Siemens 6ES72141HG400XB0 — S7-1200 CPU 1214C Compact Controller
Overview
This entry describes the Siemens 6ES72141HG400XB0, a compact programmable logic controller in the S7-1200 family. The catalog identity indicates a DC/DC/RELAY variant with 14 digital inputs and 10 relay outputs, onboard Ethernet communication, and DIN Rail mounting. The operating temperature window is stated as 20 °C to 60 °C; however, the supply voltage range, input current draw, relay contact ratings, and digital input voltage thresholds are not present in the supplied data fields and must be verified against the official Siemens datasheet before any design or procurement decision.
Key parameters
| Parameter | Catalog value (as supplied) | Verification status |
|---|---|---|
| Brand | Siemens | Confirmed |
| MPN | 6ES72141HG400XB0 | Confirmed |
| Product family | S7-1200 CPU 1214C | Inferred from title prefix; confirm with datasheet |
| Supply voltage | Not in supplied fields | Verify on datasheet — selection must not proceed on electrical ratings until confirmed |
| Digital inputs | 14 – Digital | Stated; voltage level/threshold not supplied |
| Outputs | 10 – Relay | Stated; contact voltage/current ratings not supplied |
| Communications | Ethernet, RJ45 | Stated; protocol stack details not supplied |
| Memory | 100 kB | Stated; user memory vs. load memory split not supplied |
| Display | No Display | Stated |
| Expandable | Non-Expandable | Stated |
| Mounting | DIN Rail | Stated; enclosure clearance / side-by-side spacing not supplied |
| Ingress protection | IP20 | Stated |
| Operating temperature | 20 °C to 60 °C | Stated; confirm for full-load derating |
| Approvals | CE, cULus, FM, UL | Listed; Ex rating / hazardous location classification not in fields |
Verification callout
⚠ Critical: Supply voltage, digital input voltage levels, relay contact ratings (voltage/current), and communications protocol details are absent from the supplied catalog fields. Do not select this controller for a specific application or machine design until these electrical parameters are confirmed against the Siemens S7-1200 CPU 1214C datasheet and TIA Portal hardware configuration manual.
Integration and installation notes
The title designates this as a DC/DC/RELAY model, which in the S7-1200 ordering code schema generally indicates a 24 V DC input stage and relay output stage. The controller ships in bulk packaging with DIN Rail mounting. Enclosure thermal management should target the stated 20 °C–60 °C window; derating below 20 °C or above 60 °C is not characterized in the supplied data. Panel designers should reserve space for a TIA Portal programming interface (Ethernet) and confirm that the IP20 rating is suitable for the intended enclosure environment. Specific side-clearance requirements and potential for side-by-side mounting without derating are not specified in the supplied fields and should be drawn from the official installation manual.
Selection and substitution guidance
The 6ES72141HG400XB0 occupies the DC/DC/RELAY slot of the CPU 1214C lineup. Substituting a variant with a different output type (e.g., solid-state or AC/DC relay) changes the output architecture and may affect lifecycle (relay vs. solid-state), minimum load requirements, and short-circuit coordination. The related MPNs listed under alternates represent different voltage classes or output technologies; they are not drop-in equivalents without confirming mechanical fit, supply voltage, and output characteristics. Substitution should be validated with the Siemens TIA Portal hardware catalog and relevant machine safety analysis.
Similar catalog parts
The following alternates share at least one identical spec key with the primary part and are listed in descending similarity order. Only the two highest-similarity alternates are expanded; others are noted briefly.
| Parameter | 6ES72141HG400XB0 (primary) | 6ES72141AG400XB0 | 6ES72141BG400XB0 |
|---|---|---|---|
| Similarity | — | 0.92 | 0.92 |
| Digital inputs | 14 – Digital | 14 – Digital | 14 – Digital |
| Output type | 10 – Relay | 10 – Solid State | 10 – Relay |
| Memory | 100 kB | 100 kB | 100 kB |
| Communications | Ethernet, RJ45 | Ethernet, RJ45 | Ethernet, RJ45 |
| Expandable | Non-Expandable | Non-Expandable | Non-Expandable |
| IP rating | IP20 | IP20 | IP20 |
| Operating temp | 20 °C–60 °C | 20 °C–60 °C | 20 °C–60 °C |
| Supply voltage class | Not supplied | Not supplied | Not supplied |
Why 6ES72141AG400XB0 is similar
This part shares the same Siemens S7-1200 CPU 1214C base, identical digital I/O count, memory size, Ethernet port, and temperature window. The defining difference is output technology: it specifies solid-state outputs rather than relay outputs. The substitution trades electromechanical relay isolation for solid-state switching characteristics (no moving parts, different leakage current and on-resistance behavior). Supply voltage class and input voltage thresholds remain unstated in the data source and must be confirmed.
Why 6ES72141BG400XB0 is similar
This part matches the primary on output type (10 – Relay), digital I/O count, memory, communications, and operating temperature. The catalog title indicates AC/DC/RELAY, implying a different input supply voltage class than the DC/DC/RELAY designation of the primary. Mechanical fit and output contact ratings should align, but the supply voltage architecture differs. As with all alternates, verify against the official Siemens hardware configuration before substituting.
Other alternates (similarity 0.79–0.84) include the S7-1200 CPU 1215 family and CPU 1217C variants; these differ in memory size (125–150 kB), output type, operating temperature range, and encapsulation (Box vs. Bulk), and some carry additional country-specific approvals. These are not direct substitutes for the CPU 1214C DC/DC/RELAY configuration.
FAQ
What is the supply voltage range for 6ES72141HG400XB0? The data source does not provide a supply voltage field for this part. The DC/DC/RELAY designation in the title suggests 24 V DC input, but the exact acceptable range must be confirmed in the Siemens S7-1200 CPU 1214C datasheet.
Can 6ES72141HG400XB0 be expanded with additional I/O modules? The catalog fields list "Expandable: Non-Expandable," indicating the base unit does not support S7-1200 signal modules. Verify the exact signal board or communication module compatibility (if any) against the official hardware manual.
What relay contact ratings apply to the 10 relay outputs? The data source does not specify voltage or current ratings for the relay contacts. Relay outputs on the S7-1200 are typically rated for low-voltage DC or low-power AC switching; confirm the actual ratings in the datasheet before designing load circuits.