Serviceline Industrial Sensors
Serviceline Explosion Protection

NAMUR Resistor Network F-NR2-Ex1

  • 1-channel
  • Dry contact input
  • For line fault detection (LFD)

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  F-NR2-Ex1

Product Description
NAMUR Resistor Network
Rated voltagemax. 20 V DC
Electrical specifications
Resistor1.5 kΩ/0.6 W
10 kΩ/0.6 W
Ambient conditions
Ambient temperature-40 ... 60 °C (-40 ... 140 °F)
Mechanical specifications
Degree of protectionIP20
Connectionscrew terminals
Core cross-sectionmax. 1.5 mm2
Cable0.75 mm2 x 150 mm
Massapprox. 20 g
Dimensions∅15.5 x 35 mm (0.61 x 1.38 inch)
Data for application in connection with hazardous areas
CertificateDOC-0053 , see instruction manuals
Temperature classT5
Voltage Ui20 V
Power Pi0.6 W
Ambient temperature60 °C (140 °F)
Internal capacitance Ci0 F
Internal inductance Li 0 H
General information
Supplementary informationObserve the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see

Documents: F-NR2-Ex1

Instruction leafletsLanguageFile TypeFile Size
Operating instructions F-NR*-Ex1 / Betriebsanleitung F-NR*-Ex1ALLPDF69 KB

Approvals+Certificates: F-NR2-Ex1

Statements of complianceCertificate No.File TypeFile Size
Declaration of Conformity Simple Apparatus / Konformitätserklärung Einfaches BetriebsmittelDOC-0053PDF47 KB
EAC NANIO "CCVE" EAC TP TC 012/2011TC RU C-DE.AA87.B.00210PDF1396 KB

Function: F-NR2-Ex1

The NAMUR Resistor Network is used to monitor lead breakage and short circuit detection in switch amplifier circuits controlled by mechanical contacts.

The component is installed directly to the control contact or inside its terminal box.

The component can be used with all switch amplifiers featuring line fault detection.