Technical Data
Ventilating
DA 284 Vent Plug
DA284/2-11/US
Specifications are subject to change without notice. Suitability of this product for its intended use and any associated risks must be determined by the end customer/ buyer in its final application.
STEGO, Inc. · 1395 South Marietta Parkway · Building 800 · Marietta, GA 30067 · Tel: (770) 984-0858 · Fax: (770) 984-0615
Toll free: 1-888-783-4611 (US & Canada only) · www.stegousa.com
UL Type 1, 4, 4X & IP 66 protection
Waterproof membrane
Easy to install
Two sizes - M40 & M12
Pressure differentials in a hermetically sealed enclosure are a result of the heat generated by
electrical and electronic components in the enclosure, as well as the fluctuation of the outside
temperature. In the case of negative pressure or vacuum, for example, dust and humidity can
enter the enclosure through the door seal.
The DA 284 Vent Plug provides a protected enclosure environment for valuable and crucial com-
ponents with a UL 4X rated degree of protection. A waterproof membrane inside the device
allows air and humidity to leave the enclosure. Conversely, it only allows dry air into the enclo-
sure while not allowing humidity and dust from the outside to enter.
Part No. Model Thread length
(depth in enclosure) Protection type Air permeability1) 1 packing unit Weight (approx.)
28405.0-00 M40 x 1.5 approx. 16mm IP66 (EN 60529) / IPX9K (EN 40050-9) 1200 liters/hr 2 pieces 3.2 oz. (90g) total
28406.0-00 M12 x 1.5 approx. 10mm IP66 (EN 60529) 120 liters/hr 2 pieces 0.14 oz. (4g) total
Mounting thread with nut (see below)
Material plastic, PA66, light grey
Sealing NBR gasket
Filter waterproof membrane
Operating/storage temperature -49 to +158°F (-45 to 70°C)
Protection type see below
Agency approvals UL File No. E234324
Environmental rating Type 1, 4 and 4X
Installation
Make cut-out in enclosure wall of 1.58 inches (40-40.2mm) for size M40 or 0.48 inches (12-12.2mm) for size
M12, and mount vent plug with nut. Make sure that the sealing gasket is placed on the outer side of the enclo-
sure. For optimal pressure compensation, it is recommended to use two devices on opposite sides towards the
top of the enclosure.
1) at a pressure difference of min. 70mbar
Photo: DA 284, M40
Dimensional drawing: DA 284, M40
Dimensional drawing: DA 284, M12
(drawing is not proportional to M40)
Photo: DA 284, M12