Serviceline Industrial Sensors
Serviceline Explosion Protection

Inductive sensor NBB20-U4K-N0

NBB20-U4K-N0
  • Sensor head bidirectional and rotatable
  • 20 mm flush
  • 2 LEDs indicator for 360° visibility


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

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  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
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
IECEx approval
Equipment protection level GaIECEx PTB 11.0021X
Equipment protection level GbIECEx PTB 11.0021X
Equipment protection level DaIECEx PTB 11.0021X
ATEX approval
Equipment protection level GaPTB 00 ATEX 2032 X
Equipment protection level GbPTB 00 ATEX 2032 X
Equipment protection level DaPTB 00 ATEX 2032 X
UL approval
Ordinary LocationE87056
Hazardous LocationE501628
Control drawing116-0451
CCC approval
Hazardous Location2020322315002303
NEPSI approval
NEPSI certificateGYJ16.1394X
CML approvalon request
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
Dimensions
Height40 mm
Width40 mm
Length118 mm
NoteTightening torque: 1.8 Nm (housing)
General information
Use in the hazardous areasee instruction manuals

Classifications

SystemClasscode
ECLASS 13.027274001
ECLASS 12.027274001
ECLASS 11.027270101
ECLASS 10.0.127270101
ECLASS 9.027270101
ECLASS 8.027270101
ECLASS 5.127270101
ETIM 9.0EC002714
ETIM 8.0EC002714
ETIM 7.0EC002714
ETIM 6.0EC002714
ETIM 5.0EC002714
UNSPSC 12.139121550

Details: NBB20-U4K-N0

Product Documentation: NBB20-U4K-N0

Language Selection:
Product informationLanguageFile TypeFile Size
Installation conditionsENGPDF195 KB
Safety and Security Documentation
Instruction manualENGPDF184 KB

Design / Simulation: NBB20-U4K-N0

Language Selection:
CADLanguageFile TypeFile Size
CAD 3-D / CAD 3-DALLSTP2003 KB
CAD Portal / CAD PortalALLLINK---
CAE
CAE EPLAN Data Portal / CAE EPLAN Data PortalALLLINK---
EPLAN macro EDZ / EPLAN Makro EDZALLEDZ63 KB

Approvals: NBB20-U4K-N0

Language Selection:
CertificatesCertificate No.LanguageFile TypeFile Size
Canada USA UL Hazardous LocationE501628:1:1ALLPDF412 KB
Canada USA UL Ordinary LocationUL-CA-2119599-1 / UL-US-2123898-1ALLPDF547 KB
China SITIIAS CCC Ex Certificate2020322315002303 (Vietnam)ALLPDF5999 KB
EU PTB ATEX ia 2G, 1G, 1D s. certificatePTB 00 ATEX 2032 XALLPDF12357 KB
Japan CML Ex iaCML 21JPN2712XALLPDF468 KB
United Kingdom CML UKEX Category I M2 UKEX Category II 2 G UKEX Category II 1 D UKEX Category II 1 GCML 21UKEX2975XALLPDF420 KB
Worldwide PTB IECEx iaIECEx PTB 11.0021XALLLINK---
Control Drawings
Control drawing UL / Control drawing UL   ALLPDF294 KB
Declaration of Conformity
EU Declaration of Conformity (P+F) / EU-Konformitäterklärung (P+F)DOC-5078AALLPDF1334 KB
UK Declaration of Conformity (P+F)TDOC-6564AENGENGPDF1328 KB

Associated Products: NBB20-U4K-N0

Accessories

Single-channel terminal amplifier with line breakage detection, input for NAMUR sensors, DC 24 V supply voltage, standardized interface to prevent signal transmission errors, switching state display, LED yellowfa
Modular mounting bracket fa

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