Model: NBN40-U1-UU (PEPPREL + FUSCH Sensor)

The Pepperl+Fuchs NBN40-U1-UU is a non-flush inductive proximity sensor from the Varikont/Comfort series designed for reliable metal object detection in industrial automation applications. It features a 40 mm sensing range, 2-wire AC/DC operation, selectable NO/NC output, a rotatable sensing head, LED status indication, and robust IP67 protection, making it suitable for harsh industrial environments.

Key Features

  • 40 mm long sensing distance
  • Non-flush installation
  • 2-wire AC/DC universal operation
  • Selectable NO/NC switching output
  • Rotatable and bidirectional sensor head
  • Green, yellow, and fault indication LEDs
  • IP67 environmental protection
  • Reverse polarity and short-circuit protection
  • Wide voltage range up to 275 VDC / 253 VAC
  • Rugged industrial PA66/metal housing

Dimensions:

Application: Conveyor systems, machine automation, material handling, packaging equipment, position detection, and heavy industrial sensing where a large sensing distance is required.

Specifications

Manufacturer Pepperl+Fuchs
Model NBN40-U1-UU
Part Number 238886
Sensor Type Inductive Proximity Sensor
Series Comfort / Varikont
Mounting Style Non-flush (Unshielded)
Switching Function Selectable NO/NC (Normally Open / Normally Closed)
Output Type 2-wire
Output Polarity AC/DC
Rated Operating Distance (Sn) 40 mm
Assured Operating Distance (Sa) 0 ... 32.4 mm
Actual Operating Distance (Sr) 36 ... 44 mm (typ. 40 mm)
Reduction Factor (Steel Fe) 1.0
Reduction Factor (Stainless Steel 304) 0.73
Reduction Factor (Aluminum) 0.37
Reduction Factor (Brass) 0.40
Reduction Factor (Copper) 0.30
Operating Voltage (UB) 20 ... 275 V DC / 20 ... 253 V AC
Rated Operating Voltage (UE) 24 ... 250 V DC / 24 ... 230 V AC
Operating Current (IL) 5 ... 500 mA
Rated Operating Current (IE) 500 mA
Minimum Operating Current (IM) 5 mA
Off-State Current (IR) ≤ 1.5 mA
Switching Frequency (DC) 0 ... 100 Hz
Switching Frequency (AC) 0 ... 30 Hz
Hysteresis 1 ... 10% (Typical 5%)
Voltage Drop (DC) ≤ 5 V (Typical 2 V)
Voltage Drop (AC) ≤ 8 V (Typical 3 V)
Momentary Current (20 ms) 0 ... 3000 mA
Reverse Polarity Protection Reverse polarity tolerant
Short-Circuit Protection Pulsing
Time Delay Before Availability ≤ 300 ms
Operating Voltage Indicator Green LED
Switching State Indicator Yellow LED
Error Indicator Flashing LED on overcurrent
Protection Class Class II
Rated Insulation Voltage (Ui) 250 V
Impulse Withstand Voltage (Uimp) 2.5 kV
Degree of Protection IP67
Ambient Temperature −25 °C to +85 °C
Storage Temperature −25 °C to +85 °C
Pollution Degree 3
Connection Type Terminal compartment
Maximum Conductor Size 2.5 mm²
Minimum Conductor Size 0.5 mm² without ferrules, 0.34 mm² with ferrules
Housing Material PA 6.6 / Metal
Sensing Face Material PA 6.6
Housing Base Material Plastic
Width 40 mm
Height 40 mm
Length 118 mm
Weight 255 g
Compliance Standard EN IEC 60947-5-2
UL Approval cULus Listed
CCC Approval Yes
MTTFd 540 years
Mission Time (TM) 20 years
Diagnostic Coverage (DC) 0%
Dimension Value
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