Serviceline Industrial Sensors
Serviceline Explosion Protection

Inductive sensor NBB4-12GM50-E2-V1-3G-3D

  • Increased operating distance
  • 4 mm flush
  • ATEX-approval for zone 2 and zone 22

Download the complete datasheet as a PDF:

Datasheet excerpt: Technical data of NBB4-12GM50-E2-V1-3G-3D

General specifications
Switching functionNormally open (NO)
Output typePNP
Rated operating distance4 mm
Output polarityDC
Assured operating distance0 ... 3.24 mm
Reduction factor rAl 0.45
Reduction factor rCu 0.35
Reduction factor r304 0.7
Nominal ratings
Operating voltage10 ... 30 V DC
Switching frequency0 ... 1000 Hz
Hysteresistyp. 5 %
Reverse polarity protectionreverse polarity protected
Short-circuit protectionpulsing
Voltage drop≤ 3 V
Operating current0 ... 150 mA
Off-state current0 ... 0.5 mA typ. 0.1 µA at 25 °C
Off-state current TU =40 °C, switching element off
No-load supply current≤ 15 mA
Switching state indicatorMultihole-LED, yellow
Functional safety related parameters
MTTFd1820 a
Mission Time (TM)20 a
Diagnostic Coverage (DC)0 %
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)
Mechanical specifications
Connection typeConnector M12 x 1 , 4-pin
Cable versionPBT
Housing materialbrass, nickel-plated
Sensing facePBT
Housing diameter12 mm
Degree of protectionIP67
Equipment protection level Gc (nA)
Certificate of CompliancePF 15CERT3754 X
Special conditions
Protection against transientsEnsure transient protection is provided and that the maximum value of the transient protection (140% of 85 V) is not exceeded.
Equipment protection level Dc (tc)
InstructionManual electrical apparatus for hazardous areas
Device category 3Dfor use in hazardous areas with combustible dust
Certificate of CompliancePF 15CERT3774 X
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 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.
Installation, commissioningLaws and/or regulations and standards governing the use or intended usage goal must be observed. If the Ex-relevant identification is printed exclusively on the adhesive label provided, this label must be affixed in the immediate vicinity of the sensor! The background surface to which the adhesivelabel is to be applied must be clean and free from grease! The applied label must be durable and remain legible, with due consideration of the possibility of chemical corrosion!
MaintenanceNo changes can be made to apparatus, which are operated in hazardous areas.
Repairs to these apparatus are not possible.
Special conditions
Maximum operating current ILThe maximum permissible load current must be restricted to the values given in the following list.
High load currents and load short-circuits are not permitted.
Maximum operating voltage UBmaxThe maximum permissible operating voltage UBmax must be restricted to the values given in the following list. Tolerances are not permitted.
Maximum permissible ambient temperature TUmaxdependant of the load current IL and the max. operating voltage UBmax
Information can be taken from the following list.
at UBmax=30 V, IL=150 mA47 °C (116.6 °F)
at UBmax=30 V, IL=100 mA51 °C (123.8 °F)
at UBmax=30 V, IL=50 mA53 °C (127.4 °F)
Protection from mechanical dangerThe sensor must not be exposed to ANY FORM of mechanical danger.
Protection from UV lightThe sensor and the connection cable must be protected from damaging UV-radiation. This can be achieved when the sensor is used in internal areas.
Electrostatic chargeElectrostatic charges must be avoided on the mechanical housing components. Dangerous electrostatic charges on the mechanical housing components can be avoided by incorporating these in the equipotential bonding. Do not attach the nameplate provided in areas where electrostatic charge can build up.
Plug connectorThe plug connector must not be withdrawn under voltage. The proximity switch is identified as follows: "WARNING - DO NOT SEPARATE WHEN ENERGIZED". With the plug connector disconnected, soiling of the internal area must be prevented.(i.e. the area that is inaccessible when the connector is inserted)
General information
Use in the hazardous areasee instruction manuals
Category3G; 3D

Documents: NBB4-12GM50-E2-V1-3G-3D

Instruction manualsLanguageFile TypeFile Size
Instruction manualENGPDF61 KB
Manuel d'instructionsFRAPDF63 KB
BetriebsanleitungGERPDF62 KB
Manuale di istruzioniITAPDF59 KB
Manual de instruccionesSPAPDF62 KB
Technical information
Installation conditionsENGPDF191 KB
EinbaubedingungenGERPDF194 KB
warunki montażuPOLPDF245 KB
Условия монтажаRUSPDF274 KB

Approvals+Certificates: NBB4-12GM50-E2-V1-3G-3D

Statements of complianceCertificate No.File TypeFile Size
EU-Declaration of conformity / EU-KonformitätserklärungDOC-1367APDF52 KB
Canada USA CSA Ordinary Location1007121PDF99 KB
Europe Pepperl+Fuchs ATEX Category 3 D CertificatePF15CERT3774XPDF1001 KB
Europe Pepperl+Fuchs ATEX Category 3 G CertificatePF15CERT3754XPDF1015 KB
US CA UL General PurposeE87056LINK---

Associated Products: NBB4-12GM50-E2-V1-3G-3D


Mounting flange, 12 mmfa

Quick mounting bracket with dead stopfa