



The ABB TU551-CS31 is a dedicated interface terminal unit within the renowned S500 family, engineered to facilitate seamless integration of distributed I/O modules via the CS31 protocol. This unit is a critical component for modern industrial automation systems, providing a robust and reliable bridge between field devices and control networks. Designed with precision screw terminals, the TU551-CS31 ensures secure and durable electrical connections, making it an ideal choice for applications requiring high signal integrity and ease of maintenance. Its compact form factor and IP20 protection allow for straightforward installation in standard electrical cabinets, while its 24 V DC power supply and broad operating temperature range guarantee consistent performance in demanding environments. Whether used in new installations or as a replacement part, this ABB terminal unit delivers the reliability and functionality expected from a world-class automation component.
| Specification | Value |
|---|---|
| Product Type | Interface Terminal Unit |
| Model | TU551-CS31 |
| Protocol | CS31 |
| Terminal Type | Screw Terminals |
| Supply Voltage | 24 V DC |
| Number of Analog Configurable I/Os | 0 |
| Degree of Protection | IP20 |
| Ambient Air Temperature (Operation) | 0 ... +60 °C |
| Ambient Air Temperature (Storage) | -40 ... +70 °C |
| Product Net Weight | 0.236 kg |
| Product Net Depth / Length | 28 mm |
| Product Net Height | 135 mm |
| Product Net Width | 67.5 mm |
| Gross Weight | 0.266 kg |
| Package Level 1 Dimensions (L x W x H) | 147 mm x 78 mm x 40 mm |
| Package Level 1 Units | 1 carton |
| Product Main Type | TU551 |
| Product Name | Distributed Automation I/Os |
| WEEE Category | 5. Small Equipment (No External Dimension More Than 50 cm) |
| WEEE B2C / B2B | Business To Business |
| eClass | 27-24-22-92 |
| ETIM 8 | EC000810 - PLC mounting rack |
| UNSPSC | 32151703 |
| CN8 (Customs Tariff) | 85389091 |
| Minimum Order Quantity | 1 piece |
| Order Multiple | 1 piece |
| Selling Unit of Measure | piece |
| Made To Order | No |

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