The Pepperl+Fuchs NBB20-U1-E0 is a high-precision inductive proximity sensor engineered for reliable non-contact detection of metal objects in industrial automation. With a 20 mm rated operating distance (flush mounting), it ensures accurate positioning even in compact or vibration-prone setups, supported by a bidirectional, rotatable sensor head for flexible alignment. The 3-wire DC NPN output (normally open) operates across a wide voltage range (10–30 V DC), integrating seamlessly with PLCs and control systems. Key electrical features include a 440 Hz switching frequency, 5% hysteresis to minimize signal fluctuations, and robust protections against reverse polarity and pulsing short circuits. A 360° visible LED system—green for power and yellow for switching state—enables quick diagnostics, making it ideal for high-speed applications like conveyor control, machinery positioning, and part counting.
Built to endure demanding industrial conditions, the NBB20-U1-E0 features a durable PA/metal housing with an epoxy powder coating, resisting corrosion, impact, and chemical exposure. Its IP68/IP69K protection rating ensures full waterproof and dustproof performance, capable of withstanding high-pressure jet cleaning and prolonged submersion. The sensor maintains stable operation across a -25°C to +85°C ambient temperature range and stores safely at -40°C to +85°C, adapting to extreme heat or cold environments. Mechanical design highlights include screw terminal connections (supporting up to 2.5 mm² conductors with 1.2 Nm torque) and a compact 40 x 40 x 118 mm form factor, weighing 225 g for easy installation in space-constrained machinery.
Designed for global industrial use, the NBB20-U1-E0 complies with EN IEC 60947-5-2 safety standards and carries certifications like UL listing and RoHS compliance, with CCC exemption for ≤36 V DC applications. Its metal reduction factors (aluminum: 0.33, copper: 0.31, stainless steel 304: 0.74) enable adaptable detection across different materials, enhancing versatility in automotive manufacturing, logistics, and process control. Functional safety parameters include an MTTFd of 1510 years and a 20-year mission time, ensuring long-term reliability in non-safety-integrated systems. Backed by 3D CAD models and EPLAN data, this sensor simplifies integration into complex automation setups, delivering precision, durability, and ease of use for critical industrial tasks.
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Attribute
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Details
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General Information
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Product Type
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Inductive Proximity Sensor
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Model
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NBB20-U1-E0
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Manufacturer
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Pepperl+Fuchs
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Sensing Characteristics
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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 (guaranteed reliable detection range)7
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Metal Reduction Factors
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Aluminum (0.33), Copper (0.31), Stainless Steel 304 (0.74), Brass (0.41)7
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Electrical Parameters
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Supply Voltage
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10–30 V DC
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Output Type
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3-wire DC NPN (normally open)7
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Nominal Operating Current
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0–200 mA7
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Off-State Current
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≤ 0.5 mA7
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No-Load Supply Current
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≤ 20 mA7
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Voltage Drop
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≤ 2 V7
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Switching Frequency
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0–440 Hz (high-speed operation)7
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Hysteresis
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Approximately 5% (minimizes signal fluctuations)7
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Electrical Protection
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Reverse polarity protection; pulsing short-circuit protection; overload protection7
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Mechanical Design
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Housing Material
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PA (polyamide) with epoxy powder coating (corrosion and impact resistance)7
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Sensing Face Material
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PA7
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Dimensions
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118 mm (length) × 40 mm (width) × 40 mm (height)7
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Weight
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225 g7
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Mounting
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Flush-mountable with bidirectional/rotatable sensor head7
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Connection
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Screw terminals (supporting up to 2.5 mm² conductors with 1.2 Nm torque)7
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Indicators
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LEDs
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Four 360° visible LEDs: Green (power status), Yellow (switching state)7
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Environmental Ratings
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IP Rating
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IP68/IP69K (resistant to high-pressure jet cleaning and dust ingress)7
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Operating Temperature Range
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-25°C to +85°C (ambient); -40°C to +85°C (storage)7
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Certifications & Approvals
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Standards
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EN IEC 60947-5-2 (industrial switchgear), RoHS compliant7
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Approvals
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cULus listed, CSA approved, CCC exempt (≤36 V DC)7
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Functional Safety
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MTTFd (Mean Time To Failure)
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1,510 years (estimated reliability for non-safety-integrated applications)7
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Mission Time (Tm)
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20 years7
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Diagnostic Coverage (DC)
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0%7
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Applications
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Industrial automation, conveyor systems, robotics, automotive manufacturing, and harsh environments requiring high-pressure washdown resistance (e.g., food processing, metalworking, logistics)
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Product Tags:
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Pepperl+Fuchs NBB20-U1-E0 Inductive Proximity Sensor | 20mm Range, 10-30V DC, IP67, M30 Housing | Factory Automation Images
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