



The ABB TB521-ARCNET terminal base is a fundamental component for the AC500 V2 distributed automation PLC system, purpose-built to facilitate high-speed ARCNET networking in industrial control loops. This base unit provides two dedicated slots for communication modules and integrates dual serial interfaces (RS232/RS485) via D-SUB/Coax/Terminals, enabling seamless data exchange with field devices and higher-level controllers. Engineered for 24 V DC operation and rated IP20, the TB521-ARCNET ensures reliable performance across a wide temperature range of 0°C to +60°C during operation and -40°C to +70°C in storage. Each unit is 100% original, new, and shipped globally with minimal lead time, making it a trusted choice for system integrators and maintenance teams.
| Specification | Details |
|---|---|
| Product Type | AC500 V2 Terminal Base with ARCNET |
| Model | TB521-ARCNET |
| Function | For AC500 V2; 2 slots for communication modules; ARCNET interface; 2 serial interfaces RS232/RS485 |
| Communication Interface | D-SUB / Coax / Terminals |
| Input Voltage Type | DC |
| Supply Voltage | 24 V DC |
| Degree of Protection | IP20 |
| Ambient Air Temperature (Operation) | 0 ... +60 °C |
| Ambient Air Temperature (Storage) | -40 ... +70 °C |
| Product Net Weight | 0.187 kg |
| Product Net Depth / Length | 28 mm |
| Product Net Height | 135 mm |
| Product Net Width | 123.5 mm |
| Gross Weight | 0.246 kg |
| Package Level 1 Dimensions (L x W x H) | 147 mm x 131 mm x 40 mm |
| Package Level 1 Units | 1 carton |
| Minimum Order Quantity | 1 piece |
| Order Multiple | 1 piece |
| Selling Unit of Measure | piece |
| Made To Order | No |
| Product Main Type | TB521 |
| Product Name | Distributed Automation PLCs |
| CN8 Code | 85389091 |
| eClass | 27-24-22-92 |
| ETIM 8 | EC000810 - PLC mounting rack |
| UNSPSC | 32151703 |
| SCIP | c171af37-8456-4dee-b15c-03da3448dd42 Germany (DE) |
| WEEE B2C / B2B | Business To Business |
| WEEE Category | 5. Small Equipment (No External Dimension More Than 50 cm) |

What Does Our Clients Say
Mitsubishi MR-J4
Laura Navas
Great product!
2019/12/01
Keyence sensor
EQDR SALES
Original and fast!
2020/02/22