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Technical Data: NBB20-U4K-N0General specifications
Switching element function NAMUR, NC
Rated operating distance 20 mm
Installation embeddable
Output polarity DC
Assured operating distance 0 ... 16.2 mm
Reduction factor rAl 0.33
Reduction factor rCu 0.31
Reduction factor r304 0.74
Nominal ratings
Nominal voltage 8.2 V (Ri approx. 1 kΩ)
Switching frequency 0 ... 300 Hz
Hysteresis typ. 5 %
Reverse polarity protected reverse polarity protected
Short-circuit protection yes
Current consumption
Measuring plate not detected ≥ 2.2 mA
Measuring plate detected ≤ 1 mA
Indication of the switching state LED, yellow
Compliance with standards and directives
Standard conformity
NAMUR EN 60947-5-6:2000
IEC 60947-5-6:1999
Electromagnetic compatibility NE 21:2007
Approvals and certificates
UL approval cULus Listed, General Purpose
CSA approval cCSAus Listed, General Purpose
CCC approval Products with a maximum operating voltage of ≤36 V do not bear a CCC marking because they do not require approval.
Ambient conditions
Ambient temperature -25 ... 100 °C (-13 ... 212 °F)
Storage temperature -40 ... 100 °C (-40 ... 212 °F)
Mechanical specifications
Connection type screw terminals
Core cross-section ≤ 2.5 mm2
Housing material PA/metal
Sensing face PA
Protection degree IP68 / IP69K
Mass 225 g
Note Tightening torque: 1.8 Nm (housing)
Tightening torque: 1.0 Nm (Screw terminal)
General information
Use in the hazardous area see instruction manuals
Category 1G; 2G; 3G

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