Serviceline
Serviceline Industrial Sensors
Phone: 330-486-0001
Fax: 330-405-4710
Serviceline Explosion Protection
Phone: 330-486-0002
Fax: 330-963-5827

Inductive sensor NBB20-U4K-N0

NBB20-U4K-N0
  • Sensor head bidirectional and rotatable
  • 20 mm flush
  • 2 LEDs indicator for 360° visibility
Unit Price:  133.00  USD
 Please contact the Serviceline for exact delivery estimation


NAMUR sensors must be operated with approved switch amplifiers. Please find suitable devices below:

Download the complete datasheet as a PDF:


Datasheet excerpt: Technical data of NBB20-U4K-N0

General specifications
Switching functionNormally closed (NC)
Output typeNAMUR
Rated operating distance20 mm
Installationflush
Assured operating distance0 ... 16.2 mm
Actual operating distance18 ... 22 mm typ. 20 mm
Reduction factor rAl 0.33
Reduction factor rCu 0.31
Reduction factor r304 0.74
Output type2-wire
Nominal ratings
Nominal voltage8.2 V (Ri approx. 1 kΩ)
Switching frequency0 ... 300 Hz
Hysteresistyp. 5 %
Reverse polarity protectionreverse polarity protected
Short-circuit protectionyes
Current consumption
Measuring plate not detected≥ 2.2 mA
Measuring plate detected≤ 1 mA
Switching state indicatorLED, yellow
Functional safety related parameters
MTTFd1697 a
Mission Time (TM)20 a
Diagnostic Coverage (DC)0 %
Compliance with standards and directives
Standard conformity
NAMUREN 60947-5-6:2000
IEC 60947-5-6:1999
Electromagnetic compatibilityNE 21:2007
Approvals and certificates
UL approvalcULus Listed, General Purpose
CSA approvalcCSAus Listed, General Purpose
CCC approvalCCC approval / marking not required for products rated ≤36 V
Ambient conditions
Ambient temperature-25 ... 100 °C (-13 ... 212 °F)
Storage temperature-40 ... 100 °C (-40 ... 212 °F)
Mechanical specifications
Connection typescrew terminals
Information for connectionA maximum of two conductors with the same core cross section may be mounted on one terminal connection!
tightening torque 1.2 Nm + 10 %
Core cross-sectionup to 2.5 mm2
Minimum core cross-sectionwithout wire end ferrule 0.5 mm2 , with connector sleeves 0.34 mm2
Maximum core cross-sectionwithout wire end ferrule 2.5 mm2 , with connector sleeves 1.5 mm2
Housing materialPA/metal
Sensing facePA
Degree of protectionIP68 / IP69K
Mass225 g
NoteTightening torque: 1.8 Nm (housing)
General information
Use in the hazardous areasee instruction manuals
Category1G; 2G; 3G

Documents: NBB20-U4K-N0

Instructions, short instructions, safety informationLanguageFile TypeFile Size
Instruction manualENGPDF60 KB
Manuel d'instructionsFRAPDF63 KB
BetriebsanleitungGERPDF62 KB
Manuale di istruzioniITAPDF59 KB
Manual de instruccionesSPAPDF62 KB
Technical information
Installation conditionsENGPDF209 KB
EinbaubedingungenGERPDF203 KB
warunki montażuPOLPDF221 KB

CAD+CAE: NBB20-U4K-N0

CADFile TypeFile Size
3-D model in IGS format / 3-D-Modell im IGS-FormatIGS2629 KB
3-D model in STP format / 3-D-Modell im STP-FormatSTP2003 KB

Approvals+Certificates: NBB20-U4K-N0

Statements of complianceCertificate No.File TypeFile Size
EU-Declaration of conformity / EU-KonformitätserklärungDOC-1711APDF350 KB
Certificates
EU PTB ATEX ia 2G, 1G, 1D s. certificatePTB 00 ATEX 2032 XPDF29293 KB
Europe Pepperl+Fuchs Certificate ATEX Category 3PF13CERT2895XPDF1101 KB
US CA CSA1007121 (LR96321-2)PDF101 KB
US CA UL General PurposeE87056LINK---

Associated Products: NBB20-U4K-N0

Accessories
40.00  USD

In stock

Modular mounting bracket fa