Description
Note: Many products are not yet listed. Please contact us for more product information. Our supply channels are constantly expanding, and we currently have 20 stable shared supply channels. Please confirm the model, product, price, and all other necessary information with customer service before placing an order. We offer new, refurbished, and used products, and prices are adjusted according to the year of the item you require.
3) Key Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer | ABB |
| Model | UAA326A04 |
| Order Number | HIEE300024R4 |
| Alternative Type | UA-A326-A04 |
| Additional Reference | HI903818-310 |
| Product Category | Industrial I/O / Control Interface Module |
| Signal Processing | Host-system dependent |
| I/O Channel Count | Requires documentation verification |
| Input Signal Type | Requires documentation verification |
| Output Signal Type | Requires documentation verification |
| Communication Interface | Requires host-system verification |
| Power Supply | Verify against original nameplate |
| Mounting | Confirm from original assembly |
| Hardware Revision | Check physical identification label |
Technical note: Do not use unverified online claims such as 16 DI / 4 AI / 8 DO / 2 AO, 220 V input, 10 A output, or 100 Mbps Ethernet as confirmed specifications. These figures are not consistently supported by model-specific documentation. <Cite refs={[“turn664178search4″,”turn664178search5″,”turn664178search3”]}/>
4) Product Introduction — Anti-Template
The ABB UAA326A04 HIEE300024R4 is a legacy industrial control module associated with ABB’s specialized electronic control hardware. Its identification is also linked to the designation UA-A326-A04 and reference HI903818-310 in spare-parts records.
For maintenance procurement, the important question is not simply whether the replacement carries the same ABB model number. The original system, signal architecture, connector arrangement, and hardware revision must also be checked. This is particularly important when replacing older control electronics in power-generation and industrial installations.

UAA326A04

UAA326A04

UAA326A04

UAA326A04

UAA326A04
5) QC, Procurement & Logistics SOP
1) Incoming Identification
Before shipment, verify:
- Full model: UAA326A04
- ABB part number: HIEE300024R4
- Additional marking: UA-A326-A04 / HI903818-310, where applicable
- Serial number and hardware revision
- PCB condition and component integrity
- Connector positions and pin condition
- Evidence of corrosion, overheating, or previous repair
Photograph the actual unit and identification labels for customer confirmation.
2) Electrical and Functional Verification
Testing should be performed using the correct host equipment or an approved compatible test setup.
- Inspect power and grounding connections.
- Verify the specified input supply.
- Check startup and diagnostic indications.
- Verify the relevant I/O or signal-interface functions.
- Check communication with the host system, if applicable.
- Inspect for abnormal heating or unstable operation.
A basic power-on test is not sufficient to establish full functional compatibility.
3) Configuration and Compatibility Review
Before replacement, document:
- Original module identification and revision
- Host equipment model
- Rack or installation position
- Existing wiring and connector arrangement
- Signal mapping and configuration
- Relevant system fault messages
Do not assume that the replacement will automatically inherit the original configuration.
4) ESD Protection and Packaging
Use ESD-safe handling and protective packaging. Secure connectors against impact, protect exposed electronic components, and use shock-absorbing material inside a rigid outer carton.
For international shipments, include appropriate moisture protection and ensure that the module cannot move freely during transportation.
5) Global Logistics and Export Compliance
Confirm the agreed Incoterms rule, destination, shipment method, lead time, insurance, and customs documentation.
Suggested commercial description:
ABB UAA326A04 Industrial Control / I/O Module, Part Number HIEE300024R4
Country of origin and customs classification should be confirmed using the actual unit and applicable export documentation.
6) Technical Pitfalls & Integration Warnings
1) Confirm the Exact Product Identity
Different suppliers describe this model as an I/O module, control processor, communication module, or protection-related assembly. These descriptions should not be treated as equivalent. Confirm the physical identification and host-system documentation before ordering. <Cite refs={[“turn664178search0″,”turn664178search2″,”turn664178search8”]}/>
2) Do Not Assume a Fixed I/O Channel Configuration
Channel counts and signal types published by unrelated listings are not sufficiently consistent. Verify the actual terminal assignment and electrical interface before connecting field wiring.
3) Check the Full Part Number
Match UAA326A04 with HIEE300024R4. Similar ABB model prefixes or different suffixes do not establish direct interchangeability.
4) Verify Power Requirements
Do not apply 24 V DC or another assumed supply without checking the correct technical documentation. Incorrect supply voltage can damage the module and connected equipment.
5) Check Hardware Revision and System Compatibility
Confirm the revision, host-system generation, installation position, and configuration requirements. A module that physically fits may still fail to communicate or process signals correctly.
6) Observe ESD and Safe Replacement Procedures
Isolate the equipment as required by the original maintenance procedure. Use ESD protection and verify signal states and system diagnostics before returning the equipment to operation.
7) Frequently Asked Questions
Q1: What is the ABB UAA326A04 HIEE300024R4?
It is a legacy ABB industrial electronic module identified in specialist spare-parts records as an I/O module, with additional designation UA-A326-A04 and reference HI903818-310. <Cite refs={[“turn664178search10″,”turn664178search0”]}/>
Q2: Is the same as ?
They are associated identifiers for the same requested assembly. The complete physical label should still be checked before ordering.
Q3: How many I/O channels does it have?
A reliable model-specific channel count has not been established. Confirm the channel configuration using the applicable ABB documentation.
Q4: Is it compatible with ABB UNITROL systems?
Some third-party listings associate this model with ABB excitation-control applications, but exact system compatibility should be confirmed against the original equipment documentation before substitution. <Cite refs={[“turn664178search2″,”turn664178search4”]}/>
Q5: What power supply does the module require?
The exact input voltage and current requirements should be confirmed from the original nameplate or matching technical manual.
Q6: Can another ABB UAA326 series module replace it?
Not automatically. Check the full suffix, hardware revision, signal configuration, connectors, and host-system compatibility.
Q7: What information should I provide when requesting a quotation?
Provide the complete model and order number, clear photos of the front and rear labels, connector details, and the host equipment model. This helps verify the correct spare before shipment.
