Serviceline Industrial Sensors
Serviceline Explosion Protection

Zener Barrier Z965

  • 2-channel
  • AC version
  • Working voltage 13 V at 10 µA
  • Series resistance max. 115 Ω
  • Fuse rating 50 mA
  • DIN rail mounting
  • Star connection

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  Z965

General specifications
TypeAC version
Electrical specifications
Nominal resistance100 Ω
Series resistancemax. 115 Ω
Fuse rating50 mA
Hazardous area connection
Connectionterminals 1, 2; 3, 4
Safe area connection
Connectionterminals 5, 6; 7, 8
Working voltage
Supply loopmax. 13.6 V
Measurement loopmax. 13 V at 10 µA
Degree of protectionIEC 60529
Ambient conditions
Ambient temperature-20 ... 60 °C (-4 ... 140 °F)
Storage temperature-25 ... 70 °C (-13 ... 158 °F)
Relative humiditymax. 75 % , without condensation
Mechanical specifications
Degree of protectionIP20
Connectionscrew terminals
Core cross-sectionmax. 2 x 2.5 ... mm2
Massapprox. 150 g
Dimensions12.5 x 115 x 110 mm (0.5 x 4.5 x 4.3 inch)
Construction typemodular terminal housing , see system description
Mountingon 35 mm DIN mounting rail acc. to EN 60715:2001
Data for application in connection with hazardous areas
EU-type examination certificateBAS 01 ATEX 7005
MarkingEx-Hexagon II (1)GD, I (M1) [Ex ia Ga] IIC, [Ex ia Da] IIIC, [Ex ia Ma] I (-20 °C ≤ Tamb ≤ 60 °C) [circuit(s) in zone 0/1/2]
Voltage15 V
Current153 mA
Power570 mW
Maximum safe voltage250 V
Series resistancemin. 98 Ω
CertificateTÜV 99 ATEX 1484 X
MarkingEx-Hexagon II 3G Ex nA IIC T4 Gc [device in zone 2]
Directive conformity
Directive 2014/34/EUEN 60079-0:2012+A11:2013 , EN 60079-11:2012 , EN 60079-15:2010
International approvals
FM approval
Control drawing116-0118
UL approval
Control drawing116-0139 (cULus)
IECEx approvalIECEx BAS 09.0142
IECEx BAS 17.0091X
Approved for[Ex ia Ga] IIC , [Ex ia Da] IIIC , [Ex ia Ma] I
Ex ec IIC T4 Gc
General information
Supplementary informationObserve the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see


ECLASS 10.0.127219001
ECLASS 9.027219001
ECLASS 8.027219001
ECLASS 5.127210702
ETIM 8.0EC001485
ETIM 7.0EC001485
ETIM 6.0EC001485
ETIM 5.0EC002653
UNSPSC 12.139121018

Documents: Z965

ManualsLanguageFile TypeFile Size
Manual Zener Barriers Z-SystemENGPDF1203 KB
Handbuch Zenerbarrieren Z-SystemGERPDF1203 KB
Instruction manuals
Návod k poużitíCZEPDF197 KB
Instruktions manualDANPDF195 KB
Instruction manualENGPDF68 KB
KasutusjuhendESTPDF190 KB
KäyttöohjeFINPDF191 KB
Manuel d'instructionsFRAPDF136 KB
BetriebsanleitungGERPDF69 KB
Οδηγίες χρήσηςGREPDF0 KB
HandleidingHOLPDF0 KB
Instruction manual / BetriebsanleitungHRVPDF194 KB
Manuale di istruzioniITAPDF65 KB
Lietošanas pamācībaLAVPDF0 KB
Instrukciju vadovasLITPDF195 KB
Instrukcja obsługiPOLPDF138 KB
Manual de instruçõesPORPDF197 KB
Manual de utilizareRONPDF196 KB
Návod na poużitieSLKPDF196 KB
Navodila za uporaboSLVPDF194 KB
Manual de instruccionesSPAPDF133 KB
ManualSWEPDF192 KB

Approvals+Certificates: Z965

Statements of complianceCertificate No.File TypeFile Size
EU-Declaration of conformity / EU-KonformitätserklärungDOC-0060DPDF102 KB
Baseefa IECEx Certificate of ConformityIECEx BAS 17.0091XLINK---
Baseefa IECEx Certificate of ConformityIECEx BAS 09.0142LINK---
Brasil TUV Rheinland BrazilTÜV 14.0362PDF584 KB
China SITIIAS CCC Ex Certificate2020322316002775 (Bintan)PDF3587 KB
EAC Lenpromexpertiza (LPE) EAC TP TC 012/2011EAEC RU C-DE.AA71.B.00100/19PDF6852 KB
Europe Baseefa Group I (M1) ATEX Category (1) GDBAS 01 ATEX 7005PDF8525 KB
Europe TUV Nord II 3 G ATEX Category 3 GTÜV 99 ATEX 1484XPDF1460 KB
India PESO (India) CCOEA/P/HQ/MH/104/5723 (P454334)PDF314 KB
Japan TIISTC 15973PDF310 KB
Korea KOSHA09-AV4BO-0228/0229/0230PDF717 KB
SIMTARS IECEx Certificate of ConformityIECEx SIM 06.0012XLINK---
South Africa MASCMASC MS/17-0887PDF921 KB
USA Canada UL Hazardous Location Certificate of Compliance cULus UL E106378CoC 20190321 - E106378 RepRef 19960425PDF252 KB
USA FMFM 17 US 0370PDF416 KB
Worldwide Pepperl+Fuchs Functional Safety AssessmentCERT-5207PDF575 KB
Control drawings
Control drawing FM / Control drawing FM   PDF167 KB
Control drawing UL / Control drawing UL   PDF170 KB

Function: Z965

The Zener Barrier prevents the transfer of unacceptably high energy from the safe area into the hazardous area.

The zener diodes in the Zener Barrier are connected in the reverse direction. The breakdown voltage of the diodes is not exceeded in normal operation. If this voltage is exceeded, due to a fault in the safe area, the diodes start to conduct, causing the fuse to blow. The Zener Barrier has alternating polarities, i. e. interconnected zener diodes are employed and one side is grounded. The Zener Barrier can be used for both alternating voltage signals and direct voltage signals.

Depending on the application, increased or decreased intrinsic safety parameters apply for serial or parallel connection. For the detailed parameters refer to the Zener Barrier certificate. Application examples can be found in the system description of the Zener Barriers.