Conventional accessories

Integrated safety devices

Keep constant control over four key health parameters in your hermetically sealed transformer with or without oil conservator: pressure, temperature, oil level, and gassing with just one compact device. Choose our integrated safety detector RIS2, which integrates the functions performed by different accessories into one, saves space, and assures reliable and safe operation of the transformer. The operator can monitor the different values on-site through the easy-to-read dials and decide on the best transformer maintenance schedule. 

Contact us and get support with the product selection.

Why buy

  • Proven technology 
  • Large installed base
  • 4-in-1: four accessories combined into one compact device
  • Adjustable value settings for pressure range
  • 270 Degree View for Liquid level indicator increases the flexibility for the installed position
  • Easy installation and easy maintenance


  • Hermetically sealed liquid-filled distribution and small power transformers with and without oil conservator
  • Suitable for new installations and retrofits
  • Suitable for offshore environment
  • Suitable for tropical climates
  • Suitable for solar power applications
  • Suitable for harsh environments

Technical data at a glance

StandardIEC 60076-22-1
Degree of protection (CEI-EN 60529)IP66
IP67 upon request
Degree of shock tightness (EN 50102)IK 07
Salt-fogtight1,000 h
UV-Ray resistance
(UNI-ISO 4892 / UNI-ISO 4582)
500 h
Ambient temperaturefrom -40°C to +60°C
Oil temperaturefrom 40°C to 120°C
Cable connectionM25x1,5
Cable box (EN 60947-7-1 / IEC 947-7-1)According to standard
Wire section to be used on clamp boxUp to 2,5 mm3
Max. rated pressure500 mbar
Electrical characteristicsInsulated enclosure
Thermostats precision± 4°C accuracy tolerance of end scale
CONTACTS INTERRUPTION POWERVoltageMaking capacityBreaking capacity
Liquid level / gas bleed24 V dc to 230 V dc2A100 m/aL/R < 40 ms
Pressure switch24 V ac to 230 V ac2A2Acos Φ > 0,5