Sixteen isolated relay outputs for 5 A load switching in SIMATIC S7-400 control systems.
Siemens 6ES7422-1HH00-0AA0 is an SM 422 digital output module for SIMATIC S7-400 systems. It provides sixteen isolated relay outputs and supports AC or DC load circuits within the documented voltage and current limits.
The relay architecture suits switching duties where electrical isolation and broad load-voltage coverage are required. Load type, switching frequency, external protection and thermal derating must be checked for the installed rack.
| Manufacturer | Siemens |
| Complete Part Number | 6ES7422-1HH00-0AA0 |
| Product Description | SIMATIC S7-400 SM 422 isolated digital output module, 16 relay outputs |
| Product Lifecycle (PLM) | PM300: Active Product |
| PLM Effective Date | Product phase-out since 01.10.2025 |
| Country of Origin | Germany |
| Module family | SIMATIC S7-400 SM 422 |
| Digital outputs | 16 isolated relay outputs |
| DC load-voltage range | 1 to 60 V DC; rated value 60 V DC |
| AC load-voltage range | 2 to 264 V AC; rated value 230 V AC |
| Rated output current | 5 A for signal 1 |
| Minimum load current | 11 mA |
| Backplane-bus current | Maximum 1 A at 5 V DC |
| Typical power loss | 4.5 W |
| Short-circuit protection | No |
| Maximum lamp load | 60 W |
| Maximum switching frequency | 10 Hz resistive; 1 Hz inductive or lamp load; 20 Hz mechanical |
| Output-group total current | 10 A up to 40 °C; 5 A up to 60 °C without fan subassembly |
| Relay endurance | 100,000 operating cycles for AC-15/DC-13; 3,000,000 mechanical |
| Net weight | Approximately 0.879 kg |
Control documented AC or DC loads through isolated relay contacts.
Add sixteen contact outputs to a verified SIMATIC S7-400 rack configuration.
Separate load circuits while observing output-group and insulation requirements.
The module provides sixteen isolated relay outputs.
The documented ranges are 1–60 V DC and 2–264 V AC.
The rated value for signal 1 is 5 A, subject to group-current and temperature limits.
No. Suitable external circuit protection must be included.
Maximum values depend on load type: 10 Hz resistive, 1 Hz inductive or lamp, and 20 Hz mechanical.
Siemens states PM300: Active Product; product phase-out since 01.10.2025.
Send the complete part number, required quantity, destination and installed-system configuration.
Independent checks for identification, configuration fit and international spare-parts logistics.
We check the full 6ES7422-1HH00-0AA0 marking, label condition and exact suffix.
System family, companion hardware, wiring and engineering details are reviewed before quotation.
Condition, warranty scope, protective packing and worldwide delivery details are confirmed.
Send the complete part number, required quantity, destination and installed-system configuration.
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Send the complete part number, required quantity, destination and installed-system configuration.
