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RNB22 compact, high-efficiency primary switch mode power supply for DIN rail interface systems

RNB22 system power supply unit 24 V DC / 2.5 A

System power supply for parallel operation with 100-250 V AC input and 24 V DC output as well as static/dynamic boost

RNB22
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5-year warranty

Engineered for Confidence

Our Fundamental Selection instruments feature an extended 5-year warranty – a clear testament of our trust in their long-term reliability and performance.

Should a warranty case occur, you can count on a fast replacement process and minimal administrative effort – giving you peace of mind when it matters most and helping you keep your operations running smoothly.

Warranty terms apply

The extended warranty is subject to specific conditions. For full details, please refer to the locally applicable General Terms and Conditions (GTC), which can be found on the respective country page of our website.

RNB22 system power supply unit for 24 VDC / 2.5 A output
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©Endress+Hauser

RNB22 system power supply for DIN rails for one 4 wire sensor or transmitter

The RN Series interface devices
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©Endress+Hauser

RN Series interface devices

RN Series interface devices installed in a control cabinet
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©Endress+Hauser

RN Series compact interface devices being commissioned in a control cabinet

RNB22 system power supply for DIN rails for one 4 wire sensor or transmitter

Specs at a glance

  • Output

    24...28 V DC

  • Power Supply

    100…240 V AC/DC

Field of application

The RNB22 is a compact, high-efficiency primary switch mode power supply for DIN rail interface systems. It delivers a reliable, single-phase, 24 VDC / 2.5 A output and runs on a wide-range input from 100 to 240 VAC / 110 to 250 VDC, with a dynamic and static boost of 5 A and 3.125 A respectively.
When run in parallel with the RNF22 error message module, the RNB22 provides redundancy, increased capacity, as well as function monitoring to report critical operating states before errors occur.

  • Highly efficient, primary-switched system power supply with wide-range input of 100 to 240 VAC/ 110 to 250 VDC

  • Single-phase output of 24 VDC/ 2.5 A, with dynamic and static boost of 5 A

  • Parallel use with RNF22 for redundant system power supply

  • Particularly suitable for decentralized applications or control cabinets without 24 VDC power supply

  • For ambient temperatures –25 to 70 °C (–13 to 158 °F)

Benefits

  • Safe and reliable single-phase output in the power range up to 100 W

  • High system availability thanks to intelligent, preventive function monitoring that reports critical operating conditions before faults occur

  • Powerful reserve capacity even in the lower power range

  • Protection against transient voltage spikes, short-circuit-proof and safe for no-load operation

  • High efficiency and long service life with low levels of power dissipation and heat generation

  • Tool-free installation in any mounting position (horizontal or vertical)

  • Space-saving installation in the control cabinet thanks to slim, flat construction

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