Single or dual channel passive isolator for 4...20 mA standard signal circuits

General Information
Mechanical Data
Additional Information
SKU: RB223


  • Input: 2 x analog 4…20 mA
  • Output: 2 x analog 4...20 mA
  • Bidirectional HART® transmission
  • Compact modular housing for top-hat rail

Fields of application

  • Separation of active 0/4...20 mA signals from transmitters, valves and actuators


The passive isolator RB223 is used for galvanic isolation of active signal circuits (0...20 mA) in three applications:Transmission of non-Ex areas to Ex areas e.g. for active actuators, controllers or indicators, transmission of Ex areas to non-Ex areas for the connection of active, intrinsically safe circuits to the PLC, transmission of Ex areas to non-Ex areas for the supply of intrinsically safe transmitters with non-intrinsically safe transmitter supply.

We find the right product for you
What do our customers say

Valentine Godin

Great product and customer care! Reliable, fast and honest... I have recently purchased 2 pieces of equipments; their service has been spot on from start to finish, understanding my needs, providing useful advice and rapid assistance when it was required! Highly satisfied, I highly recommend their teams and would definitely work with them again in the future!

Questions & Answers

Ask a question, and our experts will reply shortly.

Configure & Order
Select options and get a more accurate price and delivery time. At the end of the configuration, you can directly purchase the configured device or share it with your colleagues.
We find the right product for you
What do our customers say

Somya Gupta

The conversation was highly helpful to me. I want to know about the suitable sensors that can be used for level measurements for conical tank systems. Mr. Pedro has quickly responded and explained in very ease way. It was nice interacting with him.

Product Details