Serviceline
Serviceline Industrial Sensors
Serviceline Explosion Protection

Inductive sensor NBN3-F31-U8-K

NBN3-F31-U8-K
  • Direct mounting on standard actuators
  • Compact and stable housing
  • Fixed setting

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  NBN3-F31-U8-K

General specifications
Switching function2 x normally open (NO)
Rated operating distance3 mm
Installationflush mountable
Output polarityAC/DC
Assured operating distance0 ... 2.43 mm
Reduction factor rAl 0.45
Reduction factor rCu 0.38
Reduction factor r304 1
Reduction factor rSt37 1.04
Output type4-wire
Nominal ratings
Operating voltage20 ... 253 V AC/DC
Switching frequency25 Hz
Hysteresistyp. 3 %
Reverse polarity protectionyes
Short-circuit protectionyes
Voltage drop≤ 8 V
Operating current4 ... 400 mA
Off-state current≤ 1.7 mA
Operating voltage indicatorLED, green
Switching state indicatorLED, yellow
Functional safety related parameters
MTTFd529 a
Mission Time (TM)20 a
Diagnostic Coverage (DC)0 %
Compliance with standards and directives
Standard conformity
StandardsEN 60947-5-2:2007
EN 60947-5-2/A1:2012
IEC 60947-5-2:2007
IEC 60947-5-2 AMD 1:2012
Approvals and certificates
Protection classII
Rated insulation voltage253 V
Rated impulse withstand voltage4 kV
UL approvalcULus Listed, General Purpose
CSA approvalcCSAus Listed, General Purpose
Ambient conditions
Ambient temperature-25 ... 70 °C (-13 ... 158 °F)
Mechanical specifications
Connection typecable PVC , 5 m
Core cross-section0.5 mm2
Housing materialPBT
Sensing facePBT
Degree of protectionIP67

Approvals+Certificates: NBN3-F31-U8-K

CertificatesCertificate No.File TypeFile Size
Canada USA CSA Ordinary Location1007121PDF99 KB
Canada USA UL Ordinary Location20170306-E87056PDF407 KB

Associated Products: NBN3-F31-U8-K

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