RFQ

Pepperl+Fuchs Inductive sensor NBB20-U1-E2

  • NG # 04166-HW-PEP-048

  • MF # NBB20-U1-E2

Industrial inductive proximity sensor designed for reliable object detection in automation systems. The NBB20‑U1‑E2 features a flush mounting capability, robust housing with high protection rating, and 3‑wire PNP output for direct DC control system integration. Available with standardized connection options and LED indication for status feedback.

Manufactured By :
Pepperl+Fuchs
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Overview

The NBB20‑U1‑E2 is a 20 mm flush inductive proximity sensor suitable for industrial automation and sensing applications. It detects metallic targets within a 20 mm range and outputs a PNP signal compatible with typical DC control circuits. The sensor includes protective features such as reverse polarity protection, short‑circuit protection, and high ingress protection to withstand harsh environments. Robust construction and indicator LEDs help ensure reliable operation and easy status monitoring.

Specification

General Characteristics

  • Sensing function: inductive proximity detection for metallic objects 
  • Rated operating distance: 20 mm 
  • Installation type: flush mounting 
  • Output type: PNP, 3‑wire 
  • Output polarity: DC 

Electrical Ratings

  • Operating voltage range: 10 … 30 V DC 
  • Switching frequency: up to 440 Hz 
  • Operating current: up to 200 mA 
  • Voltage drop: ≤ 2 V 
  • Reverse polarity protection: built‑in 
  • Short‑circuit protection: pulsing 

Indicators

  • Operating voltage indicator: green LED 
  • Switching state indicator: yellow LED 

Mechanical & Environmental

  • Housing: plastic/metal with epoxy powder coating 
  • Sensing face: PA plastic 
  • Degree of protection: IP68 / IP69K 
  • Ambient temperature range: –25 … 85 °C 
  • Mass: 225 g 
  • Dimensions: 40 mm × 40 mm × 118 mm 

Connection & Wiring

  • Connection type: screw terminals 
  • Terminal capability: up to 2 conductors per terminal of same cross‑section 
  • Core cross‑section range: 0.5 … 2.5 mm² (without ferrules) 

Compliance & Standards

  • Conforms to EN IEC 60947‑5‑2 standards 
  • UL approval: cULus Listed for general purpose DC switching

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