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High voltage junction box zone 1, 21

  • Stainless steel
  • Zone 1, 21
  • High voltage
  • Up to 36 kV in zone 1
  • Maximum current 312A
  • Tested DTS-01 anti-downpour
  • Robust machined hinges with a sticky and lockable cover for easy installation

The TFJB case is designed to end connections up to 36 kV in hazardous areas and accommodates a connecting phase of entry and exit. Made of marine grade stainless steel 316L (1.404), the TFJB is suitable for use in harsh and hazardous environmental conditions. To avoid dust and water penetration, it is rated IP66 according to EN 60529 and has been tested in DTS-01 downpour. This 36 kV case can accommodate drivers from 6 mm2 to 630 mm2. It has a maximum rated power of 174 W-T4 and can carry current up to 312 A.


Case type: high voltage
Protection index: IP66 according to EN60529, Type 4X, DTS-01
Shock resistance: > 7Nm (tested above 10 Nm)
Material: 2 mm 316L stainless steel case (EN 1.4404) with orbital finish, silicone seal and captive 316L stainless steel fasteners, 3 mm stainless steel cable plate 316L (EN 1.4404)
Finishes: maximum 1 driver per entry phase and 1 driver per exit phase
Number of shoulder-to-shoulder plates: 1 lower side
Crimps: 6 mm2 to 630 mm2
Grounding: via studs on box, door and cable plate
Mounting: via 3mm thick external mounting straps, a split top strap to make installation easier
Zone classification: Zone 1 and 21, gas and dust
Device coding: II 2 GD T4 Gb, Ex tb IIIC T1350C Db

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