Junction Boxes for Light Indication and Connection of Heating Cables to Power Supply

−60°C
+55°C

Features

  • Provides light indication of power voltage presence at the end of heating cable section and connection of cables to power network
  • Compatible with all types of self-regulating electrical heating cables
  • High mechanical strength
Product Datasheet

Application Areas

Approved for installation in explosion hazard areas

Approvals

Junction boxes for light indication are designed to indicate the availability of power in heating sections based on self-regulating electric heating cables* and is intended for connecting heating cables 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 a pipeline (bracket supplied separately).

The box model JB2221-223-1X320* supports light indication only — end box.

The boxes JB2221-223 — allow connecting of one self-regulating heating cable to power cable or two cables if the box is used as an intermediate splitter.

The boxes JB2221-333 — allow connection to the power cable of up to three self-regulating heating cables in the version with screw terminal straps and up to two — in the version with spring terminal straps.

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. Design options with screw or spring terminal straps are available to order.

A light indicator with a super bright LED signals whether there is voltage at the heating section termination.

The green LED has a long service life and is visible in view angle of 180 °C, including in direct sunlight.

* This junction box is compatible with self-regulating heating cables HTM, HTA, HTP, BTC, BTX, HTB, CTE.

  • Provides light indication of power voltage presence at the end of heating cable section and connection of cables to power network
  • Compatible with all types of self-regulating electrical heating cables
  • High mechanical strength
  • 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 db 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 max 550 V
Operating current max 50 A
Electric life of the LED >105 hours
LED power intake <1 W
Light source green LED
View angle 180°
Enclosure dimensions:
JB2221-223
JB2221-333
122×120×91.5 mm
160×160×94.5 mm
Total weight (maximum):
JB2221-223
JB2221-333
1.55 kg
2.44 kg
Material Box / Color Glass fiber reinforced polyester / Black
Material Pipe installation support / Color Glass fiber reinforced polyester / Black