Approved for installation in explosion hazard areas
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:
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.
|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|
122×120×91.5 mm |
|Total weight (maximum):|
|Material Box / Color||Glass fiber reinforced polyester / Black|
|Material Pipe installation support / Color||Glass fiber reinforced polyester / Black|