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KTX4 is a class I heating element. The class II is also available, see SKT4 device.

Functionality
The KTX 4 has 5 temperature settings that range from 30°C to 60°C. An electronic sensor guarantees precise temperature control. The device displays the currently set temperature level and indicates the status of the heating cycle or standby state. The KTX 4 is designed for use with the TS 1 heating element. The unique feature of the KTX range of heating elements is the Terma‑Split System. The Terma‑Split connector makes it possible to disconnect the TS 1 from the controller head. The KTX 4 is also equipped with actual heating time counter for energy consumption calculations.

Timer
An enhanced timer automatically turns the heating element off after 1, 2, 3 or 4 hours.

Remote Control
The heater is capable of wireless IR communication with an external wall controller, which enhances the use of the heating element with additional features.

Intelligent Building Systems
In case of power loss the KTX4 remembers its settings making it suitable for connection with external timers and intelligent building systems.

Safety
The KTX 4 is equipped with a ‘frost’ protection (ANTIFREEZE). It also has double protection against the element overheating as well as a safety feature that prevents damage in case of operation in a dry radiator. A device error or malfunction is identified by a display of error codes.

Design
Equipped with an easy to read single digit LED display in blue. The device has a screw connection and a version with a power cable masking and additional on/off switch under the cable housing is  available.

Colour
Available colours: white, silver, gold, chrome and black. The heating element can also be offered in any RAL colour and Terma special colours (including brass) subject to a minimum order of 100 pcs per colour.

Information for Customers

Please be reminded that Terma electric heating elements must only be used in systems properly filled with a heating medium (such as water or another approved fluid, as specified in the user manual)

Important: Do not switch on the heating element unless the heating rod is fully submerged in the heating medium. Operating the unit while dry can result in damage to the product.

Always check that the heating element is completely immersed before powering it on.


  • Technical parameters
  • 3D visualization
  • Downloads

Technical parameters

Features and functions

    • 5-step radiator temperature regulation in a range of 30-60 °C
    • ANTIFREEZE function, protection against temperatures below 5-7°C
    • Drying function – with setting of heating power and time (from 1h to 4h)
    • Actual heating time counter – allowing control over power consumption
    • IR module for communication with external controller
    • The Terma‑Split connector makes it possible to disconnect the heating element from the controller head.
    • Symmetrical housing (can be installed on the left or right side)

    Technical Specifications

    Power :
    230V/50Hz
    Available output power :
    120, 200, 300, 400, 600, 800, 1000W
    Protection devices :
    Klasa I
    Radiator connection :
    1/2”
    Ingress protection [IP] :
    IPx4: MS version; IPx5: cable version
    Model header Color Wattage L
    [mm]
    Product Code Configure Code
    KTX 4 White 120 325 WEKT401 T916*
    KTX 4 White 200 285 WEKT402 T916*
    KTX 4 White 300 310 WEKT403 T916*
    KTX 4 White 400 345 WEKT404 T916*
    KTX 4 White 600 375 WEKT406 T916*
    KTX 4 White 800 485 WEKT408 T916*
    KTX 4 White 1000 575 WEKT410 T916*
    KTX 4 White - WEKT4 K916*
    KTX 4 Chrome 120 325 WEKT401 TCRO*
    KTX 4 Chrome 200 285 WEKT402 TCRO*
    KTX 4 Chrome 300 310 WEKT403 TCRO*
    KTX 4 Chrome 400 345 WEKT404 TCRO*
    KTX 4 Chrome 600 375 WEKT406 TCRO*
    KTX 4 Chrome 800 485 WEKT408 TCRO*
    KTX 4 Chrome 1000 575 WEKT410 TCRO*
    KTX 4 Chrome - WEKT4 KCRO*
    KTX 4 Black 120 325 WEKT401 T905*
    KTX 4 Black 200 285 WEKT402 T905*
    KTX 4 Black 300 310 WEKT403 T905*
    KTX 4 Black 400 345 WEKT404 T905*
    KTX 4 Black 600 375 WEKT406 T905*
    KTX 4 Black 800 485 WEKT408 T905*
    KTX 4 Black 1000 575 WEKT410 T905*
    KTX 4 Black - WEKT4 K905*
    KTX 4 Gold 120 325 WEKT401 TGPO*
    KTX 4 Gold 200 285 WEKT402 TGPO*
    KTX 4 Gold 300 310 WEKT403 TGPO*
    KTX 4 Gold 400 345 WEKT404 TGPO*
    KTX 4 Gold 600 375 WEKT406 TGPO*
    KTX 4 Gold 800 485 WEKT408 TGPO*
    KTX 4 Gold 1000 575 WEKT410 TGPO*
    KTX 4 Gold - WEKT4 KGPO*
    KTX 4 Silver 120 325 WEKT401 TSMA*
    KTX 4 Silver 200 285 WEKT402 TSMA*
    KTX 4 Silver 300 310 WEKT403 TSMA*
    KTX 4 Silver 400 345 WEKT404 TSMA*
    KTX 4 Silver 600 375 WEKT406 TSMA*
    KTX 4 Silver 800 485 WEKT408 TSMA*
    KTX 4 Silver 1000 575 WEKT410 TSMA*
    KTX 4 Silver - WEKT4 KSMA*

    * Add the appropriate cabel type symbols here

    Technical drawings

    3D visualization

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    UK Sales Office & Drop Ship Distribution Centre
    Telephone: +44 (0) 1942 272 172

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