The Pepperl+Fuchs NBB20-U1-A2 is a high-performance inductive proximity sensor engineered for accurate non-contact metal detection. Featuring a bidirectional and rotatable sensor head, it offers flexible alignment in complex setups, while four 360° visible LEDs provide clear status feedback for easy diagnostics. With a rated operating distance of 20 mm (flush mounting) and a 4-wire DC PNP output, it ensures reliable switching in industrial control systems. The sensor supports a wide operating voltage range (10–30 V DC) and includes reverse polarity and short-circuit protection, minimizing downtime from electrical faults. Its 5% hysteresis and 440 Hz switching frequency enable stable, high-speed detection, making it ideal for precision applications in machinery, robotics, and conveyor systems.
Built to withstand extreme conditions, the NBB20-U1-A2 features a durable housing made of PA/metal with an epoxy powder coating, ensuring resistance to corrosion, impact, and vibration. Its IP68/IP69K protection rating allows operation in wet, dusty, or 高压清洗 environments, while the wide temperature range (-25°C to +85°C) suits both cold storage and high-temperature industrial zones. The sensor’s screw terminal connections accommodate up to 2.5 mm² conductors, enabling secure installations, and its 225 g lightweight design simplifies integration into compact machinery. Compliance with EN IEC 60947-5-2 and UL listing guarantees safety and reliability in global industrial settings.
Designed for seamless system integration, this inductive sensor offers complementary switching functions and reduced detection distances for various metals (e.g., Al: 0.33, Cu: 0.31), enhancing adaptability across applications. The 4-wire configuration supports straightforward wiring to PLCs and control units, while its 200 mA operating current and low off-state current (0.5 mA) optimize energy efficiency. The sensor’s modular design, including optional 3D CAD models and EPLAN data, streamlines installation and maintenance. Ideal for mobile machinery, automotive manufacturing, and process automation, the NBB20-U1-A2 delivers consistent performance, combining precision, durability, and ease of use to elevate industrial automation reliability.
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Attribute
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Details
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Product Type
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Inductive Proximity Sensor
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Model
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NBB20-U1-A2
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Detection Range
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- Rated: 20 mm (flush mounting)
- Assured: 0–16.2 mm
- Metal Reduction Factors: Aluminum (0.33), Copper (0.31), 304 Stainless Steel (0.74), Brass (0.38)
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Output Type
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PNP (sourcing), 4-wire DC, complementary switching (NO + NC)
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Voltage Range
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10–30 V DC (wide compatibility for industrial control systems)
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Current Ratings
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- Operating: 0–200 mA
- Off-state: ≤0.5 mA
- No-load supply: ≤20 mA
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Switching Frequency
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440 Hz (suitable for high-speed automation tasks)
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Hysteresis
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5% (typical, ensures stable switching behavior)
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Electrical Protection
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Reverse polarity protection; pulsing short-circuit protection
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Indicators
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- 4x LEDs for 360° visibility: Green (power status), Yellow (switching state)
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Mechanical Design
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- Housing: PA/metal with epoxy powder coating
- Sensing Face: PA
- Dimensions: 40 mm (W) × 40 mm (H) × 118 mm (L)
- Weight: 225 g
- Mounting: Flush mounting with screw terminals (M20 cable gland compatible)
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Connection
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Screw terminals (max. 2.5 mm² conductor cross-section; tightening torque: 1.2 Nm ±10%)
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Environmental Ratings
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- IP Rating: IP68/IP69K (waterproof, dustproof, and resistant to high-pressure cleaning)
- Temperature: -25°C to +85°C (ambient); -40°C to +85°C (storage)
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Certifications
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- Standards: EN IEC 60947-5-2
- Approvals: UL listed (general purpose); CCC exempt (≤36 V DC)
- Compliance: RoHS compliant
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Functional Safety
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- MTTF d: 1289 years
- Mission Time (T m): 20 years
- Diagnostic Coverage (DC): 0%
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Installation
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Flush-mountable in metal surfaces; bidirectional/rotatable sensor head for flexible alignment
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Applications
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Machinery control, conveyor systems, automotive manufacturing, process automation, and harsh industrial environments (e.g., wet/dusty zones, high-pressure 清洗 areas)
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Additional Features
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- Low voltage drop (≤2 V)
- Quick startup time (80 ms)
- Modular design with 3D CAD models and EPLAN data available for seamless integration
- Lightweight and compact for space-constrained setups
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Product Tags:
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Pepperl+Fuchs NBB20-U1-A2 Inductive Sensor 20mm Detection 10-30V DC M30 IP67 Images
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