Siemens S7-1500 DQ Module (6ES75225EH000AB0)
6ES75225EH000AB0 — solid-state output family positioning
The 6ES manufacturer prefix places this squarely in Siemens automation hardware; within the S7-1500 catalog the 25EH segment designates high-density solid-state output modules in the 125 VDC / 48 VAC range. The trailing 000AB0 variant code reflects the standard package configuration for this channel count.
All eight alternates share the same DIN-rail form factor, SIMATIC S7-1500 compatibility, and ROHS3 status—differing primarily in output technology (TRIAC vs relay vs solid-state), channel density, and voltage rating.
Functional and electrical specifications
| Spec | Value |
|---|---|
| Output count and type | 16 — solid-state |
| Voltage range | 24–48 VAC / 125 VDC |
| Series | SIMATIC S7-1500 |
| Compatible backplane | S7-1500 rack (refer to Siemens docs for specific CPU pairing) |
| Mounting | DIN rail |
| Operating temperature | 0°C to 60°C |
| Encapsulation | Box |
| Product status | Active |
| ROHS | Compliant (ROHS3) |
Signal integrity note
Solid-state outputs eliminate contact wear but impose restrictions on load type. Verify inductive load suppression per the S7-1500 system manual if driving contactors or solenoids.
Thermal considerations
60°C ceiling is adequate for enclosed cabinet mounting without forced airflow, but dense multi-module racks may require fan assistance or spacing clearance—consult the S7-1500 equipment manual for layout thermal guidance.
Comparison — Siemens S7-1500 output modules
Readers must qualify all candidates against their specific load type and voltage requirements before selection.
| Spec | 6ES75225EH000AB0 | 6ES75225FH000AB0 | 6ES75225HH000AB0 | 6ES75221BH010AB0 |
|---|---|---|---|---|
| Output type | Solid-state | TRIAC | Relay | Solid-state |
| Channels | 16 | 16 | 16 | 16 |
| Voltage rating | 24–48 VAC / 125 VDC | 230 VAC | 24 V | 24 V |
| Operating temp | 0°C–60°C | 0°C–60°C | 25°C–60°C | 30°C–60°C |
| Package | Box | Box | Bulk | Bulk |
| Similarity | — | 1.0 | 1.0 | 1.0 |
- 6ES75225FH000AB0 shares the 16-channel density and box packaging but switches to TRIAC topology suited for pure AC loads at higher mains voltage; not a drop-in electrical replacement for DC or mixed setups.
- 6ES75225HH000AB0 offers relay output technology in a bulk package; electromechanical contacts handle higher inrush but carry finite mechanical lifecycle considerations.
- 6ES75221BH010AB0 is a 24 VDC solid-state variant in bulk packaging—different voltage class, not a direct substitute for the 125 VDC / 48 VAC rating.