ABB UD/S4.210.2.1 KNX Universal Dimming Actuator 4 Channel 210W

The ABB UD/S4.210.2.1 KNX Universal Dimming Actuator is a professional 4-channel lighting control device designed for intelligent KNX building automation systems. Optimised for dimming retrofit LED lamps (LEDi), this versatile actuator also supports incandescent lamps, 230V halogen lamps, low-voltage halogen lighting with conventional or electronic transformers, and dimmable energy-saving halogen lamps.

Designed for residential, commercial, and professional KNX installations, the ABB UD/S4.210.2.1 provides reliable and flexible lighting control through advanced load detection, configurable output channels, manual operation, integrated bus coupling, and comprehensive testing and diagnostic functions.

With four independent dimming channels and the ability to connect outputs in parallel to increase available power, the UD/S4.210.2.1 provides a flexible solution for modern lighting automation projects requiring precise and dependable dimming performance.

Universal KNX Lighting Control

The ABB UD/S4.210.2.1 has been developed to provide smooth and reliable dimming control across a wide range of lighting applications.

Ideal applications include:

✅ KNX smart home lighting systems
✅ Residential lighting automation
✅ Commercial building lighting control
✅ Office and workplace lighting solutions
✅ Hospitality and hotel automation systems

The actuator provides accurate lighting adjustment while allowing installers to configure the system to suit different project requirements.

Universal LED & Lighting Compatibility

The ABB UD/S4.210.2.1 supports multiple lighting technologies, making it suitable for both modern LED installations and traditional lighting systems.

Compatible loads include:

✅ Retrofit LED lamps (LEDi)
✅ Incandescent lamps
✅ 230V halogen lamps
✅ Dimmable energy-saving halogen lamps
✅ Low-voltage halogen lamps with conventional transformers
✅ Low-voltage halogen lamps with electronic transformers

Automatic load detection identifies connected loads for simplified commissioning and can be deactivated when manual configuration is required.

4 Channel Universal Dimming Performance

The ABB UD/S4.210.2.1 provides four independent dimming outputs for flexible lighting management.

Key features include:

✅ Four-channel universal dimming control
✅ Separate N-connection per channel
✅ Parallel connection of outputs to increase output power
✅ Outputs can be connected in parallel in any configuration
✅ Minimum load requirement of only 2W

This flexible output design allows the actuator to adapt to a wide range of lighting installations and power requirements.

Advanced KNX Commissioning Features

The ABB UD/S4.210.2.1 has been designed to simplify installation, programming, and system maintenance.

Features include:

✅ Integrated KNX bus coupler
✅ Manual operation directly on the device
✅ Operation possible without KNX bus voltage
✅ Manual operation available in an unprogrammed status
✅ Programming possible without applied 230V supply voltage
✅ Fast ETS parameter setting using copyable channel templates

These functions provide installers with greater flexibility during commissioning and system configuration.

Intelligent Testing & Diagnostic Functions

The ABB UD/S4.210.2.1 includes advanced testing and diagnostic capabilities to support professional KNX installations.

Benefits include:

✅ Extensive test functions
✅ Diagnostic functions using the ABB i-bus Tool
✅ Easier commissioning and troubleshooting
✅ Improved system maintenance

These features help ensure reliable operation and efficient setup of KNX lighting systems.

Flexible Output Configuration

The ABB universal dimming actuator provides adaptable output management for different installation requirements.

Advantages include:

✅ Flexible channel configuration
✅ Increased output capability through parallel connection
✅ Support for multiple transformer technologies
✅ Suitable for retrofit and new-build lighting projects

The result is a versatile KNX dimming solution designed for modern intelligent lighting control.

Technical Specifications

☑️ Brand: ABB
☑️ Model: UD/S4.210.2.1
☑️ Product Type: KNX Universal Dimming Actuator
☑️ Technology: KNX
☑️ Number of Channels: 4
☑️ Integrated Bus Coupler: Yes
☑️ Minimum Load: 2W

☑️ Incandescent and Halogen Lamps:
4 x 210 W/VA to 1 x 600 W/VA

☑️ Dimmable 230V LEDi – Trailing Edge Control:
4 x 210 W/VA to 1 x 600 W/VA

☑️ Dimmable 230V LEDi – Leading Edge Control:
4 x 80 W/VA to 1 x 200 W/VA

☑️ Inductive L-Transformers With LED / Low Voltage Halogen Lamps:
4 x 210 W/VA to 1 x 600 W/VA

☑️ Electronic C-Transformers With LED / Low Voltage Halogen Lamps:
4 x 210 W/VA to 1 x 600 W/VA

☑️ Electronic LC-Transformers With LED / Low Voltage Halogen Lamps:
4 x 80 W/VA to 1 x 200 W/VA

☑️ Automatic Load Detection: Yes (Can Be Deactivated)
☑️ Manual Device Operation: Yes
☑️ Parallel Output Connection: Yes

Ideal Applications

🏠 KNX smart home lighting systems
🏢 Commercial building automation
🏨 Hotels and hospitality projects
💡 LED retrofit lighting control
🏗️ Professional KNX installation projects
🏬 Office, retail, and public building lighting systems

Why Choose The ABB UD/S4.210.2.1?

🚀 Professional 4-channel KNX universal dimming actuator

🎯 Optimised for retrofit LED lamps and compatible with multiple lighting technologies

⚡ Automatic load detection simplifies installation and setup

🛠️ Flexible parallel output connection increases application possibilities

🎛️ Advanced ETS programming and diagnostic functions support professional commissioning

🏆 Reliable ABB KNX technology for intelligent lighting automation

Additional Information

🌟 ABB professional KNX universal dimming solution

🏆 Designed for flexible and reliable lighting control systems

🛠️ Suitable for LED, halogen, incandescent, and transformer-based lighting applications

🎛️ Integrated KNX bus coupler for easy system integration

📦 Supplied as an individual ABB UD/S4.210.2.1 KNX universal dimming actuator

🚚 FREE delivery on orders over £100

📞 Contact us for project quotations, technical support, and trade pricing