In order to give you a better service Pepperl+Fuchs uses cookies. By continuing to browse the site you are agreeing to our use of cookies. I agree.
Serviceline Industrial Sensors
Serviceline Explosion Protection
Industrial Sensors

Inductive sensor NCB20-L2-N0-V1

NCB20-L2-N0-V1
  • Sensor head bidirectional and rotatable
  • 20 mm flush
  • Quick mounting bracket
  • Usable up to SIL 2 acc. to IEC 61508


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, also apply to Pepperl+Fuchs AG.

Download the complete datasheet as a PDF:


Datasheet excerpt: Technical data of  NCB20-L2-N0-V1

General specifications
Switching functionNormally closed (NC)
Output typeNAMUR
Rated operating distance20 mm
Installationflush
Assured operating distance0 ... 16.2 mm
Actual operating distance18 ... 22 mm
Reduction factor rAl 0.33
Reduction factor rCu 0.31
Reduction factor r304 0.74
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
MTTFd1660 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
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
EAC conformityTR CU 012/2011
Protection classII
Rated insulation voltage253 V
Rated impulse withstand voltage4000 V
UL approval
Ordinary LocationE87056
Hazardous LocationE501628
Control drawing116-0451
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 typeConnector plug M12 x 1 , 4-pin
Housing materialPA
Sensing facePA
Degree of protectionIP66 / IP69K
Mass130 g
Equipment protection level Ga
CE marking[*PD-Z02585A*]
ATEX markingEx-Hexagon II 1G Ex ia IIC T6…T1 Ga
The Ex-related marking can also be printed on the enclosed label.
StandardsEN 60079-0:2012+A11:2013 EN 60079-11:2012
Ignition protection "Intrinsic safety"
Use is restricted to the following stated conditions
Appropriate typeNCB20-L2-N0...
Effective internal capacitancemax. 110 nF ; a cable length of 10 m is considered.
Effective internal inductancemax. 200 µH ; a cable length of 10 m is considered.
Ambient temperatureDetails of the correlation between the type of circuit connected, the maximum permissible ambient temperature, the temperature class, and the effective internal reactance values can be found on the EC-type examination certificate. Note: Use the temperature table for category 1 !!! The 20 % reduction in accordance with EN 1127-1 has already been applied to the temperature table for category 1.
Equipment protection level Gb
CE marking[*PD-Z02585A*]
ATEX markingEx-Hexagon II 1G Ex ia IIC T6…T1 Ga
The Ex-related marking can also be printed on the enclosed label.
StandardsEN 60079-0:2012+A11:2013, EN 60079-11:2012
Ignition protection "Intrinsic safety"
Use is restricted to the following stated conditions
Appropriate typeNCB20-L2-N0...
Effective internal capacitancemax. 110 nF ; a cable length of 10 m is considered.
Effective internal inductancemax. 200 µH ; a cable length of 10 m is considered.
Maximum permissible ambient temperatureDetails of the correlation between the type of circuit connected, the maximum permissible ambient temperature, the temperature class, and the effective internal reactance values can be found on the EC-type examination certificate.
Equipment protection level Gc (ic)
CertificatePF 13 CERT 2895 X
CE marking[*PD-Z02586A*]
ATEX markingEx-Hexagon II 3G Ex ic IIC T6…T1 Gc
The Ex-related marking can also be printed on the enclosed label.
StandardsEN 60079-0:2012, EN 60079-11:2012 Ignition protection category "ic"
Use is restricted to the following stated conditions
Effective internal capacitancemax. 110 nF ; a cable length of 10 m is considered.
Effective internal inductancemax. 200 µH ; A cable length of 10 m is considered.
Special conditions
for Pi=34 mW, Ii=25 mA, T666 °C (150.8 °F)
for Pi=34 mW, Ii=25 mA, T581 °C (177.8 °F)
for Pi=34 mW, Ii=25 mA, T4-T1100 °C (212 °F)
for Pi=64 mW, Ii=25 mA, T666 °C (150.8 °F)
for Pi=64 mW, Ii=25 mA, T581 °C (177.8 °F)
for Pi=64 mW, Ii=25 mA, T4-T1100 °C (212 °F)
for Pi=169 mW, Ii=52 mA, T645 °C (113 °F)
for Pi=169 mW, Ii=52 mA, T560 °C (140 °F)
for Pi=169 mW, Ii=52 mA, T4-T189 °C (192.2 °F)
for Pi=242 mW, Ii=76 mA, T630 °C (86 °F)
for Pi=242 mW, Ii=76 mA, T545 °C (113 °F)
for Pi=242 mW, Ii=76 mA, T4-T174 °C (165.2 °F)
Equipment protection level Gc (nL)
Standard conformityEN 60079-15:2005 Ignition protection category "n"
Use is restricted to the following stated conditions
