Eight-channel relay output module for SIMATIC S7-300 field load control.
The Siemens 6ES7322-1HF01-0AA0 is a SIMATIC S7-300 SM 322 digital output module with eight relay outputs. The outputs are electrically isolated in groups of two and connect through a 20-pin front connector. Siemens specifies rated load ranges of 24 to 120 V DC and 48 to 230 V AC, with up to 2 A for supported resistive loads. Typical power loss is 3.2 W. The module is intended for switching devices such as solenoid valves, contactors, motor starters and signal lamps. Before ordering, verify the complete suffix, rack fit, front connector, load voltage, current and switching duty.
| Item | Stockoems Commercial Information |
|---|---|
| Product Condition | Original new |
| Availability | In stock |
| Warranty | With 1 year warranty |
| Shipping | Worldwide shipping options available |
Condition, availability and warranty are Stockoems commercial terms and are not manufacturer commitments.
| Parameter | Verified Value |
|---|---|
| Manufacturer | Siemens |
| Complete Part Number | 6ES7322-1HF01-0AA0 |
| Product Type | SIMATIC S7-300 SM 322 Digital Output Module |
| Digital Outputs | 8 relay outputs |
| Electrical Isolation | Outputs isolated in groups of two |
| Rated Load Voltage, DC | 24 to 120 V DC |
| Rated Load Voltage, AC | 48 to 230 V AC |
| Resistive Output Current | Up to 2 A at supported voltages |
| Front Connector | 20-pin |
| Typical Power Loss | 3.2 W |
| Official Life Cycle | PM400: Announcement of product phase-out; product phase-out since 01.10.2023 |
The module receives control data and power through the compatible S7-300 rack system.
Eight relay channels are electrically isolated in groups of two.
The relay contacts switch verified AC or DC field devices within rated limits.
| Check Point | Required Verification |
|---|---|
| Complete suffix | Match 6ES7322-1HF01-0AA0 character for character. |
| PLC system | Confirm the target rack and CPU belong to a compatible SIMATIC S7-300 configuration. |
| Front connector | Verify the required 20-pin connector and field wiring assignment. |
| Load rating | Check AC or DC voltage, current, load type and external circuit protection. |
| Switching duty | Review operating frequency and relay contact life for the application. |
It is a SIMATIC S7-300 SM 322 digital output module with eight relay outputs.
The eight relay outputs are electrically isolated in groups of two.
Siemens specifies 24 to 120 V DC and 48 to 230 V AC rated load ranges.
No. Siemens specifies no integrated short-circuit protection for these relay outputs.
Siemens lists PM400: Announcement of product phase-out, with product phase-out since 01.10.2023; this is not stated as Discontinued.
Send us the complete part number, required quantity, destination country and product label photos. Our team will check availability, condition, compatibility requirements and shipping options.
Our service workflow supports buyers and engineers from suffix verification through inspection, packaging, shipping documentation and after-sales communication.
| Gate | Service Check | What We Review |
|---|---|---|
| Identity | Model and suffix verification | Complete article number, suffix, manufacturer label and package label. |
| Condition | Condition confirmation | Visual condition, sealing, accessories and visible handling marks. |
| Compatibility | Technical compatibility review | S7-300 rack, CPU, 20-pin front connector, channel grouping, field voltage and load-current requirements. |
| Evidence | Product and label photo confirmation | Full product, connector, label, packaging and supplied accessory photos. |
| Protection | Protective packaging | Surface protection, cushioning, moisture control and outer-carton handling. |
| Logistics | Worldwide shipping and shipment tracking | Destination, shipping option, tracking information and delivery coordination. |
| Documents | Customs documentation | Commercial documents prepared according to confirmed order and destination details. |
| After Sales | Written warranty terms and return authorization process | Written terms, return steps and after-sales response channels. |
Ask for the complete model and suffix on the quotation, clear product and label photos, written condition, compatibility checks, traceable shipping details and written warranty terms.
Compare exact article-number control, inspection evidence, packaging standards, customs-document capability, return authorization, communication speed and after-sales responsibility.
Request complete label photos and verify the target system, interface, revision, cable, mounting arrangement and configuration requirements against the machine design.
Warning signs include incomplete suffixes, reused photos, inconsistent labels, vague condition descriptions, unsupported compatibility claims, missing return terms and promises of unverified stock quantities or delivery dates.
Share the full part number, quantity, destination and label photos for a documented service review.
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