theben HMT 12 S KNX Heating Actuator (4900374)

Description

Introduction

The theben HMT 12 S KNX (Item no. 4900374) is a highly capable 12-channel heating actuator engineered for precision control of heating circuits equipped with thermal actuators. Operating on a 230 V AC – 240 V AC supply voltage, this device enables versatile control by switching 24 V DC actuators or driving continuous 0–10 V DC control signals across modern KNX automation projects. This device is part of our KNX Actuators range.

Designed for direct wall installation, the unit integrates control for up to two heating circuit pumps and incorporates automatic flow temperature adjustment logic. By calculating the maximum actuating value based on real-time requirements, it ensures optimal energy efficiency with minimal standby power consumption.

Key Features

• 12 output channels for controlling thermal heating actuators.
• Supports switching 24 V DC or permanently 0–10 V DC actuator drives.
• Integration for up to 2 heating circuit pumps.
• Flow temperature adjustment based on automated actuating value calculations.
• KNX bus powered electronics with ≤10 mA bus current consumption.
• Spring terminals for simplified electrical installation.
• Wall installation mounting type with IP 20 rating.
• Class II protection according to EN 60 730-1 specifications.

Benefits

• 12 independent channels allow comprehensive multi-zone hydronic heating control from a single device.
• Flexible output capabilities supporting switching 24 V DC or continuous 0–10 V DC signals.
• Integrated control management for up to two heating circuit pumps reduces external hardware needs.
• Automatic calculation of actuating values optimizes flow temperatures to enhance overall building energy efficiency.
• Low stand-by power consumption of ≤1 W supports energy-conscious building standards.
• Spring terminal connections facilitate fast, secure, and reliable electrical wiring.

Technical Specifications

Specification	Value
Operating voltage KNX	Bus voltage, ≤10 mA
Operating voltage	230 V AC – 240 V AC
Frequency	50 – 60 Hz
Stand-by consumption	≤1 W
Number of channels	12
Hand book	PDF
Information Notice EU Data Act	PDF
CE declaration of conformity	PDF
Data sheet	PDF
Installation type	Wall installation
Type of connection	Spring terminals
Ambient temperature	-5°C … 50°C
Operating instructions	PDF
Type of protection	IP 20
KNX-Database (Single Product)	ZIP
KNX-Database (all products)	ZIP
Protection class	II according to EN 60 730-1

Applications

• Centralized control of multi-zone underfloor heating and hydronic radiator circuits in KNX automation networks.
• Energy-optimized HVAC control systems requiring integrated pump switching and dynamic flow temperature regulation.

Installation Notes

• Mount the unit via wall installation in dry indoor environments adhering to the IP 20 protection rating.
• Operate within the defined ambient temperature range of -5°C to 50°C.
• Connect main power supply (230 V AC – 240 V AC, 50-60 Hz) and KNX bus connections using standard spring terminals.

Developer Resources

• Downloadable KNX Database ZIP files available for single product configuration or full product catalog integration in ETS.
• Complete product documentation available including official Data Sheet, Handbook, Operating Instructions, and CE Declaration of Conformity in PDF format.

FAQ

How many heating circuits can the theben HMT 12 S KNX control?

The theben HMT 12 S KNX (4900374) includes 12 independent channels designed to control up to 12 heating circuits. Explore more theben automation devices for professional building automation projects.

What type of actuators are compatible with this heating actuator?

It controls thermal actuators operating via switching 24 V DC or continuous 0–10 V DC signal modes. For certificates and current technical files, refer to the official theben product page.

Can this device manage system heating pumps directly?

Yes, the unit supports the integration and control of up to two heating circuit pumps.

What is the enclosure rating and mounting method?

The actuator features an IP 20 protection rating and is designed for wall installation.

What is the exact product model?

The order/model code for this page is 4900374. Match it against project documents before purchase.

Who is the manufacturer?

This product is manufactured by theben.

Conclusion

The theben HMT 12 S KNX (Item no. 4900374) is an advanced 12-channel solution for climate control in KNX smart building installations. With support for flexible 24 V DC or 0–10 V DC actuators and multi-pump integration, it provides system integrators with a reliable and energy-efficient actuator solution. Installers and system integrators can review our professional project support options.