The Pepperl+Fuchs NBB20-U1-A2-F-V1 is a high-performance inductive proximity sensor engineered for reliable non-contact detection of metal objects in industrial automation. Featuring a 20 mm rated operating distance (flush mounting) and a bidirectional, rotatable sensor head, it enables flexible alignment and precise positioning in compact or complex setups. The 4-wire DC PNP output offers complementary switching (NO/NC configurable), operating seamlessly across a 10–30 V DC range with reverse polarity and pulsing short-circuit protection. Four 360° visible LEDs—green for power and yellow for switching state—allow intuitive real-time diagnostics. With a 440 Hz switching frequency and 5% hysteresis, it minimizes signal fluctuations, delivering stable performance for high-speed applications like conveyor systems, robotic positioning, and part counting.
Built to withstand harsh conditions, the NBB20-U1-A2-F-V1 incorporates a durable PA/metal housing with an epoxy powder coating, resisting corrosion, impact, and vibration. Its IP68/IP69K protection rating ensures full dustproof and waterproof performance, capable of enduring high-pressure jet cleaning and prolonged submersion, making it ideal for wet, dusty, or high-contamination zones. The sensor operates reliably from -25°C to +85°C (ambient) and stores safely at -40°C to +85°C, adapting to extreme temperature variations. Mechanical design highlights include screw terminal connections (supporting up to 2.5 mm² conductors) and a compact 40 x 40 x 118 mm form factor (225 g), simplifying installation in space-constrained or vibration-prone machinery.
Designed for seamless integration into industrial systems, the NBB20-U1-A2-F-V1 complies with EN IEC 60947-5-2 safety standards and carries certifications like cULus listing and RoHS compliance, with CCC exemption for ≤36 V DC applications. Metal reduction factors (aluminum: 0.33, copper: 0.31, stainless steel 304: 0.74) allow adaptable detection across various materials, enhancing versatility in automotive manufacturing, logistics, and process control. Functional safety parameters include an MTTFd of 1289 years and a 20-year mission time, ensuring long-term reliability in non-safety-integrated setups. Supported by 3D CAD models and EPLAN data, this sensor combines precision, durability, and ease of use, making it a trusted choice for demanding industrial automation workflows.
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Attribute
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Specification
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Product Type
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Inductive Proximity Sensor
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Detection Principle
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Non-contact metal detection via inductive sensing
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Rated Operating Distance
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20 mm (flush mounting)
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Assured Operating Distance
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0–16.2 mm
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Output Type
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4-wire DC PNP (complementary switching, NO/NC configurable)
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Voltage Range
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10–30 V DC
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Switching Frequency
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0–440 Hz
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Hysteresis
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Typ. 5%
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Reverse Polarity Protection
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Yes
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Short-Circuit Protection
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Pulsing
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Voltage Drop
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≤2 V
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Operating Current
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0–200 mA
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LED Indicators
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4 x 360° visible LEDs (green: power; yellow: switching state)
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Connection Type
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Screw terminals (supports 0.5–2.5 mm² conductors, 1.2 Nm tightening torque)
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Housing Material
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PA/metal with epoxy powder coating
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Sensing Face Material
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Polyamide (PA)
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Degree of Protection
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IP68/IP69K (dustproof, waterproof, and resistant to high-pressure jet cleaning)
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Ambient Temperature
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-25°C to +85°C (-13°F to +185°F)
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Storage Temperature
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-40°C to +85°C (-40°F to +185°F)
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Dimensions
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40 mm (W) x 40 mm (H) x 118 mm (L)
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Weight
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225 g
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Metal Reduction Factors
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Aluminum: 0.33
Copper: 0.31
Stainless Steel 304: 0.74
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Functional Safety
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MTTFd: 1289 years
Mission Time (T<sub>M</sub>): 20 years
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Standards & Approvals
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EN IEC 60947-5-2
cULus listed
RoHS compliant
CCC exempt (<=36 V DC)
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Typical Applications
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Conveyor systems, robotic arm positioning, part counting, automotive manufacturing
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Product Tags:
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Pepperl+Fuchs NBB20-U1-A2-F-V1 Inductive Sensor | 20mm Range, 10-30V DC, IP69K, M30, PNP NO | Food Grade Washdown Images
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