ABB AB-MODBUS-RTU-1 compact IP20 communication module providing a galvanically isolated Modbus RTU interface for compatible industrial equipment on RS-485 networks.
£428.92
The ABB AB-MODBUS-RTU-1, order code 1SFA899300R1003, is a compact Modbus RTU communication module designed to connect compatible ABB equipment to an RS-485 network. It supports supervision and control data exchange between industrial equipment and central automation systems.
The module provides a galvanically isolated network interface and supports Standard and Lite application drivers according to host-application requirements. Integrated network-status LED outputs help commissioning and maintenance personnel assess communication conditions efficiently.
With compact dimensions of 52 × 50 × 22 mm, an IP20 protection rating and a 3.3 V DC power requirement, the AB-MODBUS-RTU-1 is designed for installation within compatible industrial control equipment. Its robust construction and network conformity support coordinated automation and motor-control applications.
Modbus RTU is a vendor-neutral industrial communication protocol used for supervising and controlling automation equipment over RS-485 networks. It provides a practical means of exchanging operating commands, status information and process data between compatible field devices and central controllers.
The ABB AB-MODBUS-RTU-1 provides the interface required to connect compatible equipment to this network architecture. Its isolated interface, status indication and compact enclosure support straightforward integration and fault diagnosis within industrial control systems.
| Manufacturer | ABB |
|---|---|
| Model | AB-MODBUS-RTU-1 |
| Order code | 1SFA899300R1003 |
| Product type | Modbus RTU communication module |
| Communication protocol | Modbus RTU |
| Network type | RS-485 |
| Application drivers | Standard and Lite |
| Network interface | Galvanically isolated |
| Power requirement | 3.3 V DC ±0.15 V DC |
| Protection rating | IP20 |
| Operating temperature | −40 to +70 °C |
| Relative humidity | 5–95%, non-condensing |
| Status indication | Integrated network-status LED outputs |
| Dimensions (L × W × H) | 52 × 50 × 22 mm |
| Net weight | 0.042 kg |
| Package quantity | 1 piece |
| RoHS compliance | Yes |
| Certifications | UL and cUL |
The AB-MODBUS-RTU-1 enables compatible ABB equipment to exchange supervision and control data over a Modbus RTU network.
The module supports Modbus RTU communication over an RS-485 network.
The module requires a nominal supply of 3.3 V DC with a permitted tolerance of ±0.15 V DC.
Yes. The AB-MODBUS-RTU-1 has a galvanically isolated network interface.
The enclosed module measures 52 × 50 × 22 mm in length, width and height.
ABB industrial communication modules are used by automation engineers, panel builders and maintenance teams to integrate compatible equipment into coordinated control networks and production systems.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...