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RB223 passive barrier

One or two-channel barrier for the safe separation of 4...20 mA standard signal circuits

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RB223 passive barrier

One or two-channel barrier for the safe separation of 4...20 mA standard signal circuits

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Benefits

  • Compact side-by-side housing for DIN rail
  • Space-saving one-channel and two-channel version
  • No power supply necessary
  • International Ex approvals; Can be used up to SIL 3
  • Bidirectional HART® transmission
  • Communication sockets for HART® + integrated HART® resistor for sensor configuration
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RB223 passive barrier

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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

Product picture passive barrier RB223
RB223
Specifications
Measuring / Application task Power supplies & barrier
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Description

The RB223 passive barrier can be used to galvanically isolate active signal circuits (0 to 20 mA) in three applications: Transmission from non-Ex to Ex areas e.g for active adjusters, controllers or indicators, Transmission from Ex to non-Ex areas for connection of active, intrinsically safe circuits to the PLC, Transmission from Ex to non-Ex areas for supply of intrinsically safe transmitters with non-intrinsically safe transmitter power supply.

Field of application

Separation of active 0/4 to 20 mA signals from transmitters, valves and adjusters.

Benefits
  • Compact side-by-side housing for DIN rail
  • Space-saving one-channel and two-channel version
  • No power supply necessary
  • International Ex approvals; Can be used up to SIL 3
  • Bidirectional HART® transmission
  • Communication sockets for HART® + integrated HART® resistor for sensor configuration
Predecessors
TCM141
Downloads
Most downloaded
Technical Information (TI)
RB223 One- or two-channel passive barrier
English version - 07/2021
Download
Operating Instruction (BA)
Betriebsanleitung / Operating Instructions RB223 Betriebsanleitung Passivtrenner RB223 / Operating Instructions Isolator
RB223
English version - 06/2021
Download
Ex Safety Instruction (XA)
RB223 ATEX: II (1)GD Safety Instructions Safety instructions for electrical apparatus certified for use in
explosion-hazardous areas.
English version - 05/2016
Download
The CAD Drawings will be available after the configuration.
All downloads
29 Downloads
Technical Information (TI)
Most downloaded
RB223 One- or two-channel passive barrier
English version - 07/2021
Download
Operating Instruction (BA)
Most downloaded
Betriebsanleitung / Operating Instructions RB223 Betriebsanleitung Passivtrenner RB223 / Operating Instructions Isolator
RB223
English version - 06/2021
Download
Ex Safety Instruction (XA)
RB223 ATEX: II (1)GD Safety Instructions Safety instructions for electrical apparatus certified for use in
explosion-hazardous areas.
English version - 05/2016
Download
Ex Safety Instruction (XA)
RB223 CSA:
Control Drawing NI
022000113
English version - 02/2007
Download
Ex Safety Instruction (XA)
RB223 FM:
Control Drawing AIS, ANI, NI
022000111
English version - 09/2006
Download
Ex Safety Instruction (XA)
RB223 CSA:
Control Drawing IS, NI
022000112
English version - 02/2007
Download
Certificates FM/CSA (ZD)
Control Drawing CSA Intrinsically Safe, Non-Incendive Passive Barrier RB223 Passive Barrier RB223
Installation Notes for hazardous locations
English version - 09/2016
Download
Special Documentation (SD)
Functional safety manual RB223 Functional safety manual for passive barrier RB223
English version - 04/2009
Download
PU (Publication)
Portfolio Overview System products and data manager Solutions to complete your measuring point
English version - 07/2025
Download
PU (Publication)
Produits système et data managers Solutions pour compléter votre point de mesure
French version - 02/2022
Download
PU (Publication)
Componenti di sistema e data manager Soluzioni per il completamento del punto di misura
Italian version - 05/2019
Download
PU (Publication)
Portfolioübersicht Systemprodukte und Datenmanager Lösungen zur Komplettierung der Messstelle
German version - 07/2025
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)
System Components e Data Managers Componenti di sistema e data manager
Soluzioni per il completamento del punto di misura
Italian version - 04/2018
Download
Fields of Activities (FA)
Componentes de sistema y registradores Soluciones para el lazo de control
Indicadores, dispositivos de interfaz, protección contra sobretensiones,
gestores de aplicaciones y energía, registradores sin papel y paquetes
de software asociado para la automatización de procesos.
Spanish version - 05/2020
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)
Komponenty AKPiA i rejestratory ekranowe Rozwiązania dla pętli sygnałowych
Polish version - 04/2018
Download
Fields of Activities (FA)
Produits système et data managers Solutions associées
French version - 01/2019
Download
Competence Brochure (CP)
Catálogo soluciones esenciales Alta calidad a precios competitivos
Spanish version - 01/2017
Download
AI (Application note)
Schutz vor Staubentzündung in Schüttguttanks & Silos Schutz vor Staubentzündung
in Schüttguttanks & Silos
und garantierte Sicherheit von
Personal & Anlagen
German version - 03/2023
Download
AI (Application note)
Éviter l'inflammation des poussières de céréales dans les cuves & silos en vrac Éviter l'inflammation des poussières de céréales dans
les cuves et silos en vrac et garantir la sécurité du personnel
et des actifs
French version - 10/2023
Download
Manufacturer Declaration
Product family: Accessories: System components, Contactors/transmitters, Ecograph, Memo-Graph, Over voltage protector, Power supply and barrier, Process displays, Soliswitch Product root: FMA90-, FTE20-, HAW566-, HAW568-, RA33-, RB223-, RH33-, RIA14-, RIA15-, RIA16-, RIA45-, RIA452-, RIA46-, RID14-, RID16
-, RLN22-, RLN42-, RMA42-, RN22-, RN42-, RNF22-, RNO22-, RS33-, RSG35-, RSG45-
Declaration number: HE_02283_01.25
Manufacturer specification: RoHS
Additional information: China RoHS
English version - 11/2025
Download
EU Declaration
Product family: Power supply and barrier Product root: RB223-
Declaration number: EC_00331_01.16
English version - 04/2016
Download
EU Declaration
Product family: Power supply and barrier Product root: RB223-
Declaration number: EC_00174_02.16
English version - 07/2021
Download

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