DA 284S Pressure Compensation Device

DA 284S Pressure Compensation Device
DA 284S Pressure Compensation Device

Pressure compensation Device DA 284

High degree of protection
Waterproof membrane
Easy to install

Pressure differentials in enclosures with a high degree of protection are a result of internal and external temperature changes. In the case of negative pressure or partical vacuum, dust and humidity can enter the enclosure through the door seal. When the air inside the enclosure cools down, condensation may occur because the humidity cannot escape the enclosure. The easy-to-install pressure compensation device DA 284 provides compensation of pressure at a protection degree of IP66. Even with a slight overpressure, a waterproof membrane inside the plug allows the humidity to escape whilst blocking water and dirt from entering the enclosure.


Technical Data


thread M40 x 1.5 with nut


5Nm (max. 10Nm)

Depth in enclosure

approx. 9mm


stainless steel V2A (DIN 1.4305 / AISI 303)


sealing gasket NBR


waterproof membrane

Air permeability

1200l/h at a pressure difference of min. 70mbar


Ø 58 x 31mm

Fitting position


Operating / Storage temperature

-45 to +80°C (-49 to +176°F)



Make cut-out Ø 40.5 +0.5mm in enclosure wall and mount pressure compensation device with nut. Please make sure that the sealing gasket is put in place on the outer side panel of the enclosure. For optimal pressure compensation we recommend to use two devices on opposite sides towards the top of the enclosure.

Art. No.

Protection type                

Packaging unit


Weight (approx.)

28401.0-00 IP66 (EN 60529) / IPX9K (EN 40050-9)                

1 piece


News Center

> Thanks to the customer's trust - Winston Speed Controller

I have a client in Iran. He want US-52 and SS-22 speed controller in October. I sent a PI to him after sending price and freight charge, but i forgot to add freight...

> Voucher -- Thanks For Clients

This month our company launched a voucher, in order to appreciate the support from clients. When the client's goods value reached the setted amount, the voucher will...

> Winston returen work today. If you have any requirements, welcome to contact us.

Time in a hurry, in the beginning of the new year, we will be better customer service, quality is our culture, to give customers what they want. Winston returen work...