Hirschmann ACA22-M12-C (EEC) Technical Guide for Cordless M12 Switch Commissioning, Backup and Device Replacement
Hirschmann ACA22-M12-C (EEC) is an industrial auto-configuration adapter intended to support managed-switch commissioning, configuration backup and replacement. It stores switch configuration data and operating software so maintenance teams can prepare a controlled device-change workflow without treating a visually similar adapter as interchangeable.
Cordless form factor and identification
Unlike the cabled M12 version, Hirschmann ACA22-M12-C (EEC) is described as a cordless plug-in adapter. The compact format is approximately 23 × 23 × 65 mm and carries product code 942306001.

Reference image notice: this is a shared Hirschmann industrial-networking stock image. The visible device label may show another Hirschmann model, so it is not an exact photograph of Hirschmann ACA22-M12-C (EEC). Use the Type and product code on the quotation, packaging and delivered label for final identification.
Published operating and physical data
| Brand / family | Hirschmann / ACA auto-configuration adapter |
| Type | ACA22-M12-C (EEC) |
| Product code | 942306001 |
| Storage capacity | 512 MB |
| Connection | Cordless M12, USB 2.0 |
| Cable / format | Cordless plug-in design |
| Power supply | Powered through the USB interface |
| Operating temperature | -40 to +70 °C reference |
| Storage temperature | -40 to +85 °C reference |
| Relative humidity | 10–95%, non-condensing reference |
| Weight | 80 g |
| Protection class | IP67 |
| MTBF reference | 359 years |
Where a cordless adapter can simplify service
For a planned replacement, Hirschmann ACA22-M12-C (EEC) should be evaluated together with the managed switch, firmware, stored configuration, connector style, environmental conditions and commissioning procedure. Saving a configuration does not by itself validate network design or application compatibility.
Mechanical and EMC review
Belden data references 1 g vibration from 10–150 Hz, 15 g shock, 8 kV contact / 15 kV air ESD, 20 V/m electromagnetic immunity and EN 55032 Class A. Confirm the applicable edition and installation conditions in current documentation.
Pre-order verification list
- Confirm the full Type Hirschmann ACA22-M12-C (EEC) and product code 942306001.
- Match the physical interface: Cordless M12, USB 2.0; do not select only by storage capacity.
- Check that the target switch and its software release support the selected ACA generation.
- Record the existing switch model, firmware version, network role and current adapter label.
- Confirm whether IP67 and the listed temperature range suit the installation.
- Include quantity, destination, required delivery date and photographs in the RFQ.
Questions from maintenance and purchasing teams
What does Hirschmann ACA22-M12-C (EEC) store?
Belden documentation states that the adapter can retain two versions of configuration data and operating software from the connected switch.
Can it be selected only by connector appearance?
No. ACA21 and ACA22 products differ in storage generation and USB version, while M12 and USB variants also differ in connection and protection. Verify the complete Type and product code.
Does the adapter remove the need to check switch compatibility?
No. Compatibility, software release, configuration process and project approvals should be confirmed for the actual switch and network before ordering or replacement.
Project approval caution
Catalog approval references include DNV and EN 50121-4 references; project certifications must be checked. Approval applicability varies by hardware revision, installation country and project, so certificates should be checked against the exact product code before use.
Quote Hirschmann ACA adapters through HKXY
Specify Hirschmann ACA22-M12-C (EEC), product code 942306001, connected switch, software version and quantity. HKXY can keep cabled and cordless choices as separate quotation lines to avoid ambiguity.
Official catalog reference: Belden product page for Hirschmann ACA22-M12-C (EEC).