ABB DI820 3BSE008512R1 Digital Input 120 Vac | Replacement, Equivalent & Selection Guide
The ABB DI820 (Part No. 3BSE008512R1) is a 120 Vac digital input module designed for use within ABB’s S800 I/O system, compatible with AC800M and AC800S process automation controllers. It provides reliable field-level signal acquisition for high-voltage AC environments, making it a preferred choice in power generation, oil & gas, and heavy industrial applications.
At Konmask.com, we specialize in sourcing original, tested, and certified ABB automation components — including the DI820 — with fast global shipping and full traceability documentation.
Technical Specifications
- Part Number: 3BSE008512R1
- Module Type: Digital Input (DI)
- Input Voltage: 120 Vac
- Number of Channels: 16 channels
- Input Signal Standard: IEC 61131-2 Type 1
- Isolation: Galvanic isolation between field and system bus
- Backplane Bus: S800 I/O Modulebus
- Compatible Controllers: AC800M, AC800S
- Operating Temperature: 0°C to +55°C
- Mounting: DIN rail via S800 I/O station
- Certification: CE, UL, cUL
- Weight: Approx. 300 g
Compatible Replacement & Equivalent Models
If the DI820 3BSE008512R1 is unavailable or you are evaluating alternatives, the following models offer compatible or equivalent functionality:
- ABB DI810 (3BSE008508R1) — 24 Vdc digital input, same S800 form factor; suitable when field voltage is DC rather than 120 Vac
- ABB DI811 (3BSE008510R1) — 24 Vdc, 16-channel DI; direct functional equivalent for DC applications
- ABB DI821 (3BSE008514R1) — 230 Vac digital input; use when field voltage is 230 Vac instead of 120 Vac
- ABB DI830 (3BSE013210R1) — 24 Vdc, 32-channel DI; higher density alternative for DC systems
- Third-party compatible modules — Contact Konmask for vetted third-party S800-compatible DI modules with equivalent I/O mapping
Note: Always verify firmware compatibility and I/O station slot requirements before substituting modules. Konmask engineers can assist with compatibility validation.
Why Choose the Original DI820 3BSE008512R1
- Native 120 Vac field compatibility — eliminates the need for signal converters in North American AC field wiring environments
- Plug-and-play with AC800M/S — zero configuration overhead; recognized automatically by ABB Control Builder
- Galvanic isolation — protects controller backplane from field-side transients and surges
- Proven reliability — widely deployed in critical infrastructure with documented MTBF exceeding 10 years in field conditions
- Full ABB ecosystem support — firmware updates, diagnostics, and redundancy configurations supported natively
Typical Applications
- Power plant distributed control systems (DCS)
- Oil & gas upstream/downstream process automation
- Water and wastewater treatment plant SCADA
- Chemical and petrochemical plant safety instrumented systems (SIS)
- Pulp and paper mill process control
- Mining and minerals processing automation
System Compatibility
- Controller: ABB AC800M (PM851, PM856, PM860, PM861, PM864, PM866), AC800S
- I/O Station: S800 I/O — TB820V2, TB840A, TB845
- Communication: Modulebus (optical or electrical)
- Engineering Tool: ABB Control Builder M (CBM), Symphony Plus
- Redundancy: Supported via redundant I/O station configurations
Selection Guide
Use the table below to select the correct ABB S800 digital input module for your application:
| Model | Part No. | Input Voltage | Channels | Best For |
|---|---|---|---|---|
| DI810 | 3BSE008508R1 | 24 Vdc | 16 | Standard DC field devices |
| DI820 | 3BSE008512R1 | 120 Vac | 16 | North American AC field wiring (this product) |
| DI821 | 3BSE008514R1 | 230 Vac | 16 | European/international AC field wiring |
| DI830 | 3BSE013210R1 | 24 Vdc | 32 | High-density DC applications |
Need help selecting? Contact our engineering team at [email protected] with your system configuration details.
Quality Assurance & Sourcing
- Source: Authorized distributors and certified secondary market channels
- Inspection: Each unit undergoes visual inspection, functional power-on test, and firmware version verification
- Documentation: Certificate of conformity, test report, and traceability records available on request
- Warranty: 12-month replacement warranty against manufacturing defects
- Anti-counterfeit: All ABB modules verified against ABB serial number database where applicable
How to Order
- Confirm your controller model and S800 I/O station type
- Verify field voltage (120 Vac confirms DI820 is correct)
- Add to cart or contact us for bulk/project pricing
- Provide your shipping address — we ship DDP/DAP worldwide
- Receive tracking number within 1 business day of order confirmation
📧 [email protected] | 📞 +0086 19859288691
Replacement & Compatibility FAQ
Q: Can the DI820 replace a DI810 directly?
A: No — the DI810 is a 24 Vdc input module. The DI820 is rated for 120 Vac. Substituting without field wiring changes will damage the module or create a safety hazard.
Q: Is the DI820 compatible with AC800F controllers?
A: No. The DI820 is designed for the S800 I/O system used with AC800M/S. AC800F uses a different I/O architecture (S900).
Q: Can I use the DI820 in a redundant I/O configuration?
A: Yes, when paired with a redundant I/O station (e.g., TB840A), the DI820 supports redundant Modulebus operation.
Q: What is the lead time for the DI820 3BSE008512R1?
A: In-stock units ship within 1–3 business days. For out-of-stock situations, typical lead time is 2–4 weeks. Contact us for current availability.
Q: Do you provide a test report with the module?
A: Yes. A functional test report and certificate of conformity are available upon request at no additional charge.
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Contact: [email protected] | +0086 19859288691
