theben JM 4 T 24V KNX 4-Way Blind Actuator (4940260)

Description

Introduction

The theben JM 4 T 24V KNX (SKU 4940260) is a high-performance 4-way blind actuator engineered for controlling 24V drives across modern building automation systems. Designed for seamless integration into KNX networks, this device efficiently manages motorized blinds, shutters, sun and vision protection equipment, skylights, and ventilation flaps. This device is part of our KNX automation components range.

Engineered for DIN rail installation (4 module width), the unit operates on a mains voltage of 110 V AC – 240 V AC while drawing approximately 4 mA from the KNX bus line. Featuring low stand-by power consumption of approximately 0.5 W and integrated manual controls, it delivers reliable performance for system integrators and installers.

Key Features

• 4 independent control channels for 24V drives.
• DIN rail mounting (4 module width).
• KNX bus current consumption of ~4 mA.
• Mains operating voltage: 110 V AC – 240 V AC, 50 – 60 Hz.
• Output switching capacity rated at 6 A at 24 V DC.
• IP 20 type of protection and Protection Class II per EN 60 730-1.
• Screw terminal connection alongside standard KNX bus terminal.

Benefits

• Dedicated 24V Drive Control: Features 4 channels tailored specifically for 24V DC drives for motorized shading and ventilation.
• Local Manual Control: Integrated manual buttons permit testing and manual operation on the unit, even without an active KNX bus connection.
• Energy Efficient Operation: Consumes approximately 0.5 W in stand-by mode, reducing overall system power consumption.
• Flexible Wiring Connections: Accommodates solid wires up to 6 mm² and stranded wires with end sleeves up to 4 mm².
• SELV Compliance Support: Output features potential-free switching designed for SELV applications when the entire device switches SELV.

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
Stand-by consumption	~0.5 W
Number of channels	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
Output	Changeover contact, 6 A
Information Notice EU Data Act	PDF
CE declaration of conformity	PDF
Data sheet	PDF
Width	4
Installation type	DIN rail
Protection class	II according to EN 60 730-1
Type of connection	Terminal screws | Bus connection: KNX bus terminal
Switching capacity	6 A at 24 V DC
Switching output	Potential-free, for SELV, if the whole device switches SELV
Ambient temperature	-5°C … 45°C
Operating instructions	PDF
Type of protection	IP 20
Hand book	ZIP

Applications

• Automated positioning and control of 24V motorized window blinds, shutters, and sun protection systems.
• Precision actuation for 24V motorized skylights and ventilation flaps within residential or commercial KNX setups.

Installation Notes

• Mount the actuator on a standard DIN rail inside a distribution box meeting IP 20 enclosure requirements.
• Connect the mains operating voltage (110-240 V AC) and ensure screw terminal connections match wire cross-section guidelines (0.5 mm² to 6 mm² solid, or 0.5 mm² to 4 mm² stranded with end sleeve).
• Connect the KNX bus line using the provided bus terminal and verify potential-free SELV circuit requirements prior to operation.

Developer Resources

• Technical Data Sheet (PDF), Operating Instructions (PDF), and product Hand Book (ZIP) available for detailed project planning.
• CE Declaration of Conformity and EU Data Act Information Notice (PDF) provided for official compliance verification.

FAQ

How many outputs does the theben JM 4 T 24V KNX actuator feature?

The actuator provides 4 independent output channels designed specifically to control 24V drives for blinds, shutters, skylights, and ventilation flaps. Explore more theben KNX solutions for professional building automation projects.

Is manual control possible without an active bus connection?

Yes, manual operation switches are located directly on the device, allowing channels to be operated manually even when no KNX bus connection is present. For certificates and current technical files, refer to the official theben product page.

What is the switching capacity of the output contacts?

The changeover contact outputs are rated for a switching capacity of 6 A at 24 V DC.

What is the exact product model?

The order/model code for this page is 4940260. 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 JM 4 T 24V KNX (4940260) is a reliable 4-way blind actuator built for accurate control of 24V drives in modern smart building installations. Featuring local manual override, DIN rail mounting, and energy-conscious stand-by performance, it offers an essential hardware solution for professional KNX shading and ventilation projects. Installers and system integrators can review our dealer and project support options.