The R series transformers breathers are designed to provide ease of use for checking and maintaining the desiccant condition. The breather’s body is made of UV-stabilised and shatterproof polycarbonate windows that enable quick checks. The unit has two-way, low-pressure valves in the base that allow air to enter the breather only when there is a negative pressure within the equipment.

The transformer breather is mounted on a ¾” female pipe thread connection at the top of the breather, allowing for easy filling and emptying of the desiccant. The R series breathers are available in different sizes – R, R1, and R2 – to cater to various transformer requirements. The R3 breather includes two R1 breathers, saturating one completely before the other, providing more time for handlers to replace the desiccants only when both breathers are thoroughly saturated with moisture.

  • High-performance plastic or metal construction
  • Simple installation
  • ISO9001/2008 design approved
  • Suitable for 1250 kVA to 750 mVA Transformers
  • Low dusting beaded Envirogel adsorbent
  • Up to 25% adsorption capacity
  • Definitive colour change saturation indication
  • IP65 rating
  • Operating Temperature Range -50°C to 70°C
  • Vandal proof
  • Weather resistant
  • All round visual saturation indicator


 Max. Oil Contents

 Weight of Desiccant

 Overall Length (A)

 Overall Diameter (B)


 1500 Litres





 3000 Litres





 4750 Litres




R Series Transformer Breather Product Brochure: Download