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RNB22 system power supply unit

System power supply unit for parallel operation with 100 to 250 V AC input and 24 V DC 2.5 A output as well as static/dynamic boost

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RNB22 system power supply unit

System power supply unit for parallel operation with 100 to 250 V AC input and 24 V DC 2.5 A output as well as static/dynamic boost

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Benefits

  • Safe and reliable, single-phase output in the power range up to 100 W
  • Smart system function monitoring for fault prevention for high system availability
  • Powerful reserve capacity for lower power ranges
  • Transient surge protection, short-circuit proof, no-load proof
  • Tool-free installation, suited for vertical or horizontal mounting
FLEXible answers to individual needs
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RNB22 system power supply unit

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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.

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Right‑first‑time commissioning, worldwide

Endress+Hauser’s qualified service engineers ensure your measurement devices are commissioned right the first time, delivering application‑aligned accuracy, regulatory compliance, and operational confidence from startup onwards, anywhere in the world.

Remote support you can trust wherever you operate

With Endress+Hauser Smart Support, you benefit from faster issue resolution, higher uptime, reliable global expertise across the entire product lifecycle – and lasting peace of mind.

Committed to long‑term, sustainable performance

With deep field expertise, harmonized processes, and continuous monitoring, we accompany you with comprehensive service offerings – from initial start‑up through instrumentation maintenance to process optimization – as a true lifetime partner delivering improved outcomes.

For additional information, please contact your local Endress+Hauser representative.

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Product information

RNB22 compact, high-efficiency primary switch mode power supply for DIN rail interface systems
RNB22
Specifications
Measuring / Application task Power supplies & barrier
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Description

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.

Field of application
  • High-efficiency 24 VDC / 2.5 A power supply with low power dissipation 
  • Parallel mode with RNF22 for redundancy 
  • Suited for decentralized applications or remote cabinets 
  • Compact housing efficient use of space in control cabinets 
  • Low heat dissipation, no lateral clearance required 
  • Ambient temperature range: –25 to 70 °C (–13 to 158 °F)
Benefits
  • Safe and reliable, single-phase output in the power range up to 100 W
  • Smart system function monitoring for fault prevention for high system availability
  • Powerful reserve capacity for lower power ranges
  • Transient surge protection, short-circuit proof, no-load proof
  • Tool-free installation, suited for vertical or horizontal mounting
Downloads
Most downloaded
Technical Information (TI)
RNB22 System power supply unit 24 V DC / 2.5 A
English version - 05/2021
Download
UK Conformity Assessed
Product family: Power supply Product root: RNB22-
Declaration number: UK_00476_01.21
English version - 12/2021
Download
Operating Instruction (BA)
RNB22 System Power Supply for RxLine Interfaces RNB22 System Power Supply for Rx-Line Interfaces
Included languages: DE+EN+FR+IT+TR+PT+ES+PL+ZH+RU
English version - 03/2021
Download
The CAD Drawings will be available after the configuration.
All downloads
15 Downloads
Technical Information (TI)
Most downloaded
RNB22 System power supply unit 24 V DC / 2.5 A
English version - 05/2021
Download
Operating Instruction (BA)
RNB22 System Power Supply for RxLine Interfaces RNB22 System Power Supply for Rx-Line Interfaces
Included languages: DE+EN+FR+IT+TR+PT+ES+PL+ZH+RU
English version - 03/2021
Download
Special Documentation (SD)
Device viewer Technical documentation in other languages
English version - 07/2021
Download
Fields of Activities (FA)
コンポーネントカタログ HAW562-
HAW569-
MS20-
MS21-
RA33-
RB223-
RDL10-
READWIN-
RH33-
RIA14-
RIA15-
RIA16-
RIA45-
RIA452-
RIA46-
RID14-
RID16-
RID261-
RLN22-
RLN42-
RMA42-
RMC621-
RMS621-
RN22-
RN221N-
RN42-
RNB22-
RNF22-
RNO22-
RS33-
RSG30-
RSG35-
RSG40-
RSG45-
RXO20
Japanese version - 08/2022
Download
Fields of Activities (FA)
시스템 제품 및 데이터 관리자 - 시그널 루프 구성 솔루션 시스템 제품 및 데이터 관리자 - 시그널 루프 구성 솔루션
Korean version - 03/2024
Download
Fields of Activities (FA)
System products and data managers Solutions to complete your measuring point
English version - 09/2026
Download
Fields of Activities (FA)
Systemprodukte und Datenmanager Lösungen zur Vervollständigung Ihrer Messstelle
German version - 09/2026
Download
Innovation (IN)
RN Series Zuverlässige Signalverarbeitung und -aufbereitung Spannungsversorgungen, Speisetrenner und
Trennschaltverstärker für Sensoren und
analoge Signale
German version - 06/2023
Download
Innovation (IN)
RN 시리즈 - 신뢰할 수 있는 신호 처리 및 조절 보장 RN시리즈 - 신뢰할 수 있는 신호 처리 및 조절 보장
Korean version - 09/2021
Download
Innovation (IN)
Innovation brochure about the RN Series RN Series - Reliable signal processing and conditioning
English version - 06/2023
Download
Innovation (IN)
RN Series Traitement et conditionnement fiable des signaux
French version - 09/2021
Download
AI (Application note)
Saving energy with smart e-boiler monitoring Boosting sustainability with real-time energy insights
English version - 12/2025
Download
AI (Application note)
Energie sparen mit intelligenter E-Boiler Überwachung Mehr Nachhaltigkeit durch Echtzeit-Energieüberwachung
German version - 12/2025
Download
UK Conformity Assessed
Most downloaded
Product family: Power supply Product root: RNB22-
Declaration number: UK_00476_01.21
English version - 12/2021
Download
Marine
Product family: Power supply Product root: RNB22-
Region: International
Approval agency: DNV
English version - 04/2022
Download

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