Serviceline Industrial Sensors
Serviceline Explosion Protection

Inductive sensor NBB20-U1-B3B

NBB20-U1-B3B
  • Sensor head bidirectional and rotatable
  • 20 mm flush
  • A/B slave with extended addressing possibility for up to 62 slaves
  • Adjustable sensor head
  • NO/NC programmable
  • Oscillator monitoring
  • On/Off delay (disconnectable)

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-U1-B3B

General specifications
Switching functionNormally open/closed (NO/NC) programmable
Output typeAS-Interface
Rated operating distance20 mm
Installationflush
Assured operating distance0 ... 16.2 mm
Actual operating distance18 ... 22 mm typ. 20 mm
Reduction factor rAl 0.4
Reduction factor rCu 0.35
Reduction factor r304 0.85
Slave typeA/B slave
AS-Interface specificationV3.0
Required master specification≥ V2.1
Output type2-wire
Nominal ratings
Operating voltage26.5 ... 31.9 V via AS-i bus system
Switching frequency0 ... 150 Hz
Hysteresis1 ... 15 typ. 5 %
Reverse polarity protectionreverse polarity protected
No-load supply current≤ 25 mA
Time delay before availability≤ 1000 ms
Operating voltage indicatorLED, green
Switching state indicatorLED, yellow
Error indicatorLED, red
Functional safety related parameters
MTTFd1330 a
Mission Time (TM)20 a
Diagnostic Coverage (DC)0 %
Compliance with standards and directives
Standard conformity
StandardsEN 60947-5-2:2007
IEC 60947-5-2:2007
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 ... 70 °C (-13 ... 158 °F)
Storage temperature-40 ... 85 °C (-40 ... 185 °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 with epoxy powder coating
Sensing facePBT
Housing baseplastic
Degree of protectionIP68 / IP69K

Documents: NBB20-U1-B3B

Technical informationLanguageFile TypeFile Size
Installation conditionsENGPDF196 KB
EinbaubedingungenGERPDF133 KB

Approvals+Certificates: NBB20-U1-B3B

CertificatesCertificate No.File TypeFile Size
Canada USA CSA Ordinary Location1007121PDF99 KB
US CA UL General PurposeE87056LINK---

Associated Products: NBB20-U1-B3B

Accessories
Receptacles, M12/M20; plastic versionfa
Modular mounting bracket fa
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