theben RMG 8 S KNX 8-Way Switching Actuator Base Module (4930220)

Description

Introduction

The theben RMG 8 S KNX (4930220) is a versatile 8-way switching actuator base module designed for KNX building automation. Functioning as a MIX2 base unit, it enables flexible project design by allowing system integrators to scale switching capacity up to a maximum of 24 channels through compatible MIX2 extension modules. This device is part of our KNX system devices range.

Operating on mains supply voltage from 110 V AC to 240 V AC at 50–60 Hz and drawing a minimal KNX bus operating current of ≤4 mA, the RMG 8 S KNX delivers high operational efficiency. With an ultra-low standby power consumption of approximately 0.3 W and Class II electrical protection, it ensures reliable control across commercial and residential KNX installations.

Key Features

• 8 independent switching channels integrated into a MIX2 base module architecture.
• KNX bus powered control section operating at ≤4 mA.
• Supports LED lighting loads up to 55 W (< 2 W) and energy-saving lamps up to 300 W.
• Handles conventional fluorescent loads up to 2000 VA (uncompensated) and 1300 W / 140 µF (parallel-corrected).
• Electronic ballast fluorescent lamp load rating up to 1200 W.
• Class II protection class rating with a maximum capacity loss of 6.4 W.
• Technical parameters valid starting from serial number 1318XXXXX.

Benefits

• Modular Expansion: Functions as a MIX2 base module capable of upgrading to 24 channels using MIX2 extensions.
• Energy Efficient: Minimal stand-by consumption of approximately 0.3 W reduces standby loss.
• Flexible Cable Compatibility: Accommodates solid wires up to 6 mm² and stranded wires with end sleeves up to 4 mm².
• High Switching Capacity: Provides NO contacts rated for 16 A and 3 A with up to 3680 W resistive load capability.
• Wide Operating Range: Operates reliably on 110 V AC to 240 V AC at 50 Hz to 60 Hz.

Technical Specifications

Specification	Value
Values valid as of serial number	1318XXXXX
Stand-by consumption	~0.3 W
Capacity loss max.	6.4
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	8
Type of contact	NO contact, 16 A, 3 A
Resistive load	3680 W
Protection class	II
Tender text	DOC
Information Notice EU Data Act	PDF
CE declaration of conformity	PDF
Data sheet	PDF
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 W
Energy saving lamps	300 W
LED lamp < 2 W	55 W

Applications

• Commercial building automation systems requiring modular lighting and switching channel expansion up to 24 channels.
• Residential KNX installations needing efficient central load switching with ultra-low standby power consumption.

Installation Notes

• Connect solid wires between 0.5 mm² (Ø 0.8) and 6 mm², or stranded wires with end sleeves from 0.5 mm² to 4 mm².
• Ensure input operating power supply matches 110 V AC – 240 V AC at 50 Hz – 60 Hz before powering the module.
• Verify that installation specifications comply with units carrying serial numbers 1318XXXXX and higher.

Developer Resources

• Data sheet PDF
• CE declaration of conformity PDF
• Tender text DOC
• Information Notice EU Data Act PDF

FAQ

How many channels can the theben RMG 8 S KNX base module control?

The RMG 8 S KNX features 8 channels on the base module and can be expanded to a maximum of 24 channels using MIX2 extension modules. Explore more theben building automation products for professional building automation projects.

What is the operating voltage range for this switching actuator?

The module operates on a mains voltage of 110 V AC to 240 V AC (50-60 Hz) and connects to the KNX bus with a current consumption of ≤4 mA. For certificates and current technical files, refer to the official product documentation.

What load ratings apply to lighting control with the RMG 8 S KNX?

It supports up to 3680 W for resistive loads, 2000 VA for uncorrected conventional fluorescent lamps, 1200 W for electronic ballasts, 300 W for energy saving lamps, and 55 W for LED lamps under 2 W.

What is the exact product model?

The order/model code for this page is 4930220. 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 RMG 8 S KNX (4930220) 8-way switching actuator base module provides an efficient and adaptable foundation for intelligent KNX control systems. Installers and system integrators can review our dealer and project support options.

With its 24-channel MIX2 expandability, low standby consumption, and broad switching load profile, it is an essential choice for modern commercial and residential automation projects.