Description
Introduction
The ABB IPS/S3.5.1 is a KNX Gateway designed to connect the KNX bus with an Ethernet network and encrypt communication. It uses the KNXnet/IP Secure protocol for communication by tunneling, supporting secure IP-based access for KNX projects.

For consultants, installers, integrators, and procurement teams, this model is specified as Extended Product Type IPS/S3.5.1 with Product ID 2CDG110204R0011. KNX devices can be programmed via LAN using ETS, and the device provides 5 Secure Tunneling Servers for this and further clients.
Key Features
- Brand and model: ABB IPS/S3.5.1.
- Catalog description: IPS/S3.5.1 IP Interface Secure, MDRC.
- Product category: KNX Gateway.
- Communication interface: Ethernet.
- Compatible bus systems: KNX (TP) and KNX (IP).
- Degree of protection: IP20.
- Number of LEDs: 3.
- Manual operation: No.
Benefits
- Connects a KNX bus with an Ethernet network for IP-based KNX project access.
- Encrypts communication using the KNXnet/IP Secure protocol for tunneling.
- Supports programming of KNX devices via LAN using ETS.
- Provides 5 Secure Tunneling Servers for ETS and further clients.
- Allows IP addressing by fixed IP configuration or by DHCP server assignment.
- Offers flexible power supply options via 12…30 V DC or PoE according to IEEE 802.3af class 1.
Technical Specifications
Applications
- KNX installations requiring a secure interface between the KNX bus and an Ethernet network.
- ETS-based programming of KNX devices via LAN.
- Projects where KNXnet/IP Secure tunneling is specified.
- Installations requiring multiple secure tunneling access points, with 5 Secure Tunneling Servers available.
Installation Notes
- Verify that the project specification, BOQ, and ETS requirements call for ABB IPS/S3.5.1 and Product ID 2CDG110204R0011 before ordering.
- Plan the network configuration according to the project requirement: the IP address can be fixed or received from a DHCP server.
- Provide power according to the documented options: 12…30 V DC or PoE in accordance with IEEE 802.3af class 1.
- Confirm that the installation location and enclosure requirements are suitable for the stated IP20 degree of protection.
- Use the official instructions and manuals reference 2CDG941182P0001 for installation and commissioning details.
Developer Resources
- Manufacturer product page: https://new.abb.com/products/en/2CDG110204R0011/ips-s3-5-1
- Product ID: 2CDG110204R0011.
- Instructions and Manuals reference: 2CDG941182P0001.
- Declaration of Conformity – CE reference: 9AKK107991A5979.
- EAN: 4016779016414.
FAQ
What does the ABB IPS/S3.5.1 connect?
It connects the KNX bus with an Ethernet network.
Which secure communication method is used by this device?
The ABB IPS/S3.5.1 uses the KNXnet/IP Secure protocol for communication by tunneling.
Can KNX devices be programmed via LAN using this interface?
Yes. KNX devices can be programmed via the LAN using ETS.
How many Secure Tunneling Servers are available?
The device provides 5 Secure Tunneling Servers for ETS and further clients.
How can the ABB IPS/S3.5.1 receive power?
Power supply is available via 12…30 V DC or via PoE according to IEEE 802.3af class 1.
What is the exact product model?
The order/model code for this page is IPS/S3.5.1. Match it against project documents before purchase.
Conclusion
The ABB IPS/S3.5.1 IP Interface Secure, MDRC is a KNX Gateway for securely connecting KNX TP and KNX IP environments through Ethernet using KNXnet/IP Secure tunneling. It is suitable for projects requiring LAN-based ETS programming, 5 Secure Tunneling Servers, IP address flexibility, and power via 12…30 V DC or PoE.













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