The Pepperl+Fuchs NBB20-U1-E2-T-V1 is a robust inductive proximity sensor engineered for accurate non-contact detection of metal objects in industrial automation. With 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 3-wire DC PNP output (normally open) operates seamlessly across a 10–30 V DC range, integrating smoothly with control systems. Four 360° visible LEDs—green for power and yellow for switching state—allow easy real-time diagnostics, while a 440 Hz switching frequency and 5% hysteresis minimize signal fluctuations, ensuring stable performance in high-speed applications like conveyor control, robotic arm positioning, and part counting. Electrical protections against reverse polarity and pulsing short circuits enhance durability in dynamic industrial environments.
Built to withstand extreme conditions, the NBB20-U1-E2-T-V1 features a durable PA/metal housing with an epoxy powder coating, offering superior resistance to corrosion, impact, and vibration. Its IP68/IP69K protection rating ensures complete 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 maintains reliable operation across a -25°C to +85°C ambient temperature range (storage: -40°C to +85°C), adapting to both freezing warehouses and high-heat production areas. Mechanical specifications 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 (225 g), simplifying installation in space-constrained or vibration-prone machinery.
Designed for seamless integration into global industrial systems, the NBB20-U1-E2-T-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 metal types, 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. Backed by 3D CAD models and EPLAN data, this sensor combines precision, ruggedness, and ease of use, making it a trusted choice for demanding automation tasks requiring consistent performance and environmental resilience.
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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-E2-T-V1
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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)
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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)
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Switching Function
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Normally Open (NO)
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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 PNP (sourcing)
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Nominal Operating Current
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0–200 mA
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Off-State Current
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≤ 0.5 mA (typ. 0.01 mA)
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No-Load Supply Current
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≤ 20 mA
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Voltage Drop
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≤ 2 V
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Switching Frequency
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0–440 Hz (high-speed operation)
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Hysteresis
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Approximately 5% (signal stability enhancement)
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Electrical Protection
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Reverse polarity protection; pulsing short-circuit protection; overload protection
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Indicators
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LEDs
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4 x 360° visible LEDs: Green (power status), Yellow (switching state)
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Mechanical Design
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Housing Material
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PA (polyamide) with metal base and epoxy powder coating (corrosion/impact resistance)
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Sensing Face Material
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PA
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Dimensions
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118 mm (L) × 40 mm (W) × 40 mm (H)
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Weight
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225 g
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Mounting
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Flush-mountable with bidirectional/rotatable sensor head
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Connection
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Screw terminals (supports 0.5–2.5 mm² conductors, 1.2 Nm tightening torque)
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Environmental Ratings
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IP Rating
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IP68/IP69K (dustproof, waterproof, and resistant to high-pressure jet cleaning)
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Operating Temperature Range
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-25°C to +85°C (ambient); -40°C to +85°C (storage)
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Certifications & Approvals
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Standards
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EN IEC 60947-5-2 (industrial switchgear safety), RoHS compliant
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Approvals
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cULus listed (USA/Canada), CCC exempt (≤36 V DC), CE marking
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Functional Safety
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MTTFd (Mean Time To Failure)
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1,289 years (estimated reliability for non-safety-integrated systems)
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Mission Time (Tm)
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20 years
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Diagnostic Coverage (DC)
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0%
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Applications
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Industrial automation, conveyor systems, robotic positioning, automotive manufacturing, food processing (washdown environments), and logistics
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Pepperl+Fuchs NBB20-U1-E2-T-V1 Inductive Sensor | 20mm, 10-30V DC, IP69K, M30, PNP NO | High-Temp Washdown Images
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