theben BM 6 T KNX 6-Way Binary Input Module (4940230)

Description

Introduction

The theben BM 6 T KNX (4940230) is a versatile 6-way binary input module engineered for integration into modern KNX building control environments. Designed for standard DIN rail mounting with a 4-module width, this FIX1 series device incorporates 6 floating universal inputs capable of detecting switching states across a wide voltage range from 10 V DC up to 240 V AC. This device is part of our KNX system devices range.

Equipped with internal auxiliary voltage generation (~12 V DC / 18 mA SELV), the BM 6 T KNX can power potential-free contact inputs directly without external supply units. Additional device features include 2 internally operable channels via local buttons, 6 diagnostic status LEDs, low standby power consumption of approximately 0.3 W, and IP 20 protection.

Key Features

• 6 floating universal wide-range binary inputs (10-240 V AC/DC).
• 2 internal channels operable directly using local pushbuttons.
• Auxiliary SELV voltage output (~12 V DC, 18 mA).
• Compact DIN rail housing occupying 4 width modules.
• KNX bus voltage operation (≤4 mA) alongside mains power connection (110-240 V AC, 50-60 Hz).
• Maximum supported input wiring distance of up to 100 meters.
• Protection class II compliant according to EN 60 730-1 with IP 20 rating.

Benefits

• Supports flexible signal detection with 6 floating wide-range voltage inputs operating from 10 V DC to 240 V AC.
• Integrated auxiliary voltage source (12 V DC / 18 mA, SELV) allows direct connection of floating contacts.
• Low energy consumption with standby power usage rated at approximately 0.3 W.
• Clear localized diagnostics provided by 6 status LEDs reflecting real-time input states.
• Enhanced functional capability with 2 extra channels controllable directly via device buttons.

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
Voltage inputs	10 V DC – 240 V AC 2 mA
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
Output	12 V DC/18 mA, SELV
Display	6 LEDs for status indication at the input
Suitable for SELV	Yes, if all inputs are connected with SELV
Information Notice EU Data Act	PDF
CE declaration of conformity	PDF
Data sheet	PDF
Width	4 modules
Max. cable length	100 m
Installation type	DIN rail
Protection class	II according to EN 60 730-1
Type of connection	KNX bus terminal
Ambient temperature	-5°C … 45°C
Operating instructions	PDF
Type of protection	IP 20

Applications

• Integration of conventional pushbuttons, switches, or window/door contacts into a KNX system.
• Status monitoring of floating contacts and wide-range mains voltage signals within DIN rail distribution panels.

Installation Notes

• Install on a standard DIN rail in a secure distribution board with an ambient operating temperature between -5°C and 45°C.
• Connect to the KNX network using the standard KNX bus terminal connector.
• For SELV-compliant installations, ensure that all connected input circuits strictly adhere to SELV voltage standards.
• Supports solid conductor cross-sections from 0.5 mm² to 6 mm² and stranded wire with end sleeves from 0.5 mm² to 4 mm².

Developer Resources

• Official theben BM 6 T KNX product web documentation
• Downloadable CE declaration of conformity, operating instructions, and technical data sheet

FAQ

What input voltage range does the theben BM 6 T KNX accept?

The 6 binary inputs handle universal voltages ranging from 10 V DC up to 240 V AC. Explore more products from theben for professional building automation projects.

Can the module power floating contacts without an external supply?

Yes, the device generates an internal auxiliary SELV output of approximately 12 V DC (18 mA) for floating contacts. For certificates and current technical files, refer to the official theben documentation.

How wide is the device on the DIN rail?

The module has a width of 4 DIN rail modules.

What is the maximum allowable cable length for the inputs?

The maximum input cable length supported by this device is 100 meters.

What is the exact product model?

The order/model code for this page is 4940230. Match it against project documents before purchase.

Who is the manufacturer?

This product is manufactured by theben.

Conclusion

The theben BM 6 T KNX (4940230) delivers precise binary signal integration for KNX systems, combining flexible floating inputs, SELV contact power, and manual test features into a robust DIN-rail form factor. Installers and system integrators can review our professional project support options.