Pepperl Fuchs Fieldbus Barrier RD0-FB-Ex4.*
4 outputs Ex ia IIC
FieldBarrier in Zone 1/Div. 2
Instruments in Zone 0...1/Div. 1
Short circuit current limitation per output
For FOUNDATION Fieldbus H1 and PROFIBUS PA
Power, Com, and Error LEDs
Supports FISCO and Entity
Integrated cable tie-downs
Supports all grounding methods
General specifications
Fieldbus barrier, module for DIN rail mounting
General specifications
Design / Mounting    Cabinet installation
Installation in hazardous area    Zone 1 / Div. 2
Fieldbus connection
Main cable (Trunk)    
Connection    input (Trunk IN): terminals 3+, 4-, 5s
output (Trunk OUT): terminals 7-, 8+, 6s
Rated voltage    32 ... 16 V DC
Rated current    31 mA ... 26 mA (without load)
77 mA ... 115 mA (at 20 mA load per input)
120 mA ... 209 mA (at 40 mA load per input)
135 mA ... 241 mA (short-circuit on all outputs)
Voltage drop    trunk IN to trunk OUT 100 mV max.
Number of couplers    max. 4 per segment
Outputs    
Number of devices per output    1
Connection    output 1: terminals 10+, 11-, 12S shield;
output 2: terminals 13+, 14-, 15S shield;
output 3: terminals 16+, 17-, 18S shield;
output 4: terminals 19+, 20-, 21S shield
Rated voltage    10 ... 13 V
Rated current    max. 43 mA
Short-circuit current    50 mA
Indicators/operating means
LED voltage Fieldbus    green: on, bus voltage existent
LED status output    red flashing: short-circuit
Galvanic isolation
Main wire/outputs    isolation is not affected by interference according to EN 50020, voltage peak value 375 V
Directive conformity
Electromagnetic compatibility    
Directive 2014/30/EU    EN 61326-1:2013
Standard conformity
Electromagnetic compatibility    NE 21:2006
Degree of protection    IEC/EN 60529
Fieldbus standard    IEC 61158-2
Climatic conditions    DIN IEC 721
Corrosion resistance    acc. to ISA-S71.04-1985, severity level G3
Ambient conditions
Ambient temperature    -50 ... 70 °C (-58 ... 158 °F)
Storage temperature    -40 ... 85 °C (-40 ... 185 °F)
Mechanical specifications
Connection type    screw terminal
Core cross section    up to 2.5 mm2
Housing    see figure 1
Housing material    Polycarbonate
R... DIN rail housing    PA 6.6
Degree of protection    IP20
Mass    1050 g
Mounting    DIN rail mounting
Data for application in connection with hazardous areas
EU-type examination certificate    PTB 02 ATEX 2086
Marking    Ex-Hexagon II 2 (1) G Ex eb mb [ia Ga] IIC T4 Gb ,
Ex-Hexagon II (1) D [Ex ia Da] IIIC
Main cable (Trunk)    
Maximum safe voltage Um    253 V AC
Outputs    
Power    975 mW
Voltage    15.75 V
Current    248 mA
Directive conformity    
Directive 2014/34/EU    EN IEC 60079-0:2018+AC:2020 , EN 60079-7:2015+A1:2018 , EN 60079-11:2012 , EN 60079-18:2015+A1:2017
International approvals
FM approval    CoC 3015728
Control drawing    116-0266
Approved for    Class I, Division 2, Groups A, B, C, D / Class I, Zone 2, AEx nA [ia] IIC T4
CSA approval    CoC 1845315
Control drawing    116-0266
Approved for    Class I, Division 2, Groups A, B, C, D / Class I, Zone 2, Ex nA [ia] IIC T4
IECEx approval    IECEx PTB 03.0003
Approved for    Ex eb mb [ia Ga] IIC T4 Gb , [Ex ia Da] IIIC
Certificates and approvals
FOUNDATION Fieldbus    FF-846
Marine approval    DNV A-14038