DEVIflex™ 6T
Electric Underfloor Heating Cable
DEVIflex™ 6T is a high-quality twin conductor electric underfloor heating cable designed for reliable indoor floor heating applications. Featuring a full 360° screen and a durable outer sheath (non-UV stable), it offers robust mechanical protection and dependable performance across a wide range of floor constructions.
Its round cable profile supports fast, straightforward installation, making it suitable for installers, specifiers, and construction professionals seeking an efficient electric underfloor heating solution. The cable is supplied with an integrated cold lead featuring solid conductors for easier installation and a clearly visible connection point that helps reduce installation errors.
For safe operation and optimal energy management, the heating cable must always be installed together with an appropriate thermostat. Proper temperature control helps prevent overheating and enables energy-efficient operation tailored to the building's heating requirements.
With its low linear output (W/m), DEVIflex™ 6T is suitable for well-insulated and low-energy buildings, including applications in Nearly Zero Energy Buildings (NZEB), where heating demand is reduced through modern building design.
Every cable undergoes comprehensive quality control procedures, including testing of ohmic resistance, high-voltage performance, and material quality. This quality-focused manufacturing process supports long-term reliability and is backed by the DEVIwarranty™ floor warranty when installed according to applicable requirements.
In addition, DEVIflex™ 6T is covered by an Environmental Product Declaration (EPD), providing transparent information about the product's environmental impacts across its life cycle stages.
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Key Benefits
- Fast and easy installation
- Suitable for multiple indoor heating applications
- Robust twin conductor cable construction
- 360° screened design for enhanced protection
- Quality-tested for reliable long-term performance
- Compatible with thermostat-based temperature control
- Suitable for low-energy and NZEB building applications
- Supported by DEVIwarranty™
- EPD documentation available
Specification
| Name | Value |
|---|---|
| Supply voltage [V] AC | 230 V |
| Cable type | Twin conductor |
| Cable output [W/m] | 6 W/m |
| Operating temperature [°C] [max] | 80 °C |
| Non operating temperature [°C] [Max] | 90 °C |
| Cable diameter [mm] | 6.9 mm |
| Deformation strength [N] | >1500 N |
| Pulling strength [N] | >500 N |
| Conductor insulation | XLPE |
| Outer sheath | PVC |
| Outer sheath colour | Red |
| Cable screen | Alufoil 100% |
| Cold lead conductor quantity | 3 |
| Cold lead length [m] | 2.3 m |
| Cold lead quantity | 1 |
| Cold lead size [mm²] | 1.5 mm² |
| Cold lead type | DTCL |
| Installation temperature [°C] [Min] | -5 °C |
| Bending diameter [mm] [Min] | 50 mm |
| Element IP Class | IPX7 |
Warranty scope
Compliance
Standard compliance: • IEC60800:2009
GARAN Label
Header
Content
| Item no. | Cable length [m] | Heating output [W] | Cable resistance [Ohm] | Cold lead conductor quantity | Cable output [W/m] | Supply voltage [V] AC | Cold lead length [m] | Cold lead size [mm²] |
|---|---|---|---|---|---|---|---|---|
| 140F1200 | 30.000 m | 180 W | 293.4000 Ohm | 3 | 6 W/m | 230 V | 2.3 m | 1.5 mm² |
| 140F1201 | 40.000 m | 250 W | 211.6000 Ohm | 3 | 6 W/m | 230 V | 2.3 m | 1.5 mm² |
| 140F1202 | 50.000 m | 310 W | 170.0000 Ohm | 3 | 6 W/m | 230 V | 2.3 m | 1.5 mm² |
| 140F1203 | 60.000 m | 345 W | 152.4000 Ohm | 3 | 6 W/m | 230 V | 2.3 m | 1.5 mm² |
| 140F1204 | 70.000 m | 415 W | 128.1000 Ohm | 3 | 6 W/m | 230 V | 2.3 m | 1.5 mm² |
| 140F1205 | 80.000 m | 500 W | 105.6000 Ohm | 3 | 6 W/m | 230 V | 2.3 m | 1.5 mm² |
| 140F1206 | 90.000 m | 540 W | 98.1000 Ohm | 3 | 6 W/m | 230 V | 2.3 m | 1.5 mm² |
| 140F1207 | 100.000 m | 635 W | 83.6000 Ohm | 3 | 6 W/m | 230 V | 2.3 m | 1.5 mm² |
| 140F1208 | 115.000 m | 720 W | 74.0000 Ohm | 3 | 6 W/m | 230 V | 2.3 m | 1.5 mm² |
| 140F1209 | 129.000 m | 770 W | 68.9000 Ohm | 3 | 6 W/m | 230 V | 2.3 m | 1.5 mm² |
| 140F1210 | 140.000 m | 870 W | 60.8000 Ohm | 3 | 6 W/m | 230 V | 2.3 m | 1.5 mm² |
| 140F1211 | 160.000 m | 915 W | 57.9000 Ohm | 3 | 6 W/m | 230 V | 2.3 m | 1.5 mm² |
| 140F1212 | 180.000 m | 1095 W | 48.2000 Ohm | 3 | 6 W/m | 230 V | 2.3 m | 1.5 mm² |
| 140F1213 | 190.000 m | 1160 W | 45.6000 Ohm | 3 | 6 W/m | 230 V | 2.3 m | 1.5 mm² |
| 140F1214 | 200.000 m | 1260 W | 42.0000 Ohm | 3 | 6 W/m | 230 V | 2.3 m | 1.5 mm² |