Junction Boxes for Connection of Data, Control and Signal Cables

Junction boxes models range JB222(3)1-223-1X(14-17) and JB222(3)1-223-2X(16-24) are designed for connecting control cables in the electric heating systems.

The boxes’ installation supposes 2 mounting variants according to the models chosen:

• JB222(3)1-223-1X(14-17) — with a pipe installation support (UVK), to be mounted on the surface of the heated pipeline, tank, etc.
• JB222(3)1-223-2X(16-24) — installation on a wall or on nearby metal structure or using a bracket directly on a pipeline. Bracket is supplied separately.

The box allows connection of one or two control cables, up to three temperature sensors and input through thermal insulation of up to four temperature sensors (one reserved).

The enclosure design ensures moisture and dust ingress protection IP66 and high corrosion stability. The 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 0.5 to 2.5 mm². Design options with screw or spring terminal blocks and with various types of explosion protection: models JB2221 — type “e” (increased safety) and models JB2231 — type “ia” (intrinsic safety) — are available.