider Electric | TeSys overload relays | Thermal and electronic overloads |
| GV2, GV3 | Schneider Electric | TeSys motor circuit breakers | Motor protection |
| XB4, XB5 | Schneider Electric | Harmony pushbuttons | Pushbuttons and selector switches |
| XCK, XCM | Schneider Electric | OsiSense limit switches | Position switches |
| XS, XT, XU | Schneider Electric | OsiSense sensors | Inductive, capacitive and photoelectric sensors |
| ABL | Schneider Electric | Phaseo | 24 V DC power supplies |
| HMI | Schneider Electric | Magelis | Operator panels |
| XBT | Schneider Electric | Magelis XBT | Older operator panels |
| RXM, RXG, RUM, RSB | Schneider Electric | Zelio relays | Plug-in and interface relays |
| SR2, SR3 | Schneider Electric | Zelio Logic | Smart relays |
How it works
Manufacturers encode the product family in the first characters of the part number. For example Siemens SIMATIC modules begin 6ES7 and Allen-Bradley ControlLogix modules begin 1756.
The prefix tells you the family, not the exact variant. The full number, including version and revision blocks, is what decides whether a replacement will fit.
The list is a guide to common prefixes, not a complete catalogue, and manufacturers change numbering over time. Send us the full number from the label and we will check.
Common questions
Why does the tool say 'S7-1200 or older S7-200'?
Both families use 6ES7 21x to 23x numbers. The product name on the label, or the rest of the order number, settles which you have. Do not order on the prefix alone.
My number isn't recognised. What now?
Send it anyway. Many parts, such as third-party and older components, are not in a short prefix list, and we can still check them.
Send us the part number
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