Pepperl+Fuchs NJ4-12GM40-E3 Inductive Proximity Sensor

USD 76.32

M12 cylindrical inductive proximity sensor with 4mm non-flush sensing, PNP NC output, 10-60V DC operation, and IP67 stainless steel housing.

SKU PEPPERL-FUCHS-NJ4-12GM40-E3 Category
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Pepperl+Fuchs NJ4-12GM40-E3 Inductive Proximity Sensor

Model Identifier NJ4-12GM40-E3
Official Part Number NJ4-12GM40-E3
GTIN Standard NA

Technical Overview

M12 cylindrical inductive proximity sensor with 4mm non-flush sensing, PNP NC output, 10-60V DC operation, and IP67 stainless steel housing.

Key Features

  • 4 mm non-flush installation for flexible mounting
  • PNP, Normally closed (NC) switching function
  • Wide operating voltage range: 10-60 V DC
  • High switching frequency: 0-2000 Hz
  • Reverse polarity and pulsing short-circuit protection
  • LED switching state indicator (yellow)
  • M12 x 1 (4-pin) connector for easy integration
  • Ambient temperature range: -25 to 70 °C (-13 to 158 °F)

Robust M12 stainless steel housing with IP67 protection ensures reliable operation in harsh industrial environments.

Technical Specification Matrix

ParameterValue
Switching functionNormally closed (NC)
Output typePNP, 3-wire
Rated operating distance (sn)4 mm
Installationnon-flush
Output polarityDC
Operating voltage (UB)10 ... 60 V
Switching frequency (f)0 ... 2000 Hz
Hysteresis (H)1 ... 10 % typ. 3 %
Reverse polarity protectionreverse polarity protected
Short-circuit protectionpulsing
Voltage drop (Ud)≤ 3 V
Operating current (IL)0 ... 200 mA
No-load supply current (I0)≤ 9 mA
Time delay before availability (tv)≤ 20 ms
Switching state indicatorLED, yellow
Ambient temperature-25 ... 70 °C (-13 ... 158 °F)
Storage temperature-40 ... 85 °C (-40 ... 185 °F)
Housing materialStainless steel 1.4305 / AISI 303
Sensing face materialPBT
Degree of protectionIP67
Connection typeM12 x 1 (4-pin) connector
Physical Weight (kg)0
Dimensions L x W x H (cm)5 x 1.2 x 1.2

Industrial Applications

1. Position Sensing in Conveyor Systems

This sensor can accurately detect the presence or absence of metallic objects (e.g., product carriers, components) on conveyor belts. Its non-flush installation allows for flexible mounting, and the 4mm sensing distance is suitable for typical object detection in automated production lines.

Problem Solved

Ensures accurate part positioning and flow control in automated conveyor lines, preventing jams and ensuring proper indexing for subsequent processing steps.

Proximity detectionConveyor controlMaterial handlingNon-flush mountingPNP outputObject detection

2. Machine Tool Position Feedback in Oily Environments

The IP67 rating and stainless steel housing make this sensor ideal for use in machine tools where it may be exposed to cutting fluids, coolants, or metal chips. Its 4mm sensing distance provides precise end-of-travel or home position feedback for moving machine parts.

Problem Solved

Provides reliable position feedback for critical machine tool movements, even in environments with oil, coolant, and debris, where less robust sensors would fail due to contamination or mechanical damage.

Machine automationEnd-of-travel detectionHarsh environmentsIP67Stainless steelPosition feedback

3. Door/Gate Position Monitoring in Industrial Facilities

The sensor can reliably monitor the open/closed status of metallic doors or gates in industrial settings, leveraging its 4mm non-flush sensing capability. The 10-60V DC operating voltage is compatible with common industrial control systems, and the robust construction ensures longevity in demanding conditions.

Problem Solved

Provides a dependable signal for the exact state of industrial doors or safety gates, contributing to safety interlocks and access control systems, especially in areas where dust or splashes might be present.

Safety interlockAccess controlDoor positionIndustrial gatesIP67M12 connection
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