Serviceline Industrial Sensors
Serviceline Explosion Protection

Fieldbus Surge Protector for Cabinet Installation, Ex ia DP-LBF-I1.36.*

  • Modular: protection module easy to replace
  • Intrinsically safe (Ex ia), FISCO, Entity, DART Fieldbus, or general-purpose
  • Protection module replaceable, interrupting or non-interrupting
  • Grounding of shield direct or via gas-discharge tube
  • For FOUNDATION Fieldbus H1 and PROFIBUS PA
  • Compact and space-saving design
  • Installation on DIN rail in cabinet or field junction box

Please note: All product-related documents, such as certificates, declarations of conformity, etc., which were issued prior to the conversion under the name Pepperl+Fuchs GmbH or Pepperl+Fuchs AG, also apply to Pepperl+Fuchs SE.

Download the complete datasheet as a PDF:

Datasheet excerpt: Technical data of  DP-LBF-I1.36.*

General specifications
Design / MountingCabinet installation
Electrical specifications
Rated voltage33 V
Rated current500 mA
Voltage protection level
Line/Linemax. 58 V category C1/C2 8/20µsec
max. 50 V category C3 1kV/µsec
max. 51 V category B2 10/700µsec
max. 55 V category D1 10/350µsec
Line/Earthmax. 1400 V category C1/C2 8/20µsec
max. 1100 V category C1/C2 1kV/µsec
max. 1000 V category B2 10/700µsec
max. 1300 V category D1 10/350µsec
Screen/Shield directly groundedmax. 25 V category C1/C2 8/20µsec
max. 20 V category D1 10/350µsec
Screen/Shield indirectly grounded (via GDT)max. 700 V category C1/C2 8/20µsec
max. 600 V category C3 1kV/µsec
max. 500 V category B2 10/700µsec
max. 600 V category D1 10/350µsec
Reaction time
Line/Linemax. 1 ns
Line/Earthmax. 100 ns
Screen/Shield-Earthmax. 100 ns
Overstressed fault modeacc. IEC 61643-21 line inoperable mode 3 lines 1 and 2 at 15,5kA (8/20µsec) lines 3 and 4 at 30kA (8/20µsec)
Series resistance in line1 Ω +/- 5 %
Impulse durability
Per line1 kA category D1 10/350µsec ,
5 kA category C1/C2 8/20µsec
Screen/Shield directly grounded5 kA category D1 10/350µsec
Screen/Shield indirectly grounded (via GDT)4 kA category D1 10/350µsec ,
10 kA category C1/C2 8/20µsec
Line/Line800 pF
Line/Earth16 pF
Directive conformity
Electromagnetic compatibility
Directive 2014/30/EUEN 61326-1:2013
Standard conformity
Degree of protectionIEC 60529
Fieldbus standardIEC 61158-2
Climatic conditionsIEC 60721
Shock resistanceEN 60068-2-27
Vibration resistanceEN 60068-2-6
Surge protectionIEC 61643-21
Ambient conditions
Ambient temperature-50 ... 80 °C (-58 ... 176 °F)
Storage temperature-50 ... 85 °C (-58 ... 185 °F)
Relative humidity≤ 95 % non-condensing
Shock resistance15 g 11 ms
Vibration resistance1 g , 10 ... 150 Hz
Mechanical specifications
Connection typescrew terminals
Core cross-sectionflexible wire 2.5 mm2 solid wire max. 4 mm2
Housing materialPolyamide PA 6.6
Degree of protectionIP20
MassProtection Module 20 g , base module 40 g
Mounting35 mm DIN mounting rail
Data for application in connection with hazardous areas
EU-type examination certificateKEMA 09 ATEX 0191 X
MarkingEx-Hexagon II 2(1)G Ex ia [ia Ga] IIC T4/T5/T6 Gb
Voltage30 V
Current500 mA
Internal capacitancenegligible 0 nF
Internal inductancenegligible 0 µH
CertificateKEMA 09 ATEX 0190 X
MarkingEx-Hexagon II 3G Ex ic IIC T4/T5/T6 Gc , Ex-Hexagon II 3G Ex nA IIC T4/T5/T6 Gc
Voltage Ui33 V
Current Ii500 mA
Internal capacitance Cinegligible 0 nF
Directive conformity
Directive 2014/34/EUEN 60079-0:2012 , EN 60079-11:2012 , EN 60079-15:2010 , EN 60079-26:2007
International approvals
CSA approvalCSA 2437472
Control drawing116-0361
Approved forClass I, Zone 1, AEx/Ex ia IIC T4...T6,
Class I, Zone 2, AEx nC IIC T4...T6,
Class I, Zone 2, Ex nL IIC T4...T6,
Class I, Zone 2, AEx/Ex nA IIC T4...T6
Class I Div. 1, GP A, B, C, D T4...T6,
Class I Div. 2, GP A, B, C, D T4...T6,
Class I Div. 2, GP A, B, C, D T4...T6
IECEx approvalIECEx KEM 09.0088X
Approved forEx ia [ia Ga] IIC T4/T5/T6 Gb ,
Ex ic IIC T4/T5/T6 Gc , Ex nA IIC T4/T5/T6 Gc
Certificates and approvals
Marine approvalpending
General information
Supplementary informationEC-Type Examination Certificate, Statement of Conformity, Declaration of Conformity, Attestation of Conformity and instructions have to be observed where applicable. For information see


