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RN42 active barrier

Active barrier, 1 channel for 4 to 20 mA, HART® transparent with 24 to 230 V AC/DC as well as active/passive input and output, optionally with SIL and Ex

RN42 active barrier

Active barrier, 1 channel for 4 to 20 mA, HART® transparent with 24 to 230 V AC/DC as well as active/passive input and output, optionally with SIL and Ex

This product is stocked in various preconfigured variants that usually ship within just 2 working days.
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Benefits

  • Wide range power supply of 19.2 to 253 V AC/DC
  • Quick and easy wiring thanks to plug-in terminals
  • Optional for safety-oriented applications up to SIL 2 (SC3) in accordance with IEC 61508
  • Optional installation in Ex Zone 2
  • Compact housing width with 17.5 mm (0.69 in) for efficient use of space
  • Option for installation rotated by 180° (terminals for power supply at top or bottom)
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RN42 active barrier

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5-year warranty

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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.

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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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Product information

Specifications
Measuring / Application task Power supplies & barrier
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Description

The active barrier is used for transmission and galvanic isolation of 4 to 20 mA/HART signals. The device has an active / passive current input to which a 2- or 4-wire transmitter can be connected directly. The output of the device can be operated actively or passively. The current signal is then available to the PLC / controller or for further instrumentation at pluggable screw or optional push-in terminals.

Field of application
  • 1-channel active barrier, wide-range power supply
  • Transmission and galvanic isolation of analog 0/4 to 20 mA signals
  • Optionally intrinsic safe [Ex-ia] signals from hazardous area
  • Bidirectional transmission of HART® communication signals
  • Feeding or not feeding input for 2- or 4-wire instruments 
  • Active or passive signal output
  • Ambient temperature range: -40 … 60 °C (-40 … 140 °F)
Benefits
  • Wide range power supply of 19.2 to 253 V AC/DC
  • Quick and easy wiring thanks to plug-in terminals
  • Optional for safety-oriented applications up to SIL 2 (SC3) in accordance with IEC 61508
  • Optional installation in Ex Zone 2
  • Compact housing width with 17.5 mm (0.69 in) for efficient use of space
  • Option for installation rotated by 180° (terminals for power supply at top or bottom)
Downloads
Most downloaded
Operating Instruction (BA)
BA RN42 Active barrier, 1-channel for 4 to 20 mA, HART® transparent with
24 to 230 V (AC/DC) and active/passive input and output,
optionally with SIL and Ex
English version - 06/2024
Download
Technical Information (TI)
TI RN42 Active barrier
English version - 06/2024
Download
Short Instruction (KA)
KA RN42 Active barrier, 1-channel for 4 to 20 mA, HART® transparent with 24 to 230 V <sub>AC/DC</sub> and active/passive input and output, o
ptionally available with SIL and Ex
English version - 06/2024
Download
The CAD Drawings will be available after the configuration.
All downloads
36 Downloads
Technical Information (TI)
Most downloaded
TI RN42 Active barrier
English version - 06/2024
Download
Operating Instruction (BA)
Most downloaded
BA RN42 Active barrier, 1-channel for 4 to 20 mA, HART® transparent with
24 to 230 V (AC/DC) and active/passive input and output,
optionally with SIL and Ex
English version - 06/2024
Download
Short Instruction (KA)
KA RN42 Active barrier, 1-channel for 4 to 20 mA, HART® transparent with 24 to 230 V <sub>AC/DC</sub> and active/passive input and output, o
ptionally available with SIL and Ex
English version - 06/2024
Download
Ex Safety Instruction (XA)
XA RN22, RN42 Ex tc IIIC Dc
English version - 01/2023
Download
Ex Safety Instruction (XA)
RN22, RN42 [Ex ia Ga] IIC
[Ex ia Da] IIIC
Ex ec IIC Gc
English version - 09/2022
Download
Ex Safety Instruction (XA)
XA RN22, RN42 [Ex ia Ga] IIC
[Ex ia Da] IIIC
Ex ec IIC Gc
English version - 05/2023
Download
Ex Safety Instruction (XA)
XA RN22, RN42 ATEX, IECEx:
II(1)G [Ex ia Ga] IIC
II(1)D [Ex ia Da] IIIC
II3G Ex ec IIC Gc
English version - 05/2023
Download
Ex Safety Instruction (XA)
XA RN22, RN42 [Ex ia Ga] IIC
[Ex ia Da] IIIC
Ex ec IIC Gc
English version - 10/2023
Download
Functional Safety (FY)
RN22, RN42 Active barrier for isolating 4 to 20 mA standard signal circuits,
HART-transparent
English version - 10/2021
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
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
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: RN42-
Declaration number: EC_00926_01.21
English version - 07/2021
Download
EU Declaration
Product family: Power supply and barrier Product root: RN42-
Declaration number: EC_00927_01.21
English version - 07/2021
Download
EU Declaration
Product family: Power supply and barrier Product root: RN22-, RN42-
Declaration number: EU_01005_01.22
English version - 04/2023
Download
EU Declaration
Product family: Power supply and barrier Product root: ORN42-, RN42-
Declaration number: UK_00415_01.21
English version - 08/2021
Download
EU Declaration
Product family: Power supply and barrier Product root: RN42-
Declaration number: EC_00924_01.21
English version - 07/2021
Download
UK Conformity Assessed
Product family: Power supply and barrier Product root: RN22-, RN42-
Declaration number: UK_00558_01.23
English version - 04/2023
Download
UK Conformity Assessed
Product family: Power supply and barrier Product root: ORN42-, RN42-
Declaration number: UK_00464_01.21
English version - 12/2021
Download
UK Conformity Assessed
Product family: Power supply and barrier Product root: ORN42-, RN42-
Declaration number: UK_00405_01.21
English version - 03/2022
Download
Explosion Protection
Product family: Power supply and barrier Product root: RN22-, RN42-
Region: Japan
Approval agency: CML
Protection: Ex [i] Zone 0, Ex [i] Zone 20
Japanese version - 04/2026
Download

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RN42 active barrier
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RN42 active barrier
Details
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Spare parts and accessories

further parts
further parts

Terminal set 3pol. DIN rail screw

further parts
further parts
Order code 71505345
further parts
further parts

Terminal set 3pol. DIN rail push-in

further parts
further parts
Order code 71505346
further parts
further parts

Flap 17.5 W25 DIN rail housing

further parts
further parts
Order code 71505348
Spare parts & accessories

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RN42 active barrier, wide-range power supply of loop-powered transmitters
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Spare parts and accessories

further parts
further parts

Terminal set 3pol. DIN rail screw

further parts
further parts
Order code 71505345
further parts
further parts

Terminal set 3pol. DIN rail push-in

further parts
further parts
Order code 71505346
further parts
further parts

Flap 17.5 W25 DIN rail housing

further parts
further parts
Order code 71505348
Spare parts & accessories