The Pepperl+Fuchs NBB20-U1-Z2 is a Varikont block-type flush-mount inductive proximity sensor designed for non-contact metal object detection in automated industrial control systems. It accurately identifies ferrous and non-ferrous metal targets up to 20mm without mechanical contact, replacing traditional mechanical limit switches. Equipped with 2-wire DC circuit design, IP68/IP69K heavy-duty waterproof & dustproof housing and wide temperature adaptability, it delivers stable position detection, counting, stroke limit and material presence signal feedback for PLC, inverter and automation control cabinets. Widely deployed on conveyor lines, machine tools, robotics and process equipment to guarantee continuous, interference-free signal transmission under harsh workshop conditions.
| Item | Technical Specification |
|---|---|
| Brand | Pepperl+Fuchs |
| Model | NBB20-U1-Z2 (Part No.203044) |
| Sensor Type | Block Inductive Proximity Sensor |
| Sensing Distance | Sn=20mm (Flush Mount); Sa=0~16.2mm Assured Distance |
| Output Circuit | 2-Wire DC, NO/NC Switching Function |
| Supply Voltage | 5 ~ 60 V DC |
| Operating Current | 2 ~ 200 mA |
| Max Switching Frequency | 250 Hz |
| Voltage Drop | ≤5V @100mA Load |
| Off-State Residual Current | ≤0.5 mA |
| Indicator Light | 2 Yellow 360° Visible LED |
| Protection Class | IP68, IP69K |
| Housing Material | Polyamide PA + Epoxy Powder Coated Metal Base |
| Sensing Face Material | PA Plastic |
| Ambient Temp Range | -25 ℃ ~ +85 ℃ |
| Connection Mode | Screw Terminal, Max Wire Cross-section 2.5mm² |
| Overall Dimension | 40mm(W) * 40mm(D) * 118mm(L) |
| Single Net Weight | 225 g / pcs |
| Mechanical Tightening Torque | Terminal:1.0Nm; Housing:1.8Nm |
| Certifications | UL/cULus, CCC, CSA, IEC 60947-5-2 |
| MTTFd Service Life | 1162 Years, Design Mission Time 20 Years |