ECLASS 11.027242692
ECLASS 10.0.127242692
ECLASS 9.027242692
ECLASS 8.027242692
ECLASS 5.127242692
ETIM 8.0EC002584
ETIM 7.0EC002584
ETIM 6.0EC002584
ETIM 5.0EC001604
UNSPSC 12.139121610

Documents: DP-LBF-I1.36.*

ManualsLanguageFile TypeFile Size
Manual DP-LBF-I1.36*ENGPDF1134 KB
Instruction manuals
ИнструкцииBULPDF199 KB
Návod k poużitíCZEPDF193 KB
Instruktions manualDANPDF0 KB
Instruction manualENGPDF66 KB
KasutusjuhendESTPDF189 KB
KäyttöohjeFINPDF0 KB
Manuel d'instructionsFRAPDF131 KB
BetriebsanleitungGERPDF68 KB
Οδηγίες χρήσηςGREPDF0 KB
HandleidingHOLPDF194 KB
Instruction manual / BetriebsanleitungHRVPDF192 KB
Használati útmutatóHUNPDF194 KB
Manuale di istruzioniITAPDF129 KB
Lietošanas pamācībaLAVPDF191 KB
Instrukciju vadovasLITPDF192 KB
Instrukcja obsługiPOLPDF195 KB
Manual de instruçõesPORPDF195 KB
Manual de utilizareRONPDF0 KB
Návod na poużitieSLKPDF193 KB
Navodila za uporaboSLVPDF192 KB
Manual de instruccionesSPAPDF131 KB
ManualSWEPDF190 KB


CADFile TypeFile Size
Dimension drawing 2-D (DXF) / Abmessungszeichnung 2-D (DXF)ZIP754 KB

Approvals+Certificates: DP-LBF-I1.36.*

Statements of complianceCertificate No.File TypeFile Size
EU-Declaration of conformity / EU-KonformitätserklärungDOC-0688BPDF91 KB
Canada USA CSACoC 2437472 cUsPDF49 KB
EAC VELES EAC TP TC 012/2011EAEC RU C-DE.AD07.B.04575/22PDF2397 KB
Europe KEMA ATEX Category 3 GKEMA 09 ATEX 0190XPDF1022 KB
India PESO (India) CCOEA/P/HQ/KA/104/5815 (P482701)PDF78 KB
KEMA Ex i and Ex n IECEx Certificate of ConformityIECEx KEM 09.0088XLINK---
Control drawings
Control Drawing CSA / Control Drawing CSA   PDF442 KB

Function: DP-LBF-I1.36.*

The modular surge protector for fieldbus consists of a base (DB …), and a plug-in module (DP-LBF-I1.36*) and is in accordance with IEC 61158-2. It directs power surges to earth via gas discharge tubes, protecting field devices. The device is certified intrinsically safe for circuits in hazardous area Zone 0 … 2/Div. 1 … 2, and for DART fieldbus. The surge protector is installed in Zone 1 … 2 or Div. 1 … 2.

Choices support all concepts: interrupting/non-interrupting module exchange and direct/indirect grounding of the shield. The plug-in module can be exchanged without tools.

The surge protectors support coordinated use in a lightning protection zone concept in accordance with IEC 61312-1. Installation in cabinets or junction boxes requires a minimum amount of wiring.