Serviceline Industrial Sensors
Serviceline Explosion Protection

Switch Amplifier, Timer Relay KFU8-SR-1.3L.V

  • 1-channel signal conditioner
  • Universal usage at different power supplies
  • 3-wire PNP/NPN sensor or push-pull input
  • 2 relay contact outputs
  • Adjustable energized/de-energized delay

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  KFU8-SR-1.3L.V

General specifications
Signal typeDigital Input
Connectionterminals 14, 15
Rated voltage20 ... 48 V DC or 90 ... 253 V AC , 45 ... 65 Hz
Rated current≤ 230 mA
Power dissipation2.3 W
Power consumptionmax. 4.5 W
Connection sidefield side
Connectionterminals 1+, 2, 3-
Rated values22 ... 24 V DC / 100 mA , see additional information
Short-circuit currentmax. 125 mA
Switching pointPNP:
0-signal: < 12.5 V
1-signal: > 13.5 V
NPN and push-pull output:
0-signal: < 4.5 V
1-signal: > 5.5 V
Connection sidecontrol side
Connectionoutput I: terminals 7, 8, 9
output II: terminals 10, 11, 12
Output I, IIsignal, relay
Contact loading250 V AC / 2 A / cos φ ≥ 0.7 ; 125 V AC/4 A/ cos φ > 0.7 ; 40 V DC / 2 A
Mechanical life20 x 106 switching cycles
Electrical life0.2 x 106 switching cycles (40 V DC, 2 A, ohmic)
0.4 x 106 switching cycles (253 V AC, 2 A, cos φ = 1)
0.25 x 106 switching cycles (253 V AC, 2 A, cos φ = 0.7)
Minimum load50 mW, 5 V DC
Energized/De-energized delay≤ 90 ms / ≤ 90 ms
Transfer characteristics
Switching frequency≤ 5 Hz for delay 0 s
adjustable energized/de-energized delay: 0 ... 79 s
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 supplyreinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Output/Outputreinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Display elementsLEDs
Control elementsDIP-switch
Configurationvia DIP switches
Labelingspace for labeling at the front
Directive conformity
Electromagnetic compatibility
Directive 2014/30/EUEN 61326-1:2013 (industrial locations)
Low voltage
Directive 2014/35/EUEN 61010-1:2010
Electromagnetic compatibilityNE 21:2012
Degree of protectionIEC 60529:2001
Ambient conditions
Ambient temperature-20 ... 60 °C (-4 ... 140 °F)
Mechanical specifications
Degree of protectionIP20
Connectionscrew terminals
Massapprox. 166 g
Dimensions20 x 119 x 115 mm (0.8 x 4.7 x 4.5 inch) , housing type B2
Mountingon 35 mm DIN mounting rail acc. to EN 60715:2001
Data for application in connection with hazardous areas
Supply48 V DC
CertificatePF 10 CERT 1417 X
MarkingEx-Hexagon II 3G Ex nA nC IIC T4 Gc
Output I, II
Contact loading50 V AC/2 A/cos φ > 0.7; 40 V DC/1 A resistive load
Directive conformity
Directive 2014/34/EUEN 60079-0:2012+A11:2013 , EN 60079-15:2010
General information
Supplementary informationObserve the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see


ECLASS 11.027210121
ECLASS 10.0.127210121
ECLASS 9.027210121
ECLASS 8.027210121
ECLASS 5.127210121
ETIM 8.0EC001485
ETIM 7.0EC001485
ETIM 6.0EC001485
ETIM 5.0EC001485
UNSPSC 12.132101514

Documents: KFU8-SR-1.3L.V

ManualsLanguageFile TypeFile Size
System Manual ENGPDF3489 KB
SystemhandbuchGERPDF3506 KB
Instruction manuals
ИнструкцииBULPDF53 KB
Návod k poużitíCZEPDF47 KB
Instruktions manualDANPDF47 KB
Instruction manualENGPDF41 KB
KasutusjuhendESTPDF44 KB
KäyttöohjeFINPDF44 KB
Manuel d'instructionsFRAPDF79 KB
BetriebsanleitungGERPDF43 KB
Οδηγίες χρήσηςGREPDF55 KB
HandleidingHOLPDF56 KB
Instruction manual / BetriebsanleitungHRVPDF55 KB
Használati útmutatóHUNPDF55 KB
Manuale di istruzioniITAPDF77 KB
Lietošanas pamācībaLAVPDF54 KB
Instrukciju vadovasLITPDF55 KB
Instrukcja obsługiPOLPDF57 KB
Manual de instruçõesPORPDF56 KB
Manual de utilizareRONPDF56 KB
Návod na poużitieSLKPDF115 KB
Manual de instruccionesSPAPDF79 KB


CADFile TypeFile Size
3-D model / 3-D-ModellSTP2510 KB

Approvals+Certificates: KFU8-SR-1.3L.V

CertificatesCertificate No.File TypeFile Size
Europe Pepperl+Fuchs Certificate of Compliance ATEX Category 3PF10CERT1417 XPDF189 KB
Kazakhstan Russia Belarus Pepperl+Fuchs Declaration of Conformity Low Voltage DirectiveRU D-DE.AA71.B.00184PDF1404 KB

Function: KFU8-SR-1.3L.V

This signal conditioner converts the state of 3-wire sensors (PNP or NPN) or sensors with push-pull output stages into two relay outputs.

It has one input and two form C changeover relay outputs.

The switch amplifier has an adjustable energized/de-energized delay for the relay outputs.

The start-up time of the device is as long as the time setting value + 500 ms.