Effective internal capacitance Cimax. 110 nF ; a cable length of 10 m is considered.
Effective internal inductance Limax. 200 µH ; A cable length of 10 m is considered.
GeneralThe apparatus has to be operated according to the appropriate data in the data sheet and in this instruction manual. The data stated in the data sheet are restricted by this operating instruction!
The special conditions must be observed!
The ATEX Directive applies only to the use of apparatus under atmospheric conditions.
If you use the device outside atmospheric conditions, consider that the permissible safety parameters should be reduced.
Special conditions
for Pi=34 mW, Ii=25 mA, T666 °C (150.8 °F)
for Pi=34 mW, Ii=25 mA, T581 °C (177.8 °F)
for Pi=34 mW, Ii=25 mA, T4-T1100 °C (212 °F)
for Pi=64 mW, Ii=25 mA, T666 °C (150.8 °F)
for Pi=64 mW, Ii=25 mA, T581 °C (177.8 °F)
for Pi=64 mW, Ii=25 mA, T4-T1100 °C (212 °F)
for Pi=169 mW, Ii=52 mA, T645 °C (113 °F)
for Pi=169 mW, Ii=52 mA, T560 °C (140 °F)
for Pi=169 mW, Ii=52 mA, T4-T189 °C (192.2 °F)
for Pi=242 mW, Ii=76 mA, T630 °C (86 °F)
for Pi=242 mW, Ii=76 mA, T545 °C (113 °F)
for Pi=242 mW, Ii=76 mA, T4-T174 °C (165.2 °F)
Equipment protection level Da
ATEX markingEx-Hexagon II 1D Ex ia IIIC T135°C Da
The Ex-related marking can also be printed on the enclosed label.
StandardsEN 60079-0:2012+A11:2013 EN 60079-11:2012
Ignition protection "Intrinsic safety" Use is restricted to the following stated conditions
Appropriate typeNCB20-L2-N0...
Effective internal capacitancemax. 110 nF ; a cable length of 10 m is considered.
Effective internal inductancemax. 200 µH ; a cable length of 10 m is considered.
Equipment protection level Dc
CE marking[*PD-Z02585A*]
ATEX markingEx-Hexagon II 3D IP69K T 112 °C (233.6 °F) X
StandardsEN 50281-1-1
Protection via housing
Use is restricted to the following stated conditions
Special conditions
Maximum heating (Temperature rise)Values can be obtained from the following list, depending on the max. operating voltage Ub max and the minimum series resistance Rv.
at UBmax=9 V, RV=562 Ω12 K
using an amplifier in accordance with EN 60947-5-612 K
Equipment protection level Dc (tc)
CE marking[*PD-Z02586A*]
ATEX markingEx-Hexagon II 3D Ex tc IIIC T80°C Dc
The Ex-related marking can also be printed on the enclosed label.
StandardsEN 60079-0:2012+A11:2013, EN 60079-31:2014
Protection by enclosure "tc" Some of the information in this instruction manual is more specific than the information provided in the datasheet.
GeneralThe corresponding datasheets, declarations of conformity, EC-type examination certificates, certifications, and control drawings, where applicable (see datasheets), form an integral part of this document. These documents can be found at www.pepperl-fuchs.com. The maximum surface temperature of the device was determined without a layer of dust on the apparatus. Some of the information in this instruction manual is more specific than the information provided in the datasheet.
Special conditions
Maximum permissible ambient temperature TUmaxValues can be obtained from the following list, depending on the max. operating voltage Ub max and the minimum series resistance Rv.
at UBmax=9 V, RV=562 Ω57 °C (134.6 °F)
using an amplifier in accordance with EN 60947-5-657 °C (134.6 °F)
Equipment protection level Dc (tD)
GeneralThe apparatus has to be operated according to the appropriate data in the data sheet and in this instruction manual.
The maximum surface temperature has been determined in accordance with method A without a dust layer on the equipment.
The data stated in the data sheet are restricted by this operating instruction!
The special conditions must be adhered to!
Special conditions
Minimum series resistance RVA minimum series resistance RV is to be provided between the power supply voltage and the proximity switch in accordance with the following list. This can also be assured by using a switch amplifier.
Maximum permissible ambient temperature TUmaxValues can be obtained from the following list, depending on the max. operating voltage Ub max and the minimum series resistance Rv.
at UBmax=9 V, RV=562 Ω57 °C (134.6 °F)
using an amplifier in accordance with EN 60947-5-657 °C (134.6 °F)
General information
Use in the hazardous areasee instruction manuals
Category1G; 2G; 3G; 3D

