theben RM 4 U KNX 4-Way Switching Actuator

Description

Introduction

The theben RM 4 U KNX (Item no.: 4940223) is a 4-way switching actuator designed for KNX system integration. Belonging to the FIX1 series, it provides reliable switching control across 4 independent channels for lighting and electrical loads. This device is part of our KNX system components range.

Operating on KNX bus voltage (≤4 mA) alongside a line supply of 110 V AC – 240 V AC at 50 Hz – 60 Hz, this actuator features manual operation directly on the device, allowing local switching even without an active bus connection.

Key Features

• 4 independent output channels with NO contact configuration (16 A, 3 A).
• LED switching status display for every channel.
• Manual control function available on the hardware level without bus connection.
• Operating voltage range of 110 V AC – 240 V AC at 50 – 60 Hz.
• Protection class II rated design.
• Handles up to 3680 W resistive load.

Benefits

• Direct manual operation on the device enables channel toggling even in the absence of a bus connection.
• Individual LED status displays for each channel provide clear visual feedback during testing and operation.
• Low standby power consumption of approximately 0.3 W helps reduce baseline system energy usage.
• Capable of managing high peak loads with an inrush current capacity of max. 800 A / 200 µs.
• Flexible wiring support for solid conductors up to 6 mm² and stranded wire with end sleeves up to 4 mm².

Technical Specifications

Specification	Value
Operating voltage KNX	Bus voltage, ≤4 mA
Operating voltage	110 V AC – 240 V AC, 50 Hz – 60 Hz
Frequency	50 – 60 Hz
Fluorescent lamp load (conventional) parallel-corrected	1300 W (140 µF)
Fluorescent lamp load (conventional) not corrected	2000 VA
Fluorescent lamp load (electronic ballast)	1200
Energy saving lamps	300
LED lamp < 2 W	55
LED lamp 2-8 W	600
LED lamp > 8 W	600
Inrush current	max. 800 A / 200 µs
Voltage output	240 V AC
Stand-by consumption	~0.3 W
Max. cable cross section	Solid wire: 0.5 mm² (Ø 0.8) to 6 mm² | Stranded wire with end sleeve: 0.5 mm² to 4 mm²
Number of channels	4
Type of contact	NO contact, 16 A, 3 A
Resistive load	3680
Protection class	II
Information Notice EU Data Act	PDF
CE declaration of conformity	PDF

Applications

• Switching control for up to 4 independent lighting or electrical load circuits in KNX automation systems.
• Integration into distribution boards requiring local manual channel operation and visual LED feedback.

Installation Notes

• Connect solid conductors from 0.5 mm² (Ø 0.8) to 6 mm², or stranded wire with end sleeves from 0.5 mm² to 4 mm².
• Ensure the operating supply matches 110 V AC – 240 V AC, 50 Hz – 60 Hz, with KNX bus current ≤4 mA.

Developer Resources

• CE Declaration of Conformity PDF
• Information Notice EU Data Act PDF

FAQ

Can the channels on the theben RM 4 U KNX be operated manually?

Yes, manual operation is available directly on the device for each channel, even without a KNX bus connection. Explore more theben automation devices for professional building automation projects.

How many channels does the theben RM 4 U KNX feature?

The RM 4 U KNX features 4 switching channels with individual LED status displays. For certificates and current technical files, refer to the manufacturer technical documentation.

What is the stand-by power consumption of this device?

The stand-by power consumption is approximately 0.3 W.

What is the exact product model?

The order/model code for this page is 4940223. Match it against project documents before purchase.

Who is the manufacturer?

This product is manufactured by theben.

Where can I find the official technical documentation?

Use the manufacturer product page and datasheets for this exact SKU. Always verify the latest revision before specifying the product.

Conclusion

The theben RM 4 U KNX (SKU: 4940223) delivers efficient 4-channel switching control with manual local override and individual LED channel indication, suitable for KNX building automation systems. Installers and system integrators can review our dealer and project support options.