Description
Product Overview
The ABB PU410 3BSE056478R1 is an external communication unit developed for integrating legacy Advant Master control systems with ABB System 800xA. It functions as a Real-Time Accelerator (RTA), supporting communication between the 800xA Connectivity Server and an AC 400 controller through the MasterBus 300 network. This makes it relevant to facilities retaining existing Advant control hardware while using System 800xA for supervisory access and engineering functions.
Unlike a conventional PLC CPU or rack-mounted I/O module, the PU410 is a separate communication box. Its function depends on the host computer, the Advant Master network, and the associated connectivity configuration. Available technical descriptions specify Ethernet connectivity on the server side and an MB300 interface on the controller side. The documented network arrangement uses point-to-point links, so the existing cabling and connection topology should be checked before installation.
For maintenance and procurement, the complete identifier PU410 3BSE056478R1 is important because ABB lists the product as obsolete and identifies 3BSE051826R1 as its replacement product. That replacement reference should be treated as a starting point for verification, not automatic proof of drop-in compatibility. Confirm the installed System 800xA version, Connectivity Server configuration, MB300 network requirements, and applicable ABB migration documentation before substituting hardware.
Product Introduction
When integrating an established Advant Master installation with System 800xA, the communication path between the server and MB300 network is a key part of system availability. The ABB PU410 3BSE056478R1 provides this RTA communication function for compatible AC 400 architectures.
Before replacing the unit, verify the network topology, connection cabling, and system software configuration. ABB lists a replacement product number, but the complete system arrangement should be validated before returning communication services to operation.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | ABB |
| Model | PU410 |
| Order Number | 3BSE056478R1 |
| Product Type | RTA Communication Box |
| System Family | System 800xA / Advant OCS |
| Connected Controller Family | Advant Master AC 400 |
| Network | MasterBus 300 (MB300) |
| Server Interface | Ethernet |
| MB300 Interface | RJ45 Ethernet connection |
| Connection Arrangement | Point-to-point; confirm the required topology |
| Net Weight | Approximately 0.39 kg |
| Replacement Product ID | 3BSE051826R1 |
| Product Status | Listed as obsolete in ABB product data |
| Supply Requirements | Verify from the exact unit label and applicable ABB manual |
| Operating Temperature | Confirm from the applicable technical documentation |
ABB’s product data confirms the product identity and replacement number. Interface and topology details are described in available technical listings; confirm wiring and electrical requirements against the installed system documentation.

PU410 3BSE056478R1
Related Products
- ABB PU410K01 — 3BSE051826R1: Replacement product listed by ABB for the obsolete PU410. Verify compatibility with the installed system before ordering.
- ABB System 800xA Connectivity Server: Host-side system component that connects to the RTA unit.
- ABB Advant Master AC 400: Controller family connected through the MB300 network.
- ABB MasterBus 300 (): Legacy communication network used by Advant Master systems.
- ABB PU515A RTA hardware: A related RTA option referenced in descriptions of redundant Connectivity Server arrangements; confirm the exact architecture before considering it as an alternative.
Frequently Asked Questions
Q1. What is the ABB 3BSE056478R1 used for?
It connects a System 800xA Connectivity Server with an Advant Master AC 400 system through MasterBus 300.
Q2. Is a PLC power supply?
No. ABB identifies it as a communication box for . Do not select it as a substitute for a controller power supply.
Q3. What replaces the obsolete ?
ABB product data lists 3BSE051826R1, designated PU410K01, as the replacement product. Verify the exact configuration and migration requirements before ordering.
Q4. Can I connect it through an ordinary Ethernet switch?
Available technical descriptions specify point-to-point communication links and indicate that switches or hubs are not supported in the documented connection path. Follow the topology specified for the installed configuration.
Q5. Can the unit be replaced without changing system configuration?
Do not assume so. Check the Connectivity Server setup, interface arrangement, cabling, and relevant software configuration before replacing the unit.
Q6. What should I verify before purchasing a used or surplus unit?
Check the complete part number, nameplate, connector condition, physical damage, and available test documentation. Ask whether the unit has been tested in a compatible RTA/ environment.
Procurement recommendation: Specify ABB 3BSE056478R1 when matching an existing installation. If sourcing the replacement 3BSE051826R1, validate it against the installed System 800xA and Advant Master architecture rather than relying on the replacement number alone.
