The Pepperl+Fuchs NBN40-U4-E2 is a high-performance inductive proximity sensor engineered for reliable non-contact detection of metallic objects in demanding industrial environments. Housed in a rugged M30 threaded barrel with a 50 mm sensing face, its cylindrical design allows flush or non-flush mounting, adapting seamlessly to dense machinery layouts. The rotatable sensing head (360° adjustment) optimizes detection angles in confined spaces, while the 3-wire DC PNP output (NO/NC complementary) ensures compatibility with standard control systems. A visible yellow LED indicates switching status, enhancing real-time monitoring. Weighing 200 g with included mounting nuts, it offers quick installation, ideal for applications requiring precision and durability, such as conveyor systems or robotic arm positioning.
Designed for consistent operation, this sensor provides a 40 mm rated sensing distance (flush mounting) with 5% hysteresis to minimize signal fluctuations from vibration or material variance. It operates across a 10–30 V DC voltage range, supporting a 200 mA load current with pulsing short-circuit and reverse polarity protection. The inductive technology detects ferrous and non-ferrous metals, guided by reduction factors (e.g., aluminum: 0.3, stainless steel: 0.7) for target material selection. A switching frequency of 200 Hz suits high-speed automation, while the IP67 rating protects against dust and water immersion, ensuring performance in wet or dusty environments. The polyamide (PA) sensing face and nickel-plated brass housing resist corrosion and mechanical stress, enhancing longevity.
The NBN40-U4-E2 meets international standards (EN/IEC 60947-5-2) and carries CE, UL, and CCC certifications, ensuring global usability in industrial automation. Its wide operating temperature range (-25°C to 70°C) makes it suitable for extreme conditions, from cold storage to high-temperature processing lines. The sensor’s flush-mount design reduces interference from adjacent metal surfaces, critical for dense machine setups in manufacturing, logistics, or process control. With an MTTFd exceeding 1500 years and a 20-year mission time, it delivers long-term reliability in critical applications, such as detecting pallets on conveyors or monitoring heavy machinery movements. Trusted for its robust construction and precise sensing, it embodies Pepperl+Fuchs’ expertise in industrial sensing solutions.
| Attribute |
Specification |
| General Information |
|
| Product Type |
Inductive Proximity Sensor |
| Manufacturer |
Pepperl + Fuchs |
| Model Number |
NBN40-U4-E2 |
| Sensing Characteristics |
|
| Sensing Principle |
Inductive |
| Sensing Range |
40 mm (non-flush mounting) |
| Repeatability |
±1 mm (typical) |
| Hysteresis |
5% of rated distance |
| Target Material Factor |
Aluminum: 0.34, Copper: 0.3, Stainless Steel (304): 0.81, Mild Steel: 1.0 |
| Electrical Data |
|
| Supply Voltage |
10–30 V DC |
| Output Type |
PNP (NO/NC complementary) |
| Load Current |
≤200 mA |
| Voltage Drop |
≤2 V at rated current |
| Reverse Polarity Protection |
Yes |
| Short-Circuit Protection |
Pulsing |
| Mechanical Data |
|
| Housing Material |
Nickel-plated brass with PA sensing face |
| Connection Type |
3-wire screw terminals |
| Dimensions |
M30 x 50 mm (threaded barrel) |
| Mounting |
Non-flush, rotatable head (360° adjustment) |
| Weight |
200 g (including mounting nuts) |
| Environmental Data |
|
| Ambient Temperature Range |
-25°C to +70°C |
| Storage Temperature Range |
-40°C to +85°C |
| Humidity |
35–95% RH (non-condensing) |
| Protection Class |
IP67 |
| Certifications |
|
| CE |
Yes |
| UL |
Yes |
| CCC |
Yes (China Compulsory Certification) |
| Additional Features |
|
| LED Indicators |
Yellow (switching status), green (power) |
| MTTFd |
>1,500 years (estimated based on similar models) |
| Temperature Compensation |
Yes |
| Applications |
Conveyor systems, robotic positioning, material handling, industrial machinery |
|
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NBN40-U4-E2 Inductive Proximity Sensor | 40mm Detection | IP67 | M30 Mount | Pepperl+Fuchs OEM Images
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