- Heating Cables
- Self-Regulating Heating Cables
- Self-Regulating Heating Cable HTM
- Self-Regulating Heating Cable HTA
- Self-Regulating Heating Cable HTP
- Self-Regulating Heating Cable BTC
- Self-Regulating Heating Cable BTCe
- Self-Regulating Heating Cable BTX
- Self-Regulating Heating Cable BTXe
- Self-Regulating Heating Cable CTE
- Self-Regulating Heating Cable VTM
- Self-Regulating Heating Cable VTL
- Self-Regulating Heating Cable VTR
- Self-Regulating Heating Cable LTM
- Self-Regulating Heating Cable LTL
- Self-Regulating Heating Cable LTR
- Series-Resistance Heating Cables
- Mineral-insulated cables
- Self-Regulating Heating Cables
- Connection Technology
- Junction Boxes
- Explosion Proof Polyester Enclosure
- Junction Box ECO CB
- Junction Box for Heating Cable with Mineral Insulation
- Junction Box for Light Indication
- Junction Box for Power Cables Connection
- Junction Box for Self-Regulating Heating Cables to Power Connection
- Junction Box for Self-Regulating Heating Cables to Power Connection (UVK)
- Junction Box for Series Resistance Heating Cable
- Junction Boxes for Connection of Data, Control and Signal Cables
- Junction Boxes for Connection of Heating Cables with Mineral Insulation
- Junction Boxes for Light Indication and Connection of Heating Cables to Power Supply
- Junction Boxes for Self-Regulating Heating Cables
- Junction Boxes for Self-Regulating Heating Cables (3 and More Circuits)
- Junction Boxes for Series-Resistance Cables
- Junction Boxes for Three-Phase Series-Resistance Heating Cables Connection
- Cable Glands
- Connection Kits & Accessories
- Junction Boxes
- Commercial De-icing Systems
Junction Boxes for Series-Resistance Cables
Features
- Efficient solution for power supply and input of SNF and TMF series-resistance heating cables
- Compatible with cable types SNF and TMF
- Designed for loop, star and delta connection
Application Areas
Approved for installation in explosion hazard areas
Approvals
Junction boxes are designed for connecting of series-resistance heating cables, such as SNF and TMF, to power network.
Boxes’ models are supplied in 2 installation variants:
- complete with a pipe installation support stand (UVK) for direct mounting onto the surface of a pipeline or tank;
- for installation onto a wall, onto a nearby metal structure or using a bracket directly onto the pipeline (bracket supplied separately).
The enclosure design ensures moisture and dust ingress protection IP66 and high corrosion stability. Cable glands of the box are intended for connecting unarmored power cables with a diameter of 7 to 18 mm or armored power cables with a diameter of 12 to 20 mm.
The installed terminal blocks allow the connection of multi-core or single-core wires with a cross-section of 1.5 to 10 mm2 (JB2221-223 models) or up to 16 mm2 (JB2221-333, JB2221-533 models). Design options with screw or spring terminal straps are available to order.
- Efficient solution for power supply and input of SNF and TMF series-resistance heating cables
- Compatible with cable types SNF and TMF
- Designed for loop, star and delta connection
- Excludes the risk of damage to the heating cables at the connection points
- All required component parts included in the scope of supply
- Wide application range
- Quick and easy installation
- High thermal stability
- Non-corrosive
Technical Data
| Dust and moisture protection rating | IP66 |
|---|---|
| Explosion protection marking |
Ех еb IIC Т6...Т3 Gb Ex tb IIIC T85°C... T165°C Db |
| Temperature group of the explosion hazard area | T6 |
| Operating ambient temperature range | −60 ... +55 °С |
| Operating voltage: JB2221-223 JB2221-333, JB2221-533 |
max 550 V max 750 V |
| Operating current: JB2221-223 JB2221-333, JB2221-533 |
max 50 A max 66 A |
| Enclosure dimensions: JB2221-223 JB2221-333 JB2221-533 |
122×120×91.5 mm 160×160×94.5 mm 260×160×90 mm |
| Total weight (maximum): JB2221-223 JB2221-333 JB2221-533 |
1.35 kg 2.26 kg 2.30 kg |
| Material Box / Color | Glass fiber reinforced polyester / Black |
| Material Pipe installation support / Color | Glass fiber reinforced polyester / Black |