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ProfiHub / ProfiSwitch - Multichannel PROFIBUS repeaters

The reputable ProfiHub and ProfiSwitch family is a collection of multichannel PROFIBUS DP network components to create reliable star/tree networks and long multi-device spur lines.


This ensures that processes run more efficiently and unplanned downtime is reduced. They are utilized in many applications worldwide and available in different varieties to comply with the specific requirements of your company.


ProfiHubs and ProfiSwitches are equipped with galvanically isolated transparent repeaters. Behind each repeater a segment is created that is able to handle 31 devices with a cable length equal to the main bus. Each repeater prevents short circuits and other bus problems. The ProfiSwitch is also capable to customize the baudrate on each channel.


Application areas

Your benefits

Dynamic spur lines to devices

Star, tree and bus structured networks

Pull/Plug motor control centers

Barrier for non-galvanic isolated equipment

EMC-sensitive applications

Applications with device and cable stress


Hot slave insertion and removal during operation


Short circuit protection on each channel


Compact and robust construction


Status and error display (per channel)


Suitable for all DP cables


Straightforward networks


Extendable installations


ProfiSwitch X5 - PROFIBUS baudrate switch hub

With the ProfiSwitch X5, you have the ability to create baudrate customization per channel without any additional configuration. A simple rotary switch opens doors to a new landscape with reliable and efficient applications.


This solution modernizes your PROFIBUS network architecture for the next generation. This transparent hub outperforms all existing PROFIBUS repeaters and hubs on the market.

  • Transparent proxy to different baudrates

  • Cleaner network design

  • Cost saving

ProfiHub B5+R
(replaces standard B5)

Due to the demands for high-speed networks, PROFIBUS DP must comply with strict guidelines concerning spur lines. The ProfiHub B5+R is the perfect cost-efficient solution to bridge user’s requirements and create reliable star networks.


It is an essential component to obtain better control during maintenance and upgrading of the network. Note: B5+R replaces the standard PROCENTEC B5 unit, providing additional functionality with no physical design changes. The ProfiHub B5+R has the following unique features:

  • DB9 connector as well as a screw connector

  • Switchable termination on each segment

  • Backbone repeater

ProfiHub B2FO2+

The ProfiHub B4FO2+ is a cost-effective solution to link PROFIBUS fiber optic to RS 485 segments and vice versa.


It enables reliable applications where long cable distances and an isolation between devices and segments are required. It has the following unique features:

  • Transparent for all PROFIBUS DP protocols

  • Suitable for PROFIsafe and MPI

  • High-integrity telegram checking


The PROFIBUS DP B1 Repeater tackles the technical limitations of existing PROFIBUS repeaters. It does not have the frustrating short-circuit bug and the data is constantly monitored for glitches which are digitally filtered out. It has the following unique features:

  • Guarantees conveniently arranged networks

  • Compact design

  • Cost saving

Terminator T1 Pepper

The T1-Pepper provides customizable (active) termination for PROFIBUS segments that do not comply with the standard RS 485 impedance. With rotary switches the impedance of the termination can be set.

ProfiHub A5

Does your PROFIBUS DP installation require several long branches between various devices and backbone structures with star/tree segments? The ProfiHub A5 is a robust network component for PROFIBUS DP installations and enables it in IP 65 applications. With this component you ensure that your complex network in a potentially dusty or moist environment operates well with minimum downtime. Why choose for the ProfiHub A5?

  • Can handle up to 31 devices

  • Meet de requirements for PROFIBUS DP installations

  • With this product, you can create reliable, flexible and object-oriented DP installations

The ProfiHub B5+RD is identical to the regular ProfiHub B5 family. However, it is equipped with an additional integrated micro ProfiTrace diagnostic unit. The ProfiHub offers a PROFIBUS DP slave device to transfer bus statistics and device event information to the PLC/DCS system. This allows you to reduce unexpected downtime to a minimum. This solution has the following unique features:

  • 6 segments

  • Diagnostic information easy to view via the software

  • Built-in PROFIBUS DP slave for transferring diagnostic data

ProfiHub B5+RD
ProfiHub B2+R - 3 Segment redundant PROFIBUS DP Repeater

The ProfiHub B2+R enables wide-ranging RS 485 star/tree/bus segments and long spur lines for PROFIBUS DP installations in IP 20 environments. It is a straightforward and robust network component made to design flexible and object oriented networks.


When redundancy is enabled, the ProfiHub B2+R is transformed to an extremely reliable and cost-saving redundant repeater solution. What makes this repeater unique?

  • Two Isolated repeater channels (3 segments)

  • 9.6 Kbps .. 12 Mbps (auto detection)

  • Redundancy and compliant with ABB RLM01

ProfiHub B4FO2+

The ProfiHub B4FO2+ is a cost-effective solution to link PROFIBUS fiber optic to multiple RS 485 segments and vice versa. It enables reliable applications where long cable distances and an isolation between devices and segments are required.The massed junction of copper segments reduce expensive fiber optic couplers and create an object-oriented overview for the end user. It has the following unique features:

  • Fiber optic to multi RS 485 Segments coupler

  • Point-to-point, bus- and star configurations

  • Cost-effective solution

Terminator T1

The T1 Terminator provides active termination for PROFIBUS segments which are based on RS 485. This component enables you to switch off or remove the last devices on a segment without disturbing the bus communication. This way you reduce the risk of faults and thus potential downtime. The redundant power supply of the T1 increases reliability even more. The on-board DB9 connector can be used as hookup point for diagnostic tools. Why should you choose for the T1 Terminator?

  • Screw terminals as well as DB9 connector

  • Redundant power supply

  • Supports all PROFIBUS RS 485 protocols

D1 Repeater

The robust PROFIBUS D1 repeater is the ideal product for creating reliable PROFIBUS DP networks in demanding IP 66 environments where persistent dust and water are constantly present.

ProfiHub A5 - with 110V/230V power unit

Like ProfiHub A5 but with integrated 110/230VAC power supply hence no need for a separate 24 VDC power supply.

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