Documents: NCB20-L2-N0-V1

Instruction manualsLanguageFile TypeFile Size
Instruction manualENGPDF180 KB
BetriebsanleitungGERPDF179 KB
Technical information
technical information (TI)ENGPDF96 KB
technische Information (TI)GERPDF104 KB

Approvals+Certificates: NCB20-L2-N0-V1

Statements of complianceCertificate No.File TypeFile Size
EU-Declaration of conformity / EU-KonformitätserklärungDOC-1745APDF347 KB
Certificates
Canada USA CSA Ordinary Location1007121PDF99 KB
Canada USA UL Hazardous LocationE501628:1:1PDF405 KB
Canada USA UL Ordinary Location20170306-E87056PDF407 KB
EU PTB ATEX ia 2G, 1G, 1D s. certificatePTB 00 ATEX 2032 XPDF29293 KB
Europe Pepperl+Fuchs ATEX Category 3 D CertificatePF15CERT3774XPDF1001 KB
Europe Pepperl+Fuchs Certificate ATEX Category 3PF13CERT2895XPDF495 KB
Pepperl+Fuchs Declaration of Conformity Functional SafetyPF 10 CERT 1666APDF1025 KB
Russia NANIO "CCVE"TC RU C-DE.AA87.B.00394PDF3971 KB
Worldwide PTB IECEx iaIECEx PTB 11.0021XLINK---
Control drawings
Control drawing UL / Control drawing UL   PDF294 KB

Associated Products: NCB20-L2-N0-V1

Accessories

Female cordset, M12, 2-pin, NAMUR, PUR cablefa

Female cordset, M12, 2-pin, NAMUR, PUR cablefa
Modular mounting bracket fa
General Notes Relating to Pepperl+Fuchs Product Information
Quick Links
Inductive Safety Sensors SIL 2 PL d

As the SIL 2/PL d inductive safety sensors have no dead band, data transfer can occur with no minimum distance between sensor and target. Discover the optimized portfolio for demanding environments.

Pepperl+Fuchs AG
Lilienthalstraße 200
68307 Mannheim
Germany
info@de.pepperl-fuchs.com
phone +49 621 776-0

© 2020 All Rights Reserved.

Pepperl+Fuchs is a leading developer and manufacturer of electronic sensors and components for the global automation market. Continuous innovation, enduring quality, and steady growth have been the foundation of our success for more than 70 years. Pepperl+Fuchs employs 6,300 people worldwide and has manufacturing facilities in Germany, USA, Singapore, Hungary, Indonesia and Vietnam, most of them ISO 9001 certified.