Versatile Design for Flexible Industrial Sensing

The Pepperl+Fuchs NBB20-L2-A2-C-V1 is a robust inductive sensor engineered for precise non-contact detection of metallic objects in industrial automation systems. Featuring a bidirectional and rotatable sensor head, it allows flexible alignment to optimize detection angles in confined spaces. The 4-wire DC configuration ensures stable power and signal transmission, while its flush-mount design (20 mm sensing face) minimizes interference from adjacent metal surfaces, making it ideal for dense machinery setups. Four 360° visibility LEDs provide clear status feedback—green for power and yellow for switching state—enhancing operational monitoring. Weighing just 155 g with a compact 40 x 40 x 67 mm form factor, it integrates seamlessly into tight layouts, supported by a quick-mount bracket for hassle-free installation.

Reliable Performance with Robust Technical Specifications

Designed for consistent operation, this sensor offers a rated operating distance of 20 mm, with an actual range of 18–22 mm and assured safety margin (0–16.2 mm) to prevent false triggers. Its PNP output type and complementary switching function deliver reliable digital signals across a wide 10–30 V DC voltage range, capable of handling up to 200 mA load current with pulsing short-circuit and reverse polarity protection. The IP68/IP69K rating ensures resistance to high-pressure water jets and dust, while the PA housing and sensing face withstand harsh environments with temperatures ranging from -25°C to 85°C. A switching frequency of 440 Hz enables rapid response in high-speed applications, supported by 5% hysteresis for stable signal transitions.

Compliance and Durability for Demanding Industrial Environments

The NBB20-L2-A2-C-V1 meets international standards (EN/IEC 60947-5-2) and carries certifications like UL, CE, and CCC exemption (≤36 V), ensuring compatibility with global automation setups. Its M12 x 1 connector simplifies wiring, while mechanical specs—including a 4-pin interface and 3.3 mm cable diameter—align with industry norms for easy integration. Key safety parameters like an MTTFd of 1289 years and mission time of 20 years reflect its long-term reliability, making it suitable for critical machinery in manufacturing, logistics, and process control. Whether detecting metal parts on conveyor belts or monitoring robotic arms, this sensor balances precision, durability, and ease of use, embodying Pepperl+Fuchs’ legacy in industrial sensing solutions.