Approved for installation in explosion hazard areas
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:
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.
|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:|
max 550 V|
max 750 V
| Operating current:|
max 50 A|
max 66 A
122×120×91.5 mm |
|Total weight (maximum):|
1.35 kg |
|Material Box / Color||Glass fiber reinforced polyester / Black|
|Material Pipe installation support / Color||Glass fiber reinforced polyester / Black|