Serviceline Industrial Sensors
Serviceline Explosion Protection

Switch Amplifier WE 77/Ex-1 115V

WE 77/Ex-1 115V
  • 1-channel
  • Control circuit EEx ia IIC
  • 115 V AC supply voltage
  • Reversible mode of operation
  • Lead breakage (LB) monitoring
  • 1 relay contact output (change-over contact)

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, also apply to Pepperl+Fuchs AG.

Download the complete datasheet as a PDF:

Datasheet excerpt: Technical data of  WE 77/Ex-1 115V

General specifications
Signal typeDigital Input
Connectionterminals 11, 12
Rated voltage103.5 ... 126 V AC , 45 ... 65 Hz
Power dissipation1.6 W
Power consumptionapprox. 2.3 VA
Connection sidefield side
Connectionterminals 1-, 2+
Rated valuesacc. to EN 60947-5-6 (NAMUR), see system description for electrical data
Open circuit voltage/short-circuit currentapprox. 8 V DC / approx. 8 mA
Switching point/switching hysteresis1.2 ... 2.1 mA / approx. 0.2 mA
Pulse/Pause ratiomin. 0.5 ms / min. 0.5 ms
Line fault detectionbreakage I ≤ 0.1 mA
Connection sidecontrol side
Connectionterminals 7, 8, 9
Outputsignal ; relay
Contact loading253 V AC/2 A/500 VA/cos φ min. 0,7; 125 V AC/4 A/500 VA cos φ min. 0,7; 40 V DC/2 A/80 W ohmic load
Energized/De-energized delayapprox. 10 ms / approx. 20 ms
Mechanical life107 switching cycles
Transfer characteristics
Switching frequency< 10 Hz
Galvanic isolation
Input/Outputreinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Input/power supplyreinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Output/power supplybasic insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Display elementsLED
Directive conformity
Electromagnetic compatibility
Directive 2014/30/EUEN 61326-1:2013 (industrial locations)
Low voltage
Directive 2014/35/EUEN 61010-1:2010
Degree of protectionIEC 60529
Ambient conditions
Ambient temperature-20 ... 60 °C (-4 ... 140 °F)
Mechanical specifications
Degree of protectionIP20
Connectionscrew terminals
Massapprox. 390 g
Dimensions40 x 104 x 110 mm (1.6 x 4.1 x 4.3 inch)
Data for application in connection with hazardous areas
EU-Type Examination CertificatePTB 02 ATEX 2065
MarkingEx-Hexagon II (1)GD [EEx ia] IIC [circuit(s) in zone 0/1/2]
InputEx ia
Voltage13.4 V DC
Current31 mA
Power145 mW (trapezoid characteristic curve)
Maximum safe voltage126.5 V AC (Attention! The rated voltage can be lower.)
Maximum safe voltage253 V AC (Attention! The rated voltage can be lower.)
Galvanic isolation
Input/Outputsafe electrical isolation acc. to IEC/EN 60079-11, voltage peak value 375 V
Input/power supplysafe electrical isolation acc. to IEC/EN 60079-11, voltage peak value 375 V
Directive conformity
Directive 2014/34/EUEN 60079-0:2012+A11:2013 , EN 60079-11:2012
International approvals
UL approval
Control drawing116-0115C (cULus)
General information
Supplementary informationObserve the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see

Documents: WE 77/Ex-1 115V

ManualsLanguageFile TypeFile Size
Brief instructions WE-System/RPIENGPDF664 KB
Kurzanleitung WE-System/RPIGERPDF1447 KB
Instruction manuals
ИнструкцииBULPDF137 KB
Návod k poużitíCZEPDF132 KB
Instruktions manualDANPDF0 KB
Instruction manualENGPDF136 KB
KasutusjuhendESTPDF128 KB
KäyttöohjeFINPDF128 KB
Manuel d'instructionsFRAPDF132 KB
BetriebsanleitungGERPDF137 KB
Οδηγίες χρήσηςGREPDF139 KB
HandleidingHOLPDF132 KB
Instruction manual / BetriebsanleitungHRVPDF131 KB
Használati útmutatóHUNPDF0 KB
Manuale di istruzioniITAPDF131 KB
Lietošanas pamācībaLAVPDF131 KB
Instrukciju vadovasLITPDF132 KB
Instrukcja obsługiPOLPDF0 KB
Manual de instruçõesPORPDF132 KB
Manual de utilizareRONPDF131 KB
Návod na poużitieSLKPDF131 KB
Navodila za uporaboSLVPDF3 KB
Manual de instruccionesSPAPDF132 KB
ManualSWEPDF129 KB

Approvals+Certificates: WE 77/Ex-1 115V

Statements of complianceCertificate No.File TypeFile Size
EU-Declaration of conformity / EU-KonformitätserklärungDOC-0972APDF121 KB
Canada UL cULE106378 cUL (QUZW7)LINK---
Europe PTB ATEX Category (1) GDPTB 02 ATEX 2065PDF663 KB
Control drawings
Control drawing UL / Control drawing UL   PDF104 KB