Vent Plug
DA 284

  • UL Type 1, 4, 4X & IP66 protection
  • Waterproof membrane
  • Easy to install
  • Two sizes - M40 & M12

In enclosures and housings with a high protection class, differential pressure happens due to internal and external temperature changes. In the event of negative pressure, dust and humidity can be drawn into the enclosure through the seals on the doors. This can cause condensation when the air in the enclosure cools down. The easy-to-fit DA 284 pressure compensation device enables pressure compensation with protection class IP66. Additionally, the watertight membrane inside the pressure compensation device allows humidity to escape from the cabinet at overpressure, while preventing water, humidity or dirt intrusion at under pressure.

Mountingthread with nut (see below)
Torque5 Nm
Materialplastic according to UL 94V-0, light grey,
weather and UV light resistant according to UL 746C (f1)
SealingNBR gasket
Filterwaterproof membrane
Operating / Storage temperature-31 to +158 °F (-35 to 70 °C)
Protection typesee below
Agency approvalsUL File No. E234324, EAC
Environmental ratingType 1, 4 and 4X

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Make cut-out in enclosure wall of diameter 1.58 inches (40,5+0,5 mm) ) for size M40 or 0.48 inches (12+0,2 mm) for size M12, and mount vent plug with nut. Make sure that the sealing gasket is placed on the outer side of the enclosure.

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Part No.ModelThread length (depth in enclosure)Protection typeAir permeability¹1 packing unitWeight (approx.)
28405.0-00M40 x 1.5approx. 16 mmIP66 (EN 60529) / IPX9K (EN 40050-9)1200 liters/hr2 pieces3.2 oz. (90 g) total
28406.0-00M12 x 1.5approx. 10 mmIP66 (EN 60529) / IPX9K (EN 40050-9)120 liters/hr2 pieces0.14 oz. (4 g) total

Dimensioned Drawing

DA 284 Vent Plug M40